El Reno: Lessons From the Most Dangerous Tornado in Storm Observing History

NWSNorman
26 Feb 202425:47

Summary

TLDROn May 31, 2013, a massive tornado struck El Reno, Oklahoma, with unprecedented diameter and wind speeds. Its erratic movement and high precipitation made observation treacherous, leading to the tragic loss of storm chasers and observers. The event underscores tornado unpredictability, the danger of close approaches, and the risk of satellite tornadoes. It emphasizes the importance of maintaining distance, being vigilant, and prioritizing safety over documentation.

Takeaways

  • 🌪️ The El Reno tornado of May 31st, 2013 was a massive and powerful event, with a diameter of up to 2.6 miles and wind speeds nearing 300 mph, making it one of the most intense tornadoes in history.
  • ⚠️ The tornado exhibited unpredictable behavior, frequently changing speed and direction, which made safe observation extremely difficult, even for experienced storm chasers.
  • 👥 Tragically, the tornado claimed the lives of eight people, including well-known storm chasers Tim Samaras, Paul Samaras, and Carl Young.
  • 🌩️ The tornado formed under a potent combination of atmospheric conditions, including extreme instability, strong vertical wind shear, and a powerful low-pressure system.
  • 🌀 The tornado had a high precipitation character, making it difficult to see, and was accompanied by multiple satellite tornadoes and an anticyclonic tornado, increasing the danger for those nearby.
  • 🚗 Several storm chasers, including a Weather Channel crew and the Twistex team, were caught in the tornado’s path, with some surviving close encounters, while others did not.
  • 🌧️ The tornado was difficult to track visually due to rain and debris, and its unpredictable movement made it challenging for chasers to avoid.
  • 🌪️ The El Reno tornado expanded rapidly, doubling in width in just a few minutes, making it even more dangerous for those trying to escape its path.
  • 🚷 The event highlighted the dangers of storm chasing, particularly in volatile weather conditions, and emphasized the need for greater caution and distance from tornadoes.
  • 🔄 The El Reno tornado serves as a sobering reminder of the unpredictable nature of tornadoes and the importance of respecting their power and potential for rapid, life-threatening changes.

Q & A

  • What made the El Reno tornado on May 31st, 2013 particularly dangerous?

    -The El Reno tornado was exceptionally large, reaching up to 2.6 miles in diameter, and had unpredictable speed and directional changes. Its winds reached nearly 300 mph, making it one of the most powerful tornadoes in history. Additionally, its high precipitation and looping movement made it difficult for storm chasers to observe safely.

  • What were some challenges storm chasers faced during the El Reno tornado?

    -Storm chasers faced challenges such as the tornado’s unpredictable changes in direction and speed, limited visibility due to the high precipitation in the storm, and sudden expansion of the tornado’s windfield, which made close observation dangerous and often forced them to flee.

  • How did the El Reno tornado cause the deaths of notable storm chasers?

    -The tornado’s rapid expansion and unpredictable movements contributed to the deaths of renowned storm chasers Tim Samaras, Paul Samaras, and Carl Young. They were overtaken by a sub-vortex within the larger tornado, which tumbled their vehicle several times, leading to their tragic deaths.

Outlines

00:00

🌪️ The Deadly El Reno Tornado of May 31, 2013

On May 31, 2013, a massive tornado formed near El Reno, Oklahoma, reaching an unprecedented 2.6 miles in diameter and producing winds near 300 mph. This tornado was notorious for its unpredictable changes in speed and direction, making it extremely dangerous for storm chasers. Among the eight fatalities were well-known storm chasers Tim Samaras, Paul Samaras, and Carl Young. This tragedy highlighted the critical need to document the lessons learned to prevent future loss of life in the storm chasing community.

05:03

⛈️ Atmospheric Conditions Leading to the El Reno Tornado

On May 31st, severe weather was predicted over Central Oklahoma due to a potent combination of atmospheric ingredients, similar to those that caused a devastating EF5 tornado in Moore, Oklahoma, just days earlier. A slow-moving upper tropospheric trough, intense low-level flow, and strong mid-tropospheric winds created extreme instability in the region. This instability was measured using weather balloon data, revealing significant convective available potential energy (CAPE). The cap, a warm dry air layer, delayed thunderstorm development until peak heating, setting the stage for explosive storm formation.

