SPC Nov 22, 2024 Day 4-8 Severe Weather Outlook
Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0338 AM CST Fri Nov 22 2024 Valid 251200Z - 301200Z ...DISCUSSION... Models are in good agreement with the general pattern on Mon/D4, depicting a midlevel speed max nosing into the central Plains Monday morning, then phasing with an upper trough over the northern Plains. This should then result in an amplified shortwave trough moving across the Midwest and Great Lakes through Tue/D5 morning. An associated cold front will shunt the young moist plume back south toward the Gulf Coast. This trough is then expected to eject
SPC Nov 21, 2024 1930 UTC Day 3 Severe Thunderstorm Outlook
SPC 1930Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0129 PM CST Thu Nov 21 2024 Valid 231200Z - 241200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms appear unlikely across the CONUS Saturday. ...Synopsis... Mid-level flow across the CONUS is forecast to become more zonal with time as prominent troughing on either coast gradually deamplifies. Ridging over the central CONUS will weaken and shift eastward as the East Coast trough moves offshore. To the west, strong mid-level flow will move inland across the Pacific Northwest and northern Rockies as the upper low cuts
Prepare Now for Severe Winter Weather to End the Week
Prepare Now for Severe Winter Weather to End the Week CHICAGO – With forecasts of snow, high winds and icy conditions Thursday, followed by dangerously low temperatures through the weekend, the Federal Emergency Management Agency (FEMA) wants individuals and families to take precautions to protect against the hazards severe winter weather may bring. “Icy roads and blowing snow can make travel extremely hazardous,” said Kevin M. Sligh, acting regional administrator, FEMA Region 5. “Stay inside your home as much as possible; if you must drive, bring an emergency kit that includes an ice scraper, blanket and flashlight, and keep the
SPC Nov 21, 2024 Day 4-8 Severe Weather Outlook
Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0345 AM CST Thu Nov 21 2024 Valid 241200Z - 291200Z ...DISCUSSION... Models indicate a relatively strong zonal pattern over much of the CONUS for Sun/D4 into Mon/D5, with a shortwave trough skirting the Great Lakes area. Then, through the Thu/D8 period, there is a possibility of a low-amplitude trough amplification within this strong belt of flow, moving across the southern Plains and Southeast. Predictability for this later scenario is low at this time, as there is little run-to-run consistency. However, the air mass over the western
SPC Nov 21, 2024 0830 UTC Day 3 Severe Thunderstorm Outlook
SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0148 AM CST Thu Nov 21 2024 Valid 231200Z - 241200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms appear unlikely across the USA on Saturday. ...Synopsis... A temporary/weakening upper ridge will exist over the Plains, with a departing trough over the Northeast and a broad region of west/southwest flow aloft over the West. By 12Z Sunday, this ridge will all but disappear due in part to an upper wave from MT into ND, and continued height falls across the West. The beginnings of moisture return will