Tag: utc

Official

SPC Feb 7, 2025 0100 UTC Day 1 Convective Outlook

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
Official

SPC Jan 29, 2025 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0642 PM CST Tue Jan 28 2025 Valid 290100Z - 291200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast across the contiguous United States through tonight. ...Discussion... Thunderstorm activity has waned beneath the upper low across California and Arizona. A few lightning flashes could persist tonight beneath the upper low, but given the boundary layer has already started to cool, expect any additional lightning to be quite isolated. ..Bentley.. 01/29/2025 Read more
Official

SPC Jan 28, 2025 1300 UTC Day 1 Convective Outlook

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0637 AM CST Tue Jan 28 2025 Valid 281300Z - 291200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast across the contiguous United States through tonight. ...Synopsis... Water-vapor imagery loop indicates a split flow upper-air pattern over North America with a closed mid- to upper-level low meandering over the Desert Southwest. A few showers associated with the upper low may become convectively augmented and yield a couple of lightning flashes. Otherwise, docile conditions will prevail across the remainder of the Lower 48
Official

SPC Jan 28, 2025 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0635 PM CST Mon Jan 27 2025 Valid 280100Z - 281200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm potential will remain very low through tonight. ...Synopsis... Thunderstorm activity through late afternoon/early evening has been focused across western AZ under an upper low where very cold temperatures aloft, combined with modest low-level warming, has supported sufficient buoyancy for lightning production. This environment was sampled well by the 00 UTC FGZ sounding; however, buoyancy is expected to quickly diminish as surface temperatures rapidly cool with the loss of