10:04

🌩️ The Formation and Rapid Expansion of the El Reno Tornado

As the atmosphere became primed for severe storms, thunderstorms began forming around 4:30 PM, about 50 miles west of Oklahoma City. A storm near El Reno quickly developed mid-level rotation, leading to the formation of a large, rapidly rotating wall cloud. By 6:00 PM, the El Reno tornado had begun, initially showing a strong multiple vortex structure. Storm chasers in the area, including the Tempest Tour Group, narrowly escaped as the tornado expanded rapidly, increasing in forward speed and width, making it far more dangerous than initially perceived.

15:08

🚨 Close Calls and Fatal Consequences During the Tornado

The El Reno tornado's rapid expansion and unpredictable movement caught many storm chasers off guard. As it grew in size and speed, it became increasingly difficult to see due to rain and debris. Several storm chasers, including Brandon Sullivan and Brett Wright, were almost overtaken by the tornado's outer edge but managed to escape. Others, like the Twistex team led by Tim Samaras, were not as fortunate. Their vehicle was struck by a powerful sub-vortex, resulting in their tragic deaths. The tornado's complex structure and erratic behavior made it a formidable and deadly force.

20:08

⚠️ Lessons from the El Reno Tornado Tragedy

The El Reno tornado taught several crucial lessons for storm chasers. Tornadoes, especially large ones, can change direction and speed unexpectedly, making them highly dangerous. The tornado's rapid expansion and hidden wind fields caught many chasers by surprise, leading to fatal consequences. The event also highlighted the dangers of satellite tornadoes and anticyclonic tornadoes, which can form near the main tornado. The tragic deaths of the Twistex team and others underscore the need for storm chasers to maintain a greater distance from tornadoes and remain vigilant about the rapidly changing conditions during severe weather events.

25:27

🌪️ The Unpredictable Nature of Tornadoes

The El Reno tornado was a reminder of the unpredictable and deadly nature of tornadoes. Large tornadoes can be accompanied by satellite and anticyclonic tornadoes, further complicating efforts to observe them safely. The event also demonstrated the limitations of radar in accurately tracking tornadoes, as the El Reno tornado moved rapidly, often faster than radar updates could track. Storm chasers are advised to place more distance between themselves and tornadoes, especially when atmospheric conditions are particularly volatile, to avoid tragic outcomes like those seen on May 31, 2013.

Mindmap

Keywords

💡El Reno Tornado

The El Reno Tornado was an exceptionally large and powerful tornado that occurred on May 31, 2013, near El Reno, Oklahoma. It is notable for its massive size, reaching up to 2.6 miles in diameter, and its unpredictability, with winds near 300 mph. The tornado exhibited unusual behavior, including sudden changes in speed and direction, making it extremely dangerous. It tragically resulted in the deaths of several well-known storm chasers.

💡Multiple Vortex Structure

A multiple vortex structure refers to the presence of several smaller, spinning vortices within a larger tornado. The El Reno Tornado displayed this feature, making it more destructive and difficult to predict. These sub-vortices can cause extreme damage in localized areas, which is why some structures within a tornado's path are completely destroyed while others nearby remain intact.

💡High Precipitation Supercell

A high precipitation (HP) supercell is a type of thunderstorm characterized by heavy rainfall and limited visibility of the tornado it produces. The El Reno Tornado was associated with an HP supercell, which made it difficult for storm chasers to see and track the tornado, increasing the danger and contributing to the fatalities among observers.

💡Convective Available Potential Energy (CAPE)

CAPE is a measure of the instability in the atmosphere, indicating the potential energy available for storm development. High CAPE values, like the 6,000 joules per kilogram mentioned in the script, suggest a strong likelihood of severe thunderstorms and tornadoes. In the case of the El Reno Tornado, extreme CAPE levels contributed to the rapid and intense development of the storm.

💡Vertical Wind Shear

Vertical wind shear refers to the change in wind speed and direction with height in the atmosphere. It is a critical factor in the development of rotating thunderstorms and tornadoes. The El Reno Tornado was influenced by strong vertical wind shear, which helped create the conditions necessary for the tornado's formation and contributed to its rotation and intensity.

💡Tornado Warning

A tornado warning is an alert issued by the National Weather Service when a tornado has been sighted or indicated by radar. During the El Reno event, a tornado warning was issued when radar detected a developing tornado near El Reno. However, due to the storm's rapid changes in behavior and limited visibility, the warning may not have provided sufficient time for people to seek safety.

