BBS: TELESC.NET.BR Assunto: DAY3SVR: Nws Storm Prediction Center Norman Ok De: COD Weather Processor Data: Sun, 26 Apr 2026 07:31:57 +0000 ----------------------------------------------------------- ACUS03 KWNS 260731 SWODY3 SPC AC 260730 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0230 AM CDT Sun Apr 26 2026 Valid 281200Z - 291200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TUESDAY AFTERNOON AND EVENING IN A CORRIDOR ACROSS THE SOUTHEASTERN GREAT PLAINS INTO LOWER OHIO VALLEY... ...SUMMARY... Scattered strong to severe thunderstorm development is possible Tuesday afternoon and evening in a corridor from the southeastern Great Plains into lower Ohio Valley. ...Discussion... Models indicate that an evolving broad cyclone will continue to deepen while migrating northeast of the upper Great Lakes region through the southeastern Hudson Bay vicinity Tuesday through Tuesday night. In its wake, it appears that a cold front will gradually advance eastward and southward through the Ohio Valley/Mid South and southern Great Plains. This may be slowed a bit as a trailing short wave perturbation supports a developing frontal wave, as it migrates through the base of broad, larger-scale interior North American troughing, to the north of a prominent subtropical high maintaining a notable influence as far north as the southern Great Plains through Gulf Coast states. There remains notable spread within the latest model output concerning the frontal progression and where the stronger forcing for ascent develops with the evolving wave. A conglomerate convective outflow boundary may also initially precede the front across the northern Gulf Coast states through Ark-La-Tex at the outset of the period. Even so, guidance suggests that a corridor of moderate to strong potential instability will again develop along the frontal zone across parts of the southern Great Plains into Mid South, and perhaps northeastward through portions of the Ohio Valley. Aided by favorable vertical shear near the southern fringe of the westerlies, this environment could become conducive to the development of supercell structures and organizing clusters with potential to produce damaging wind gusts, large hail and perhaps a risk for tornadoes. ..Kerr.. 04/26/2026 $$ = = = 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]