Tag: utc

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0730 AM CDT Mon Apr 21 2025 Valid 211300Z - 221200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE UPPER OHIO VALLEY AND LOWER GREAT LAKES...AND PORTIONS OF THE SOUTHEAST... ...SUMMARY... Isolated strong to severe thunderstorms are possible today across the upper Ohio Valley/lower Great Lakes and parts of the Southeast. Damaging winds and marginally severe hail are the primary risks. ...Upper Ohio Valley to the Lower Great Lakes... An upper trough with an attendant 55-70 kt mid-level jet will advance

SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0253 PM CDT Sun Apr 20 2025 Valid 202000Z - 211200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS NORTHERN ARKANSAS AND MISSOURI VICINITY... ...SUMMARY... Severe thunderstorms are expected today across parts of the ArkLaTex into the Ozarks and mid Mississippi Valley, mainly this afternoon and evening. The best corridor for tornadoes (some of which could be strong) and scattered to numerous damaging winds should exist from central/northern Arkansas into Missouri. ...20z Update.. A broken line of thunderstorm activity continues near the surface low