All current SPC Products

No watches are valid as of Wed Jan 22 07:01:02 UTC 2025.

MD 0054 CONCERNING WINTER MIXED PRECIPITATION FOR PORTIONS OF SOUTHERN GEORGIA INTO NORTHERN FLORIDA Mesoscale Discussion 0054 NWS Storm Prediction Center Norman OK 1052 PM CST Tue Jan 21 2025 Areas affected...portions of southern Georgia into northern Florida Concerning...Winter mixed precipitation Valid 220452Z - 220745Z SUMMARY...A wintry mix should continue into the early morning hours, with instances of moderate snow, sleet, and perhaps freezing rain expected. DISCUSSION...A belt of strong 700 mb warm-air and moisture advection is overspreading southern GA into northern FL in response to a rapidly approaching mid-level trough. While RAP forecast soundings suggest that much of the vertical profile below 600 mb may be above freezing at several locales, 04Z mesoanalysis shows strong surface-850 mb CAA impinging on the GA/FL border, where MRMS mosaic radar data shows bright banding taking place, and where surface observations indicate snow, sleet, and freezing rain […]

SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1147 PM CST Tue Jan 21 2025 Valid 231200Z - 241200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast on Thursday. ...Synopsis... A cool and stable pattern will persist on Thursday across the CONUS, with a sprawling area of high pressure stretching from the Great Basin to the East Coast. An elongated, positive-tilt upper trough will extend from Quebec southwestward across the Great Lakes and into the southern High Plains by 00Z, and will move toward the MS Valley into Friday morning. Given high pressure at the surface, and generally dry westerly flow above the stable surface layer over the Southeast, thunderstorms remain unlikely. ..Jewell.. 01/22/2025 Read more

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1037 PM CST Tue Jan 21 2025 Valid 221200Z - 231200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk for thunderstorms appears negligible across the U.S. today through tonight. ...Discussion... Models indicate that mid-level ridging across the far western Canadian Provinces will become suppressed by another short wave perturbation emerging from the upstream mid-latitude Pacific, but not before downstream troughing continues to dig southeast and south of the northern U.S. Rockies. This will reinforce larger scale troughing across much of the interior into eastern United States. Although surface ridging initially across much of the Gulf Coast and Atlantic Seaboard is forecast to weaken, seasonably cold and stable boundary-layer conditions may be slow to moderate. It appears that another expansive surface ridge will build across the Great Basin/Rockies into the Great Plains, […]