Tag: 1730

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1122 AM CST Wed Jan 15 2025 Valid 161200Z - 171200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Thursday. ...Discussion... An upper trough over the eastern U.S. will advance slowly eastward Thursday, while the next feature -- a short-wave trough over western Canada -- digs southeastward, moving into the northwestern/north-central U.S. overnight. At the surface, cold/dry/stable conditions will persist. A pronounced cold front, associated with the digging/western upper system, will likewise shift southeastward out of Canada, but preceding high pressure will preclude

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1103 AM CST Wed Jan 08 2025 Valid 091200Z - 101200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast through Thursday night. ...TX/LA... A northern-stream shortwave impulse should phase with an initially closed mid/upper low in the Gulf of CA vicinity, yielding a longwave trough from south-central Canada to northwest Mexico by Thursday night. Downstream low-level warm-moist advection will foster increasingly widespread precipitation across the South-Central States on Thursday as a surface cyclone becomes established off the western Gulf Coast. Despite ample

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1122 AM CST Tue Jan 07 2025 Valid 081200Z - 091200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Very isolated thunderstorms will be possible Wednesday night across parts of west Texas. ...West TX... A closed mid/upper low will drift southeast across the Gulf of CA vicinity. Downstream of this wave, warm-moist advection at 700 mb should eventually yield scant buoyancy with mixed-phase states in elevated parcels amid steep mid-level lapse rates. Isolated convection should develop overnight Wednesday into early Thursday, most of which should occur atop

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1115 AM CST Mon Jan 06 2025 Valid 071200Z - 081200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Tuesday through Tuesday night. ...Southwest... A positive-tilt shortwave trough will close off over the Lower CO Valley into the northern Gulf of CA vicinity by early Wednesday. The lobe of ascent downstream of the trough should largely become centered across eastern AZ on Tuesday night. Amid rather steep mid-level lapse rates, minimal elevated buoyancy emanating from below-freezing parcels should develop. While scattered light showers

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1119 AM CST Sun Jan 05 2025 Valid 061200Z - 071200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF SOUTHERN GEORGIA AND INTO NORTHERN AND WESTERN FLORIDA... ...SUMMARY... Thunderstorms -- a couple of which may be strong to potentially severe -- will be possible across parts of the Southeast on Monday. ...Synopsis... A weakening mid-level short-wave trough is forecast to advance quickly eastward across the central and southern Appalachians Monday, and then off the Mid-Atlantic Coast Monday night. South of this trough

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1134 AM CST Sat Jan 04 2025 Valid 051200Z - 061200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS NORTHEASTERN LOUISIANA...FAR SOUTHEASTERN ARKANSAS...AND INTO WESTERN MISSISSIPPI... ...SUMMARY... Strong/severe thunderstorms are expected Sunday afternoon and evening from the Sabine River Valley into the lower to mid Mississippi Valley and central Gulf Coast states. Severe wind gusts, tornadoes and hail will be the primary threats. ...Synopsis... A mid-level closed low -- initially over the western Kansas vicinity -- is progged to advance steadily eastward Sunday, reaching

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Fri Jan 03 2025 Valid 041200Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible early Sunday morning across parts of the southern and central Plains eastward across the Ozarks. No severe weather is expected. ...Discussion... While a deep upper low will remain over eastern Canada and New England Saturday, the main feature aloft associated with the primary convective potential will be a short-wave trough initially over the Great Basin vicinity. This feature is forecast to strengthen with time

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1118 AM CST Thu Jan 02 2025 Valid 031200Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Sporadic lightning flashes may occur Friday afternoon and evening over the coastal Pacific Northwest. Severe weather is not expected. ...Synopsis... The pattern on Friday will feature an upper trough over the eastern CONUS, with a western ridge breaking down late. The shortwave trough responsible for the ridge breakdown will provide rapid cooling aloft late in the day from northern CA into western WA and OR, and overnight across

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1102 AM CST Wed Jan 01 2025 Valid 021200Z - 031200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected Thursday. ...Synopsis... Moderate to strong northwest flow aloft will exist across the CONUS on Thursday, extending from an upper ridge over the West Coast to the East Coast. As this western ridge shifts eastward, a tightening midlevel thermal gradient will develop over the Plains, with a minor trough amplification from the Mid/Lower MS Valley into the Southeast. At the surface, high pressure will maintain a