BBS: TELESC.NET.BR Assunto: DAY3SVR: Nws Storm Prediction Center Norman Ok De: COD Weather Processor Data: Wed, 18 Mar 2026 18:56:59 +0000 ----------------------------------------------------------- ACUS03 KWNS 181856 SWODY3 SPC AC 181855 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0155 PM CDT Wed Mar 18 2026 Valid 201200Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... A low chance of a few thunderstorms may develop on Friday near the Upper Ohio Valley and vicinity, and also near the southeast Florida coast. ...Synopsis... An expansive upper ridge will remain in place over most of the western CONUS on Friday. A downstream large-scale upper trough will persist over the East. Within the large-scale trough, one shortwave will move offshore of Florida early in the period, while an upstream shortwave moves across the Great Lakes. A surface low will accompany the Great Lakes shortwave trough as it moves southeastward, as a trailing cold front moves through the Ohio Valley. A low probability (around 10 percent) thunderstorm threat may continue from late D2/Thursday into early D3/Friday near the southeast FL coast. Farther north, modest low-level moistening (with dewpoints increasing to near/above 50 F) may support isolated thunderstorm development during the afternoon and evening near the Upper Ohio Valley, in the vicinity of the advancing cold front. Weak instability is currently expected to limit organized severe-thunderstorm potential. ..Dean.. 03/18/2026 $$ = = = To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. --- SBBSecho 3.28-Linux * Origin: Capitol City Online (1:2320/107) ----------------------------------------------------------- [Voltar]