La Nina Is Coming For Fall & Winter 2024/25...

Summary

The video discusses upcoming weather patterns, highlighting an Omega blocking pattern over the U.S., which brings a mix of hot and cool conditions. The South Central U.S. faces high pressure and heat, while cooler air dominates the Ohio Valley, Great Lakes, and Mid-Atlantic regions. A weak La Niña is expected to develop during fall, potentially leading to a drier southern U.S. and more active hurricane season. Cooler temperatures and unsettled weather are forecasted for parts of the Midwest and Northeast, especially as we transition into September, the heart of hurricane season.

Takeaways

• 🌡️ A ridge of high pressure is dominating the South Central States, creating very hot temperatures, while cooler, unsettled conditions persist in the Ohio Valley and Northeast.
• 🌀 The pattern shows an Omega blocking setup, with a ridge over central US and a trough bringing cooler air from the Pacific Northwest.
• 🌊 La Niña conditions are expected to return during the fall, but predictions suggest it will be weak to moderate and short-lived compared to the previous La Niña.
• 📉 The current trough is pushing cooler weather into the Great Lakes and Ohio Valley, with cooler-than-usual temperatures reaching as far as Florida.
• 🌧️ Unsettled weather with heavy rains and lower pressures will persist in the Ohio Valley, Mid-Atlantic, and Northeast.
• 🔥 The central US continues to experience above-average temperatures, but the ridge is slowly weakening, allowing for some cooling in the coming weeks.
• 🌪️ Hurricane season is expected to intensify in September, with 60-80% of storms typically forming between late August and mid-October.
• 🌬️ A less active subtropical jet stream is anticipated, leading to drier conditions in southern regions, while the Pacific Northwest remains rainy and cool.
• 🌊 Ernesto, a storm in the Atlantic, will keep cooler weather in place for parts of the East Coast, but no other major storms are expected in late August.
• 📉 Cooler-than-average temperatures and unsettled weather are expected to dominate the Great Lakes, Ohio Valley, and Mid-Atlantic into September, alongside potential hurricane activity in the Southeast.

Q & A

What is the current weather condition over the South Central States?

The South Central States are experiencing hot temperatures due to a dominating Ridge of high pressure.

Which regions are experiencing unsettled conditions and why?

The Ohio Valley, much of the Tennessee Valley, into the midatlantic, and portions of the Northeast are experiencing unsettled conditions due to lower pressures, trough Northwest flow.

What weather pattern is expected to continue in the Pacific Northwest?

The Pacific Northwest is expected to continue experiencing cooler air and unsettled conditions due to the predominant flow from the region.

What is an Omega blocking pattern and how does it affect the weather?

An Omega blocking pattern is characterized by a Ridge of high pressure locked over the central US, expanding into Canada, and a trough coming in off the Pacific Northwest, leading to unsettled conditions with severe storms, damaging winds, and heavy rains in certain areas.

What does the climate prediction center indicate about the upcoming fall months?

The climate prediction center indicates a transition into La Niña conditions as fall months approach, although it is not expected to be very strong.

How is the presence of Tropical Storm Ernesto affecting the weather?

Tropical Storm Ernesto is causing cooler anomalies to be brought down into Florida due to its backside flow, and it is expected to keep the cooler anomalies along the East Coast.

What weather conditions are expected in the Great Lakes region over the next five days?

The Great Lakes region can expect unsettled weather, lower pressures, and cooler, almost fall-like conditions over the next five days.

How does the script describe the weather forecast for the Pacific Northwest in the long range?

The long-range forecast for the Pacific Northwest indicates a continuation of the Omega blocking pattern, with unsettled weather and a tendency towards a cooler and rainy climate.

What is the expected impact of La Niña on the hurricane season?

The expected impact of La Niña on the hurricane season is a less active subtropical jet stream, which typically results in a drier time frame for the southern regions and more upward Rising motion air, potentially leading to an active hurricane season.

What are the predicted weather conditions for the East Coast as we head into September?

The East Coast is predicted to remain very wet with a lot of upward Rising motion air as we head into September, which is typically the busiest month for hurricane activity.

How does the script suggest the weather will change as we move into the fall season?

As we move into the fall season, the script suggests that the Omega blocking pattern will continue, with cooler anomalies for the Pacific Northwest, ridging over the Southwest and South Central States, and continued troughing inversions for the Great Lakes, Ohio, and Tennessee Valley.