💡Storm Chasers

Storm chasers are individuals who actively pursue severe weather events like tornadoes to observe, record, and study them. The script highlights the dangers faced by storm chasers during the El Reno Tornado, where several experienced chasers, including Tim Samaras, Paul Samaras, and Carl Young, tragically lost their lives. The event serves as a reminder of the risks involved in storm chasing.

💡Satellite Tornadoes

Satellite tornadoes are smaller tornadoes that orbit around a larger, primary tornado. The El Reno Tornado produced multiple satellite tornadoes, which added to the complexity and danger of the storm. These smaller tornadoes can form quickly and in unexpected locations, making them particularly hazardous for those trying to observe or escape the main tornado.

💡Anticyclonic Tornado

An anticyclonic tornado is a rare type of tornado that spins in the opposite direction (clockwise in the Northern Hemisphere) to the more common cyclonic tornadoes. The El Reno Tornado event included the development of an anticyclonic tornado southeast of the main storm. Although smaller in size, anticyclonic tornadoes can still be very powerful and dangerous.

💡Capping Inversion

A capping inversion is a layer of warm air aloft that suppresses thunderstorm development until it is broken by surface heating or other atmospheric processes. The script describes how a capping inversion initially prevented storm formation on May 31, 2013, but when it eventually broke, it led to the explosive development of the severe thunderstorms that produced the El Reno Tornado.

Highlights

An exceptionally large and powerful tornado formed near El Reno, Oklahoma on May 31, 2013, reaching a record width of 2.6 miles and producing winds near 300 mph.

The tornado exhibited unusual behavior, frequently changing both speed and direction, making it nearly impossible to predict and observe safely.

Storm chasers, including well-known figures like Tim Samaras, Paul Samaras, and Carl Young, were among the eight victims of the tornado, highlighting the severe dangers of chasing.

The tornado was shrouded in rain and exhibited multiple vortices, making it difficult for storm spotters and chasers to see and assess the danger, leading to tragic outcomes.

The storm’s rapid changes in speed and direction, along with its immense size, made close-range observation incredibly dangerous.

Radar data and visual observation confirmed that the tornado reached a maximum width of 2.6 miles, the widest ever recorded.

Despite its massive size, the tornado's outer wind field was much larger than its visible condensation funnel, which was only about a third of its total width.

The tornado's rapid expansion and acceleration caught many off guard, doubling its width and speed within minutes.

The tornado's unpredictable movement, including a 360-degree turn, highlighted the challenges of forecasting and evading such storms.

The tornado was accompanied by satellite tornadoes and an anticyclonic tornado, further complicating the situation for those in its path.

The tornado's high precipitation character made it particularly dangerous, as it was difficult to visually track and estimate its proximity.

Lessons learned from this event emphasize the importance of maintaining greater distance from tornadoes, especially under volatile weather conditions.

The event underscored that even experienced storm chasers are vulnerable to the unpredictable nature of large, powerful tornadoes.

Increased storm chasing activity has led to more close encounters, raising the risk of deadly interactions with tornado sub-vortices.

The tornado tragically demonstrated that no data, footage, or report is worth risking one’s life, reinforcing the need for safety in storm observation.

Transcripts

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on May 31st 2013 an exceptionally large

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and powerful tornado formed near eleno

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Oklahoma up to 2.6 mil in diameter This

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Tornado produced Winds near 300 mph

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ranking with some of the most intense

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tornadoes in

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history

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This Tornado exhibited an unusual pinent

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for changing both speed and direction

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forward speeds ranged from nearly

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stationary to over 50 mph while the

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direction of movement spanned over

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360° looping over Interstate 40 this

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made safe observing at close range

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almost

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impossible the high precipitation

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character of the parent thunderstorm

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made viewing very difficult for storm

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spotters and Chasers all of these

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factors combined to produce an

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incredibly dangerous situation in which

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many storm observers were forced to flee

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for their lives unfortunately not

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everyone Made It

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Out Among the eight victims this storm

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claimed were well-known stormchasers Tim

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samis Paul samis and Carl Young as well

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as at least one other storm observ

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in view of this tragedy we deem it

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important to document the lessons that

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this storm has pressed upon the chasing

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and spotting Community we hope that this

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documentation will reduce the risk of

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another such

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tragedy Friday May 31st severe weather

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has been in the forecast for days

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but where and would a tornado threat

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exist it is early morning forecasters

