Tag: day

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1124 AM CDT Fri Mar 21 2025 Valid 211630Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast today. ...Iowa Vicinity... An upper shortwave trough will move across the Midwest today and tonight, with increasing deep-layer west/northwest flow associated with this feature overspreading the region. Boundary layer moisture will remain scant ahead of an east/southeast moving cold front sweeping across the Lower MO/Mid-MS Valley this afternoon and evening. Nevertheless, very cold temperatures aloft (near -25 C at 500 mb, as sampled

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1146 PM CDT Thu Mar 20 2025 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast today. ...Synopsis... A northwest flow regime will exist across the CONUS today, with multiple embedded waves. In general, minimal thunderstorm activity is forecast due to a relatively stable air mass due to high pressure. One such high will be situated over the Southeast and into the Gulf through the period, with minimal moisture return into southern TX. Another surface high will be centered

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1159 AM CDT Thu Mar 20 2025 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected Friday. ...Mid-MO/MS Valleys... A compact shortwave impulse currently over the northern Rockies will progress across parts of the Mid-MO/MS Valleys Friday. Despite a dearth of low-level moisture, diurnally steepening lapse rates along with a focused corridor of moderate large-scale ascent should support a swath of isolated to scattered low-topped convection, primarily from late morning to early evening. Meager buoyancy should be adequate for

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1110 AM CDT Thu Mar 20 2025 Valid 201630Z - 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... Strong heating ahead of an eastward-developing surface front will allow temperatures to continue climbing into the 70s F this afternoon. Boundary layer moisture is expected to remain modest, with surface dewpoints generally reaching the mid/upper 50s F in a narrow corridor just as the surface front

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

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

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

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

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1059 AM CDT Wed Mar 19 2025 Valid 191630Z - 201200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON/EVENING FOR PARTS OF CENTRAL/NORTHERN ILLINOIS AND WEST CENTRAL INDIANA... ...SUMMARY... Scattered severe thunderstorms are possible this afternoon/evening from central/northern Illinois to western Indiana. A few tornadoes, large hail, and damaging wind gusts will be possible. ...IL/IN vicinity into early tonight... A deep (990mb) surface low over northwest MO this morning will continue to shift east into northern IL through late afternoon, and into IN/MI

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0745 AM CDT Wed Mar 19 2025 Valid 191300Z - 201200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON/EVENING FOR PARTS OF CENTRAL/NORTHERN ILLINOIS AND WEST CENTRAL INDIANA... ...SUMMARY... Scattered severe thunderstorms are possible this afternoon/evening from central/northern Illinois to western Indiana. A few tornadoes, large hail, and damaging wind gusts will be possible. ...IL/IN this afternoon into early tonight... A deep (989 mb) cyclone near the northeast KS/northwest MO border will move northeastward to northern IL by this evening and Lower MI