BBS: TELESC.NET.BR Assunto: DAY48SVR: Nws Storm Prediction Center Norman Ok De: COD Weather Processor Data: Fri, 20 Mar 2026 08:44:10 +0000 ----------------------------------------------------------- ACUS48 KWNS 200844 SWOD48 SPC AC 200842 Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0342 AM CDT Fri Mar 20 2026 Valid 231200Z - 281200Z ...DISCUSSION... ...Monday/Day 4 to Wednesday/Day 6... An upper-level trough is forecast to move across the eastern U.S. on Monday, as a cold front advances southward into the Carolinas. Thunderstorm development will be possible in parts of the Carolinas Monday afternoon. Instability is forecast to be weak, but a marginal severe threat could develop in areas that heat up the most. On Tuesday and Wednesday, northwest mid-level flow is forecast over much of the eastern two-thirds of nation. This pattern will keep a warm and dry airmass in place over the continental U.S., making thunderstorms unlikely in most areas. ...Thursday/Day 7 and Friday/Day 8... Mid-level flow is forecast to become more westerly across the central and eastern U.S. on Thursday. In response, low-level moisture return is forecast from the Ark-La-Tex into the mid Mississippi Valley. Thunderstorm development will be possible from Thursday afternoon into the overnight period across the lower to mid Missouri Valley into the Ohio Valley, as a mid-level jet streak passes through the north-central U.S. On Friday, a continued chance for thunderstorm development will be possible from the mid Mississippi Valley into the southern Appalachians. Although a severe threat may develop on either Thursday or Friday, low predictability exists concerning any specific scenario. ..Broyles.. 03/20/2026 = = = 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]