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are convinced that a potent combination

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of atmospheric ingredients will set up

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over Central

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Oklahoma tornadoes look likely in an

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area that has already seen more than its

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fair share of wicked

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weather on May 20th a rare EF5 tornado

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ravaged Moore Oklahoma a suburb of

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Oklahoma City

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This Tornado took the lives of over 20

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people and left hundreds

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injured similar to the 20th a large

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slow-moving upper tropospheric trough is

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positioned over the

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plains the southern periphery of this

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trough features an intense mid to uper

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tropospheric jet which has initiated

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strong southerly low-level flow very

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rich moisture is moving toward the plan

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ples in the middle troposphere strong

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Westerly winds are transporting a cool

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dry layer of air over the warm moist

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layer to the

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east the overlap of these two air masses

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is creating a zone of conditionally

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unstable air over the Southern Plains

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and the Upper

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Midwest conceptually conditional

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instability is similar to the hot air

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balloon hot air is less dense than cold

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air at the same pressure level so the

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balloon Rises this force is known as

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buoyancy gravity acts in the opposite

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direction if buoyancy is greater than

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gravity an upward force is

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created instability can be measured from

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weather balloon data these balloons rise

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through the troposphere creating a

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vertical profile of temperature humidity

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and

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winds during the early even evening a

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weather balloon is launched from Norman

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Oklahoma revealing a vertical profile of

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the troposphere the environmental

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temperature with height is in red the

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parcel temperature analogous to the hot

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air balloon is the dotted line notice

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that the parcel temperature is much

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greater than the environmental

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temperature this means that air

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originating from the ground will rise

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with great force once the environmental

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temperature is cool enough the total

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difference in the two temperature traces

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is known as the convective available

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potential energy or Cape the area

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between the two temperature traces

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determines the value of Cape all of this

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energy is contained by a warm dry layer

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of air known as the cap this layer of

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air originates in the desert Southwest

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it prevents thunderstorm development

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through most of the day generally until

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Peak heating when it breaks it breaks

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explosively similar to the effect of

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removing a lid from a Boiling Pot of

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water the combination of Rich GF

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moisture with cool dry air above has led

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to the development of extreme

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instability Cape values reach as high as

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6,000 Jew per kilogram in Southwest

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Oklahoma a surface low pressure has

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formed over Southwestern Oklahoma

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backing the flow in central Oklahoma

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from South to

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Southeast in addition to strengthening

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convergence in Southwestern Oklahoma

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that may lead to the initiation of

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thunderstorms this is also increasing

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the Turning with height in the

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troposphere leading to Stronger vertical

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wind

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shear in the middle troposphere winds

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are from the west and southwest

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generally above 40 knots over the

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Southern

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Plains combined with the backed surface

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flow this has led to the development of

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deep layer Shear more than 40 knots

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given the extreme instability conditions

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have become more than sufficient for

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rotating thunderstorms to illustrate

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we turn to the Paddle

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Wheel if water at the top of a Paddle

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Wheel is Flowing quickly and water at

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the bottom is Flowing slowly the Paddle

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Wheel will tend to

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rotate this effect also occurs in the

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atmosphere since air is a fluid here is

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an image from a developing thunderstorm

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on a day when tornadoes occurred

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nearby the winds at the top of this

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towering cumulus are much stronger than

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at the bottom this causes the developing

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storm to lean down sheer unseen by the

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eye are numerous horizontal

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circulations the formation of supercell

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thunderstorms from which tornadoes

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develop begins with these horizontal

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circulations created by differences in

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wind speed and direction with height

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when a developing thunderstorm updraft

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encounters a circulation the circulation

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is tilted upward by the updraft into the

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the shape of a

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horseshoe this creates circulations

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spinning opposite directions the

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northern circulation spins clockwise and

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the southern spins

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counterclockwise the wind pattern often

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favors strengthening of the Southern

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circulation while the northern

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circulation tends to dissipate the

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southern updraft continues to strengthen

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as an adjacent downdraft forms created

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in part by precip

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ation this precipitation is wrapped

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around the updraft creating the

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characteristic hook Echo a supercell is

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Born the stage is set for intense

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supercells a stationary boundary

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generated by previous convection is

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positioned over Interstate 40 in central

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Oklahoma it is adding fuel to the

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proverbial fire it is simultaneously

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enhancing the low-l shear while creating

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a focus Focus for convective initiation

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at its intersection with the dry

