BBS: TELESC.NET.BR Assunto: DAY3SVR: Nws Storm Prediction Center Norman Ok De: COD Weather Processor Data: Sat, 30 May 2026 07:31:43 +0000 ----------------------------------------------------------- ACUS03 KWNS 300731 SWODY3 SPC AC 300730 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0230 AM CDT Sat May 30 2026 Valid 011200Z - 021200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE CENTRAL U.S....AND FROM THE CAROLINAS INTO THE SOUTHERN APPALACHIANS... ...SUMMARY... Thunderstorms with isolated severe wind gusts and hail will be possible on Monday from the central Plains eastward into the mid Mississippi Valley, and across parts of the Carolinas and southern Appalachians. ...Central Plains/Lower To Mid Missouri Valley/Mid Mississippi Valley/Northern Ozarks... Mid-level heights will rise across the central U.S. on Monday as a ridge builds northward across the region. A broad moist sector will be in place from the central Plains eastward into the mid Mississippi Valley, where surface dewpoints are forecast to be in the mid 60s to lower 70s F. As surface temperatures warm during the day, moderate to strong instability will develop over much of this airmass. Due to rising heights, large-scale ascent in the central U.S. will be limited. However, model forecasts suggest that zones of low-level convergence will become focused, most prominently from southern Kansas eastward into the northern Ozarks and mid Mississippi Valley. Isolated thunderstorms may form along these zones of convergence during the afternoon. The strongest instability is forecast over eastern Kansas and western Missouri, where forecast soundings have MLCAPE peaking in the 3000 to 4000 J/kg range. In addition, 0-6 km shear in this area is forecast to be in the 25 to 30 knot range, which should be enough to support an isolated severe threat. Hail and severe wind gusts will be possible. Further west into parts of central High Plains, some model forecasts show an axis of low-level moisture and instability from western Kansas into eastern Colorado Monday afternoon. Thunderstorms that can develop near this axis of instability during the mid to late afternoon may be associated with hail and isolated severe wind gusts. ...Carolinas/Southern Appalachians... An upper-level trough is forecast to move southward from the Great Lakes into the central Appalachians on Monday. At the surface, a slow-moving cold front is forecast to be located from the lower Ohio Valley southeastward into the Carolinas. South of the front, surface dewpoints are forecast to be in the 60s F. Lift along the frontal zone will support thunderstorm development, with these storms moving southeastward into the moist sector during the afternoon. Model forecasts to the south of the front in South Carolina suggest that MLCAPE will peak in the 1000 to 1500 J/kg range. In addition, moderate deep-layer shear and steep low-level lapse rates are forecast. This could be enough for an isolated potential for severe wind gusts. ..Broyles.. 05/30/2026 $$ = = = 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]