Tag: spc

Official

SPC Dec 19, 2024 1300 UTC Day 1 Convective Outlook

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0636 AM CST Thu Dec 19 2024 Valid 191300Z - 201200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected through tonight. ...Synopsis/Discussion... The upper-tropospheric pattern is evolving back to an eastern mean trough and western ridge for a few days, as a series of shortwave troughs dig southeastward from the northern/central Plains and upstream parts of western/central Canada. Low-level cold frontal passage related to the eastern troughing will render the airmass east of the Rockies too dry and/or stable for thunderstorms over land for
Official

SPC Dec 19, 2024 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0245 AM CST Thu Dec 19 2024 Valid 221200Z - 271200Z ...DISCUSSION... Strong surface high pressure and a dearth of boundary-layer moisture will limit thunderstorm potential on Day 4/Sun. Starting Day 5/Mon, a progressive upper level pattern is forecast, and a series of shortwave trough will migrate across the Plains to the Midwest. As this occurs, surface lee troughing will support south/southeasterly low-level flow across the southern Plains and the Gulf of Mexico. Modest boundary-layer moisture will being to return northward across TX toward OK by early
Official

SPC Dec 19, 2024 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0646 PM CST Wed Dec 18 2024 Valid 190100Z - 191200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms will largely diminish across the Southeast tonight. ...Southeast... Isolated thunderstorms persist across parts of the Carolinas into the FL Panhandle, and separately over the south FL Peninsula. Within a weakly buoyant warm-moist sector ahead of this activity, overall convective potential will generally diminish. This will occur more rapidly overnight as large-scale ascent weakens/shifts off the South Atlantic Coast. Thunderstorms will be relegated to the Gulf Stream during