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line visible satellite imagery shows

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partly cloudy skies in central Oklahoma

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warming the air near the stationary

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boundary providing power for explosive

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updrafts it is 400 p.m. the atmosphere

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is primed for the development of intense

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thunderstorms radar shows a number of

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attempts at thunderstorm initiation west

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of Oklahoma City but as of yet nothing

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has developed

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however on the ground cumulus are seen

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towering High just west of Oklahoma City

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indicating that thunderstorms will

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initiate

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soon stormchasers are beginning to

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converge in the small town of eleno as

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the location of key boundaries strongly

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hints that it will be Ground

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Zero around 4:30 the capping inversion

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the layer of B A that often suppresses

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storm development in the plains breaks

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in a Northeast to Southwest line line

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about 50 Mi west of Oklahoma

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City several storms rapidly form

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reaching Heights well above 50,000 ft

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still considerable uncertainty remains

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concerning which storm or storms will

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dominate this storm approximately 15 Mi

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west southwest of Calumet quickly

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develops mid-level

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rotation radial velocity shows a weak

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but classic rotational signature about

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10 miles west of

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eleno at the ground storm observers note

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a rapidly rotating wall cloud just south

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of the interstate the National Weather

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Service issues a tornado warning

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unconfirmed reports of a large tornado

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are hitting the TV

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Airways just as this storm is

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approaching maturity another storm

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develops to its South merges and begins

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to rotate

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shortly after 6: p.m. a vigorous

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circulation develops rapidly 10 miles

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Southwest of elino from the ground this

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circulation is seen as another large

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rapidly rotating wall cloud within 2

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minutes of its development a ground

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circulation develops the alino tornado

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has

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begun the tornado immediately shows

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strong multiple vortex structure

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The Tempest tour Group is located

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southeast of the tornado a traditionally

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safe spot if a tornado is moving

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Northeast the tornado does not initially

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appear to deviate from the expected

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motion to the east it also doesn't

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appear very close an illusion created by

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the low hanging Cloud base sub vortices

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appear as well but instead of moving

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left to right they appear to move closer

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to the photographer the tour leader

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begins to sense danger and signals his

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tour members to come back to the vehicle

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the tornado does not appear very large

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but the entire circulation is almost a

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half mile across the tourists

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frantically make their way back to the

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vehicle as the tornado rapidly closes on

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their location the two are Center their

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vehicle and are barely able to escape

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the widening tornado can be seen from a

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rear view

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camera it is about 6:06 p.m. The Tempest

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tour group is making their escape just

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south of the tornado meanwhile Brandon

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Sullivan and Brett Wright are stopped

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along child's Road just south of Reno

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Street filming the developing tornado to

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their

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West the tornado appears to be a half

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mile away away which should leave enough

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time for a safe Escape what they don't

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realize is that the tornado has expanded

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to 3/4 of a mile wide and the forward

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speed has increased to 35 mph the edge

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of the ttic Windfield is close and

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closing realizing the danger Sullivan

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and Wright begin to pack up their gear I

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got it get in the car then get in the

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car Sullivan and Wright head south they

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realize the tornado is much closer and

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they make a frantic Escape they are

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overtaken by the outer edge of the

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tornado they survive without

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injury meanwhile Dave dmco and Heidi

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Ferrar are observing the tornado a few

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miles to the

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north dmco and Ferrar are in the notch

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the space in between the large Hail to

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the North and the tornado to the South

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the storm is high precipitation in

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character and so it is difficult to see

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the tornado especially from the north

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not knowing the exact size and movement

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of the tornado they begin to worry about

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where to go they agree to bail

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West while dimco and Ferrar are

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observing the widening Tornado from the

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north Skip talit and Jen Brindley are

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observing the approaching Tornado from

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the

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East the time is 6:13 p.m. from their

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location the tornado is difficult to see

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because of the rain talbet notices very

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fast moving rain Cur

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very close and decides it's time to bail

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East from talit and brinley's location

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the condensation funnel is faintly

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visible and occupies the area seen here

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in blue the visible funnel is

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approximately. 3 Mi wide the tornado

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width based on mobile radar data is

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about 1.6 mil in diameter noted by the

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red circle thus the area occupied by the

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full tornadic Windfield is is more than

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10 times larger than its condensation

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funnel in this modified version of

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Talbot's video you can see how large the

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tornado Windfield is compared to the

