Tag: convective

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1230 AM CDT Thu Mar 27 2025 Valid 271200Z - 281200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE LOWER MISSOURI/MID-MISSISSIPPI VALLEY REGION...AND SOUTH TEXAS... ...SUMMARY... Multiple rounds of severe thunderstorms are possible in south Texas with hail and wind as the primary hazards. Across parts of the Lower Missouri/Mid-Mississippi Valleys, isolated to scattered large hail and localized severe gusts are possible, mainly during the late afternoon and evening. ...South Texas... Complex, slow-moving upper trough will eject across northern Mexico toward deep South

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1221 PM CDT Wed Mar 26 2025 Valid 271200Z - 281200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN SOUTH TX AND THE LOWER MO VALLEY... ...SUMMARY... Multiple rounds of severe thunderstorms are possible in south Texas with hail and wind as the primary hazards. Across parts of the Lower Missouri/Mid-Mississippi Valleys, isolated to scattered large hail and localized severe gusts are possible, mainly during the late afternoon and evening. ...South TX... Extensive deep convection will likely be ongoing across parts of south TX

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1130 AM CDT Wed Mar 26 2025 Valid 261630Z - 271200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS WESTERN PORTIONS OF WASHINGTON/OREGON... ...SUMMARY... Severe thunderstorms are expected across parts of the Pacific Northwest this afternoon and evening, with supercells possible west of the Cascades across Oregon into Washington. These storms may produce large hail, perhaps a tornado or two, and strong wind gusts. ...Pacific Northwest... Satellite imagery this morning shows an upper low approaching the coast with mostly sunny skies over much of

SPC 0600Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 0113 AM CDT Wed Mar 26 2025 Valid 271200Z - 281200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF SOUTHERN TEXAS... ...SUMMARY... Scattered severe thunderstorms are possible Thursday across parts of the southern High Plains, and into southern Texas, as well as over the Lower Missouri/Mid-Mississippi Valleys. ...Southern High Plains across southern Texas... Showers and thunderstorms are forecast to be ongoing early in the period, as a slow-moving southern-stream trough moves eastward across northern Mexico and Texas through the period. Local risk

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