Tag: day

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0648 AM CST Sun Feb 09 2025 Valid 091300Z - 101200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... A low risk for a few thunderstorms exists early in the period across the Mid-South region. ...Synopsis... Broadly cyclonic flow aloft, with several embedded shortwave troughs, is expected across the northern CONUS today. Largely zonal flow is anticipated across the southern CONUS, with negligible height changes. Recent surface analysis shows an expansive area of high pressure associated with a dry, continental airmass covering much of the central and

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0636 PM CST Sat Feb 08 2025 Valid 090100Z - 091200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms may be noted early this evening. ...01z Update... Low-amplitude short-wave trough is ejecting across the Great Lakes/Ohio Valley region early this evening. Primary corridor for large-scale ascent is now focusing across the upper OH Valley into the northern Middle Atlantic, as LLJ strengthens ahead of the short wave. Widespread precipitation is noted within the warm advection zone but elevated convection is gradually weakening, and only a

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0644 AM CST Sat Feb 08 2025 Valid 081300Z - 091200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated to scattered thunderstorm development is possible across parts of the Ohio Valley today. ...Ohio Valley... A low-amplitude shortwave trough currently extends from western ND southwestward through western/central WY. This shortwave is expected to progress quickly eastward throughout the day, moving across the Great Lakes and reaching the Northeast by early tomorrow. In response, the surface low currently over central OK is forecast to rapidly translate northeastward through

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0627 PM CST Fri Feb 07 2025 Valid 080100Z - 081200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected tonight. ...01z Update... Notable short-wave trough is ejecting across the northern Rockies into the northern high Plains early this evening. Trailing influence of this feature contributed in part to convection along the trailing cold front across southeast ID/northern UT/southern WY. However, buoyancy is decreasing along this boundary, and further boundary-layer cooling will not prove beneficial for deep convection capable of attaining levels necessary for lightning.

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0646 AM CST Fri Feb 07 2025 Valid 071300Z - 081200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected through Friday night. ...Synopsis and Discussion... Predominantly zonal upper flow is currently in place across the CONUS as one shortwave trough progresses through the Canadian Maritimes and another moves through the Pacific Northwest. High surface pressure is expected the shift eastward across the OH Valley in the wake of the Canadian Maritime shortwave. A weakening cold front exists between the more continental air

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0648 PM CST Thu Feb 06 2025 Valid 070100Z - 071200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN PARTS OF EASTERN TN AND FAR SOUTHEAST KY/SOUTHWEST VA... ...SUMMARY... Isolated severe thunderstorms may persist through about Midnight EST in vicinity of eastern Tennessee and far southeast Kentucky/southwest Virginia. ...Eastern TN and far southeast KY/southwest VA... Messy and occasionally transient supercell structures are ongoing across parts of far southeast KY into eastern TN, amid a favorable deep-layer wind profile and moderate 0-1 km shear. Some