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condensation

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funnel now realizing the imminent threat

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talbet and brenley Retreat East on 15th

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Street the tornado keeping Pace at a

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blistering 45

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mph

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while they are fleeing Ray bohack and

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his crew are following the tornado on

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Reno just a few miles Northwest of

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talbat in

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Brinley they watch as the large tornado

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intensifies in front of them it is

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615 the tornado was difficult to see and

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shrouded by rain and debris suddenly two

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more tornadoes appear

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satellites these tornadoes are 1/4 to 1/

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half mile from from the edge of the main

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tornado these tornadoes spin about the

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main funnel in a counterclockwise

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orbit it is 618 a Weather Channel crew

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led by Mike Bettis is racing South down

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Highway 81 meanwhile Richard Henderson

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is trying to beat the tornado to the

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east his progress delayed by a chaser

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traffic

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jam near the intersection of 15th Street

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with Highway 81 the tornado appears as a

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wallet

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condensation Mikey Gribble shoots video

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to the West along 15th Street as The

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Weather Channel crew is frantically

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attempting to get past the tornado a

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mile to his West they do not make

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it while the weather channel is

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attempting to outrace the tornado

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Richard Henderson continues East on Reno

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hoping to beat the tornado to the east

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hindered by the blinding rain and

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powerful winds Henderson stops

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with brutal force the tornado overtakes

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him he does not

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survive the lead car of The Weather

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Channel crew is hit by a sub Vortex

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within the larger tornado and their

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vehicle is rolled almost 200 yards the

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car is badly damaged and all airbags are

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deployed amazingly all of the team's

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crew members have

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survived as The Weather Channel crew is

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getting hit Dan Robinson is heading East

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on Road just west of Highway 81 he

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briefly considers heading south but

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realizes there isn't enough time the

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tornado is moving fast much faster than

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expected Robinson decides to continue

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heading East on

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ruter unknown to Robinson at the time a

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white Chevy Cobalt is following him in

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it are Tim samaris Paul samaris and Carl

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Young though the main condensation

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funnel is still a mile away Robinson is

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overtaken by the invisible edge of the

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tornado Robinson's four-cylinder vehicle

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struggles to go Eastward against strong

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East and northeasterly winds the wind

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slows down Robinson's attempt to escape

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the approaching

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tornado less than a half mile behind

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Robinson a powerful sub Vortex is

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swinging Northwest toward Rutter in the

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direct path the twistex crew is riding

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out the storm alongside the river Ro

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near a creek The Vortex briefly stalls

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over their Chevy Cobalt it tumbles over

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five times they do not

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survive the tornado continues to head

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north the forward speed of the tornado

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slows down to less than 10 mph the

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tornado becomes increasingly wrapped in

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Rain meanwhile at 6:41 skip talot spots

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another tornado approximately 5 miles to

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the southeast of the main tornado

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This Tornado though is spinning

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clockwise or

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anticyclonically though only a couple

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yards in diameter This Tornado is

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powerful with Peak winds approaching 150

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mph finally at 6:43 p.m. the tornado

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dissipates near the intersection of I40

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and banner

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road several lessons have reemerged from

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this tragic event it is our hope that

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these will lower the probability of

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another chasing or spotting

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tragedy first tornado motion is always

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unpredictable even for big tornadoes

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they don't move in straight lines or at

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constant speed and it's often difficult

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to tell where a tornado is moving the

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eleno tornado changed directions over

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360° thus if you were close there was no

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safe spot regardless of what direction

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the tornado had been moving Additionally

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the range of speeds in the alen tornado

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was enormous from nearly stationary to

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over 55

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mph near Highway 81 the tornado doubled

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its speed from 25 to 50 mph in 5 minutes

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if you can't see the tornado as was the

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case with Dan Robinson and the twistex

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chase team north of the tornado you may

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be in Mortal danger sudden turns can and

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do

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happen tornadoes can expand rapidly from

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605 to 610 when Brandon Sullivan and

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Brett Wright stopped to shoot video

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along child's Road the width of the

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tornado doubled from 6 mil to 1.2 mil

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wide making a close approach to a

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tornado can be very dangerous and

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potentially deadly a tornado is often

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larger than its condensation funnel in

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some cases much larger skip Talbot's

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view of the tornado at 613 demonstrates

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this quite well the tornado appeared to

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be 1/3 of a mile wide but the tornadic

