SPC Mar 21, 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 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 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
SPC Mar 17, 2025 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1227 AM CDT Mon Mar 17 2025 Valid 171200Z - 181200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast. ...Discussion... Large-scale pattern has allowed significant offshore flow to develop along the Atlantic/Gulf Coasts as surface ridging settles deep into the Gulf Basin. While a few weak thunderstorms may develop beneath a cold mid-level trough along the Carolina Coast later this afternoon, a dearth of deep convection is expected east of the Rockies during the day1 period. Across the western CONUS, a seasonally
SPC Mar 16, 2025 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1224 AM CDT Sun Mar 16 2025 Valid 161200Z - 171200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE UPPER OHIO VALLEY TO THE CENTRAL FLORIDA PENINSULA... ...SUMMARY... Sporadic damaging wind swaths and a few tornadoes will be the primary threats this morning through dusk across a broad portion of the East. ...OH Valley/northern Middle Atlantic... Seasonally strong upper trough, though bimodal in nature, will shift into the OH Valley/Southeast by the end of the period. Ahead of the main trough, a lead
SPC Feb 17, 2025 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1116 PM CST Sun Feb 16 2025 Valid 171200Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... No areas of thunderstorm activity are forecast across the CONUS today. ...Discussion... A trough will depart the eastern US today, with zonal flow temporarily settling in across the CONUS. At the surface, a cold front will be moving southward across the Florida peninsula early in the period. A storm or two may linger into the early D1 period along the departing front, however, coverage will remain sparse before quickly
SPC Feb 16, 2025 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1143 PM CST Sat Feb 15 2025 Valid 161200Z - 171200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN A PART OF THE SOUTHEAST STATES... ...SUMMARY... Scattered damaging winds and a brief tornado are possible through midday from north Florida to the Savannah River Valley. Isolated damaging winds and a brief tornado are also possible northward into parts of the Lower Mid-Atlantic region through the afternoon. ...FL/GA... An extensive QLCS ongoing from parts of the TN Valley to the central Gulf Coast should reach
SPC Feb 15, 2025 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1139 PM CST Fri Feb 14 2025 Valid 151200Z - 161200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE LOWER MISSISSIPPI VALLEY...MID-SOUTH...AND CENTRAL GULF STATES... ...SUMMARY... Severe weather is expected from East Texas and Mid-South into much of the Southeast. Scattered to numerous damaging wind gusts and a few tornadoes are the primary threats. Storms are expected from late afternoon through the overnight hours. ...Discussion... Strong 500mb jet is currently digging southeast across the lower CO River Valley. This feature is
SPC Jan 21, 2025 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1046 PM CST Mon Jan 20 2025 Valid 211200Z - 221200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk for thunderstorms appears negligible across the U.S. today through tonight. ...Discussion... Ridging to the north of the blocking mid-level high centered over the mid-latitude eastern Pacific is rebuilding, as an initially suppressing short wave perturbation progresses inland across British Columbia. The latter feature is forecast to dig through the northern U.S. Rockies and adjacent Great Plains by 12Z Wednesday, reinforcing large-scale troughing now encompassing much of central
SPC Jan 20, 2025 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1101 PM CST Sun Jan 19 2025 Valid 201200Z - 211200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk for thunderstorms appears negligible across the U.S. today through tonight. ...Discussion... A significant short wave perturbation is forecast to continue progressing through the crest of blocking larger-scale mid-level ridging centered over the northeastern Pacific, eventually digging across the Canadian Rockies and adjacent Pacific Northwest by late tonight. Downstream, short wave ridging likely will overspread the Canadian Prairies, northern U.S. Rockies and Great Basin, in the wake of
SPC Jan 19, 2025 0600 UTC Day 1 Convective Outlook
SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1100 PM CST Sat Jan 18 2025 Valid 191200Z - 201200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS THIS MORNING INTO THIS AFTERNOON ACROSS CENTRAL FLORIDA... ...SUMMARY... Strong thunderstorms may impact parts of central Florida this morning into this afternoon, and pose at least some risk for a tornado and locally damaging wind gusts. ...Synopsis... Seasonably cold, stable conditions will generally prevail across the U.S. through this period and beyond. A blocking mid-level ridge, centered over the northeastern Pacific, may undergo some suppression and