BBS: TELESC.NET.BR Assunto: DAY48SVR: Nws Storm Prediction Center Norman Ok De: COD Weather Processor Data: Thu, 28 May 2026 08:39:29 +0000 ----------------------------------------------------------- ACUS48 KWNS 280839 SWOD48 SPC AC 280837 Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0337 AM CDT Thu May 28 2026 Valid 311200Z - 051200Z ...DISCUSSION... For much of the D4-D8 period, an upper trough is forecast to reside over the Northeast, with high pressure over the Great Lakes and much of the Midwest to Mid Atlantic. West of this surface high, southerly winds across the Plains will maintain a moist air mass with 60s and 70s F dewpoints prevalent. In the upper levels, a weak negatively tilted trough will shift slowly northward across the northern Plains & Rockies on Sunday/D4 and Monday/D5, providing cooler temperatures aloft and slightly stronger wind speeds. Farther south into the central and southern Plains, winds aloft will be even weaker, however, the midlevels will remain relatively cool, supporting areas of strong instability due to steep lapse rates aloft. In general, areas of strong thunderstorms appear likely on a daily basis across much of the Plains during the peak heating hours. Areas of severe storms will be possible as well due to the widespread 2000+ J/kg MUCAPE, with localized hail & wind potential where clusters develop. The NE/KS/OK/MO area in particular will be within the heart of the instability axis, with 3000-4000 J/kg possible. Predictability is low in this pattern due to lack of large-scale forcing, and the fact that clusters of storms may persist overnight as various outflow boundaries affect storm potential each subsequent day. However, smaller/more focused areas of potential may become evident in subsequent outlook cycles. ..Jewell.. 05/28/2026 = = = 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]