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Windfield was well over a mile wide in

play20:03

the case of the twist X group it is

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quite likely that they thought they had

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more time to escape the tornado than

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they actually had since the outer edges

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of the tornado were not visible however

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the easterly winds inside the

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uncondensed tnic circulation were

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powerful enough to hinder their escape

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on Rutter resulting in

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tragedy when big tornadoes occur they

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are often accompanied by other tornadoes

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these additional tornadoes present a big

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problem for those trying to observe

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storm safely the first type is the

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satellite tornado at 6:15 p.m. multiple

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satellite tornadoes were observed on the

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west and south side of the alino tornado

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these tornadoes generally occur within a

play20:42

mile of the main tornado in any

play20:44

direction close observers are

play20:46

particularly vulnerable to this type of

play20:49

tornado the second type is the

play20:51

anticyclonic tornado this type of

play20:53

tornado spins in the opposite direction

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of the main tornado while the REO

play20:58

tornado was wrapped in rain near I40 a

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powerful anticyclonic tornado with winds

play21:03

up to 150 mph developed to the southeast

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of the main tornado typically these

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tornadoes form to the right of the hook

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Eko a fair distance away from the main

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cyclonic

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tornado the final type of danger comes

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from new tornadoes forming in new

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circulations within the parent

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thunderstorm they generally form

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Downstream of the existing

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tornado the notch of a high

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precipitation super cell is extremely

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dangerous it is why core punching

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approaching the Tornado from the rain

play21:33

and hail Is So

play21:35

perilous this is the area of the storm

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immediately to the left of the tornado

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and just to the right of the large hail

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those in the notch are in danger of the

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sharp left turns that tornadoes often

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make when they are dissipating if the

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tornado can be seen successful escapes

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can be made however heavy rain May hide

play21:56

the tornado in that case radar updates

play21:59

may be the only way of knowing where the

play22:01

tornado is located but in the case of

play22:04

the ELO storm the tornado moved 2 miles

play22:07

north in less than 5 minutes less than

play22:10

the interval of a wsr88d volume scan

play22:14

Additionally the radar cannot pinpoint

play22:16

the exact location of the tornado with

play22:19

certainty so you should not depend on

play22:21

radar to know where the tornado is and

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even if the position of a tornado is

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known strong INF winds may hinder a

play22:29

quick escape this almost certainly was

play22:32

the case for the twistex team on Rudder

play22:35

Road as mentioned previously new

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tornadoes are always a danger in the

play22:40

Notch and of course there's the Lesser

play22:43

thread of very large glass-breaking hail

play22:46

in the core of the storm in the path of

play22:50

an approaching tornado a Quick Escape

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may not be possible a lack of good road

play22:55

options poor road conditions or even TR

play22:57

traffic may hinder a safe escape and in

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the case of the eleno tornado numerous

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traffic jams were reported it appears

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that these traffic jams may have

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resulted in the deaths of at least three

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people in three different cars based on

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these lessons we suggest that storm

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spotters and Chasers Place more distance

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between themselves in the tornado

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especially on days when parameters are

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particularly volatile when the

play23:23

instability and sheer combination is

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high the storm Evolution may occur more

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quickly decreasing the margin for error

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moreover given the Rarity of the

play23:33

ingredients that produced the alino

play23:35

tornado storm Behavior May differ

play23:37

greatly from more normal tornado days

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for example on June 8th 1995 a very

play23:43

large tornado accelerated to nearly 60

play23:45

MPH near Allison Texas before slowing

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down to nearly stationary you may have

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seen videos of people who escaped death

play23:53

and serious injury when their vehicles

play23:55

were hit by the eleno tornado

play23:58

but it's critical to remember that in

play24:00

most of these cases the vehicles were

play24:02

not impacted by the strongest winds in

play24:04

the tornado it is possible that this has

play24:07

resulted in a false sense of security

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within the storm observing Community the

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most powerful winds in a tornado are

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located in sub vortices which are

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smaller tornadoes within the larger

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circulation these are the vortices

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responsible for leveling one house but

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leaving a house next door unscathed

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given the small area they occupy the

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probability of being hit is actually

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rather low however as the number of

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Close Encounters increase the odds

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increase that more Chasers will

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encounter these deadly winds this is

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especially true now given the growing

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trend of extreme

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chasing remember that no footage report

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or data is worth your life of the eight

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deaths in the tornado at least four were

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Chasers there will always be more storms

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e

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for

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