Tag: spc

Official

SPC Mar 20, 2025 1300 UTC Day 1 Convective Outlook

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0743 AM CDT Thu Mar 20 2025 Valid 201300Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm development will be possible today in parts of the Mid-Atlantic and northern Rockies. Severe weather is not expected. ...Eastern NC/southeast VA this afternoon... A midlevel trough and an associated surface cold front will progress eastward from the Appalachians to the Atlantic coast by late this evening/early tonight. Only a narrow corridor of low-level moistening is expected ahead of the front, as a result of only partial air
Official

SPC Mar 20, 2025 0600 UTC Day 1 Convective Outlook

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1146 PM CDT Wed Mar 19 2025 Valid 201200Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm development will be possible today in parts of the Mid-Atlantic and northern Rockies. Severe weather is not expected. ...Synopsis and Discussion... A strong upper trough will move rapidly across the eastern states today, with primary midlevel speed max sweeping across the Gulf Coast states and nosing into the Carolinas during the afternoon. Cooling aloft with this system will be substantial as a band of strong meridional flow
Official

SPC Mar 20, 2025 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0757 PM CDT Wed Mar 19 2025 Valid 200100Z - 201200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM INDIANA INTO CENTRAL KENTUCKY AND FAR WESTERN OHIO... ...SUMMARY... Scattered severe thunderstorms remain possible this evening mainly over Indiana, parts of Kentucky and into Tennessee. ...IN into western KY... A primary line of storms stretches from central IN into western KY and TN as of 01Z, with secondary line of storms along the IL/IN border in association with the cold front. Given the loss of
Official

SPC MD 243

MD 0243 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR CENTRAL ILLINOIS Mesoscale Discussion 0243 NWS Storm Prediction Center Norman OK 1121 AM CDT Wed Mar 19 2025 Areas affected...central Illinois Concerning...Severe potential...Watch possible Valid 191621Z - 191845Z Probability of Watch Issuance...60 percent SUMMARY...A gradual intensification of thunderstorm activity is likely across parts of southeastern Iowa into west central into central Illinois through 1-3 PM CDT. This may include increasing potential for a couple of tornadoes, severe hail and locally strong surface gusts. Trends are being monitored for the possibility of a watch, which appears more probable across parts of central/eastern Illinois later
Official

SPC MD 244

MD 0244 CONCERNING HEAVY SNOW FOR CENTRAL WI...SOUTHERN MI UPPER PENINSULA Mesoscale Discussion 0244 NWS Storm Prediction Center Norman OK 1217 PM CDT Wed Mar 19 2025 Areas affected...Central WI...southern MI Upper Peninsula Concerning...Heavy snow Valid 191717Z - 192015Z SUMMARY...Heavy snow, with rates of 1 to 2 inches per hour, will continue and expand northeast across the discussion area this afternoon. DISCUSSION...Upper-level low pressure over northeast KS will continue moving steadily east as an accompanying surface low moves from northern MO into northern IL by late afternoon. As surface temperatures cool, snow will expand in coverage in response to increasing
Official

SPC Tornado Watch 57

WW 57 TORNADO IA IL IN 191715Z - 200200Z URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 57 NWS Storm Prediction Center Norman OK 1215 PM CDT Wed Mar 19 2025 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Far Eastern Iowa Northern and Central Illinois Western Indiana * Effective this Wednesday afternoon and evening from 1215 PM until 900 PM CDT. * Primary threats include... A few tornadoes and a couple intense tornadoes possible Scattered damaging wind gusts to 70 mph possible Scattered large hail events to 1.5 inches in diameter possible SUMMARY...Scattered
Official

SPC Mar 19, 2025 1730 UTC Day 2 Convective Outlook

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1136 AM CDT Wed Mar 19 2025 Valid 201200Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm development will be possible on Thursday in parts of the Mid-Atlantic and northern Rockies. A severe threat is not expected. ...Synopsis... A mid-level trough will traverse the Rockies as a second upper trough ejects into the Atlantic tomorrow (Thursday). A surface cold front will accompany the East Coast trough, immediately preceded by marginal low-level moisture (e.g. low 50s F surface dewpoints). Scant buoyancy, driven by the meager