BBS: TELESC.NET.BR Assunto: DAY3SVR: Nws Storm Prediction Center Norman Ok De: COD Weather Processor Data: Thu, 28 May 2026 07:31:58 +0000 ----------------------------------------------------------- ACUS03 KWNS 280731 SWODY3 SPC AC 280730 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0230 AM CDT Thu May 28 2026 Valid 301200Z - 311200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER WESTERN NEBRASKA AND SOUTH DAKOTA... ...SUMMARY... Scattered storms, some possibly severe with wind and hail potential, are expected over parts of the Plains states on Saturday. The most concentrated area is forecast to be over western Nebraska and South Dakota. ...Northern High Plains... An upper low/shortwave trough will eject in negative tilt fashion across the northern Rockies on Saturday, with a lobe of stronger winds aloft across the area. Midlevel temperatures will be cool, with -12 or colder at 500 mb. This, combined with an influx of low 60s F dewpoints into western SD and NE, will support moderate instability. Further, surface winds will be backed to southeasterly, as will winds at 850 mb, helping to transport moisture westward and enhance storm relative inflow. Storms appear likely to form during the late afternoon within the surface trough, with large hail and perhaps brief tornado potential. Then, storms will likely merge into a forward-propagating cluster or MCS, with damaging winds into the evening. ...KS/OK/TX... At least isolated severe activity appears possible Saturday afternoon, including hail and damaging wind threat, as a moist and unstable air mass develops. While the main upper wave will be well to the north, cool midlevel temperatures will remain over the region, which when combined with upper 60s F dewpoints and daytime heating, will result in 2000-3000 J/kg MUCAPE. A surface trough and dryline are forecast to extend from central KS into western OK and northwest TX, and surface convergence may be sufficient to support sporadic cell development by late afternoon. Forecast soundings indicate veering but weak shear profiles, however, slow-moving supercells may occur with large hail and locally severe gusts. ..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]