Tag: convective

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1246 AM CDT Wed Mar 26 2025 Valid 261200Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE PACIFIC NORTHWEST... ...SUMMARY... Severe thunderstorms are forecast across parts of the Pacific Northwest this afternoon and evening. Supercells are expected west of the Cascades across Oregon into Washington. These may produce large hail, perhaps a brief tornado, and locally strong gusts. ...Pacific Northwest... Seasonally strong upper low off the Pacific Northwest Coast will shift east today as a 100+kt 500mb speed max

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1225 PM CDT Tue Mar 25 2025 Valid 261200Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN PARTS OF THE PACIFIC NORTHWEST... ...SUMMARY... Severe thunderstorms are possible across parts of the Pacific Northwest on Wednesday afternoon and evening. Coverage should be mostly isolated, but a more probable corridor for a few supercells is apparent west of the Cascades. These may produce large hail, a brief tornado, and locally strong gusts. ...Pacific Northwest... Confidence is sufficient for an upgrade to level 2-SLGT risk

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1055 AM CDT Tue Mar 25 2025 Valid 251630Z - 261200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER SOUTHEAST FL...AND OVER PARTS OF SOUTHERN OK AND NORTH-CENTRAL TX.... ...SUMMARY... Gusty winds, along with some risk for hail, will accompany isolated thunderstorms across the southeastern Florida Peninsula, and parts of southeast Oklahoma and northern/central Texas. ...FL... A broad upper trough is present today over the eastern US, with the southern fringe of stronger westerlies across south FL. Ample low-level moisture and strong heating will

SPC 0600Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1256 AM CDT Tue Mar 25 2025 Valid 261200Z - 271200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE PACIFIC NORTHWEST... ...SUMMARY... Isolated severe thunderstorms are possible across parts of the Pacific Northwest on Wednesday afternoon into the evening. ...Synopsis... Slow progression of the upper pattern -- a general western ridge/eastern trough configuration -- is expected Wednesday. Upstream, an eastern Pacific trough/low will strengthen as it nears the Pacific Northwest Coast. At the surface, a rather ill-defined baroclinic zone will extend

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1228 AM CDT Tue Mar 25 2025 Valid 251200Z - 261200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEAST FLORIDA PENINSULA...AND FROM CENTRAL TEXAS INTO SOUTHEAST OKLAHOMA... ...SUMMARY... Gusty winds, along with some risk for hail, will accompany isolated thunderstorms across the southeastern Florida Peninsula, and parts of southeast Oklahoma into central Texas. ...Southern FL Peninsula... Upper trough is firmly established over the eastern U.S. early this morning. Along the southern fringe of this wave, a low-latitude short-wave trough is digging east-southeast toward

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1220 PM CDT Mon Mar 24 2025 Valid 251200Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast on Tuesday. ...FL Peninsula... In the wake of a low-amplitude shortwave impulse passage on D1, large-scale ascent appears nebulous across the region. Still, pronounced boundary-layer heating should yield at least isolated thunderstorms Tuesday afternoon, mainly along the east coast sea breeze. Cool mid-level temperatures could support hail growth amid moderate buoyancy. Modest deep-layer shear should temper the overall threat, but a few slow-moving

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1108 AM CDT Mon Mar 24 2025 Valid 241630Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON ALONG THE GULF COAST FROM SOUTHEAST LOUISIANA INTO THE FLORIDA PANHANDLE.... ...SUMMARY... Severe thunderstorms are possible today from southern Louisiana eastward to the Florida Panhandle and far southern Georgia. ...Gulf Coast... Clusters of thunderstorms have been affecting parts of southern LA/MS/AL and the FL Panhandle this morning. The effective outflow boundary currently extends from the Delta region of southeast LA eastward across the Gulf

SPC 0600Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1257 AM CDT Mon Mar 24 2025 Valid 251200Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Risk for severe weather appears low at this time across the U.S. on Tuesday. ...Discussion... A very slowly progressing upper pattern -- featuring an eastern U.S. trough and a ridge over the interior West -- will persist across the U.S. Tuesday. Through the second half of the period, an eastern Pacific trough is forecast to impinge on the West Coast. At the surface, the primary/remnant surface baroclinic zone

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Mon Mar 24 2025 Valid 241200Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHERN LA...MS...AL AND WESTERN FL/GA... ...SUMMARY... A few strong/possibly severe thunderstorms will be possible today from southern Louisiana eastward to southern Georgia and the Florida Panhandle. ...Synopsis... Amplified mid-level flow will progress across the CONUS as an upper trough moves from the Great Lakes into the Northeast, and a ridge builds steadily over the West. A cold front, trailing from a surface low will advance

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1207 PM CDT Sun Mar 23 2025 Valid 241200Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM SOUTHEAST LOUISIANA INTO SOUTHWEST GEORGIA AND THE FLORIDA PANHANDLE... ...SUMMARY... A few strong/possibly severe thunderstorms will be possible Monday morning and afternoon, from southern Louisiana eastward to southern Georgia and the Florida Panhandle. ...Synopsis... An amplified upper pattern is forecast across the CONUS on Monday, with an upper trough pivoting over the eastern U.S. while an upper ridge builds across the West. A surface cold