Subj : DAY3SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Wed Jul 09 2025 19:28:52 ACUS03 KWNS 091928 SWODY3 SPC AC 091927 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0227 PM CDT Wed Jul 09 2025 Valid 111200Z - 121200Z ....THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN CENTRAL KS TO EASTERN IA... ....SUMMARY... Scattered severe thunderstorms are possible, mainly late afternoon and evening on Friday, from central Kansas to eastern Iowa. ....Central States... Primary change this outlook is to add a level 2-SLGT risk for the most probable corridor of severe storms during the late afternoon and evening Friday. Have also expanded the longitudinal extent of the level 1-MRGL in the North-Central States and southward through the southern High Plains. A decaying MCS should be ongoing at 12Z Friday in vicinity of IA. An attendant MCV with this activity may be separate from the mid-level impulse/low-amplitude shortwave trough that is progged to emerge onto the central Great Plains Thursday night. A belt of modestly enhanced mid-level west-southwesterlies ahead of these features will support semi-organized clustering as renewed convective development occurs towards peak heating. This is anticipated from along a retreating large-scale outflow boundary southwestward towards the dryline mixing into central KS. With ample buoyancy, scattered severe storms seem possible with damaging wind as the main hazard. Isolated severe storms are possible across a much broader region. Along the synoptic cold front in northern MN to eastern SD, mid-level flow enhancement should be confined west of the front, owing to the positive-tilt orientation and compact nature of the shortwave trough across the southern Canadian Prairies into the northern Great Plains. Modest mid-level northwesterlies will support an isolated severe threat across the central/southern High Plains, with high-based convection in a limited buoyancy environment. ....East... A low-amplitude mid-level trough will move east from QC to the Canadian Maritimes. Weak height rises will occur in its wake across New England. Still, most guidance suggests isolated thunderstorms will be possible in this region, where moderate effective bulk shear could support an isolated/marginal wind/hail threat Friday afternoon. Farther south, scattered thunderstorms seem probable Friday afternoon from the DE to Savannah Valleys. Prior days of extensive convective overturning should temper PW values/storm coverage to an extent. This suggests wet microburst potential may be subdued. ...Grams.. 07/09/2025 $$ = = = 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 3.20-Linux * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105) .