Subj : DAY2SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Sun Oct 15 2023 16:48:57 ACUS02 KWNS 151648 SWODY2 SPC AC 151647 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1147 AM CDT Sun Oct 15 2023 Valid 161200Z - 171200Z ....NO SEVERE THUNDERSTORM AREAS FORECAST... ....SUMMARY... Severe thunderstorms are not expected on Monday. ....Pacific Northwest... A negatively tilted mid/upper-level shortwave trough is forecast to move inland across the Pacific Northwest and British Columbia on Monday. A surface low is forecast to move northward near the BC coast, with secondary cyclogenesis expected Monday evening in the lee of the Canadian Rockies. A cold front will begin to move inland across the Pacific Northwest Monday morning, and move into parts of the interior Northwest and northern Rockies Monday evening into Tuesday morning. A frontal precipitation band will move through western WA/OR Monday morning, which may contain some weak embedded convective elements. Somewhat more robust convection will be possible Monday afternoon/evening within the post-frontal regime, in closer proximity to the approaching shortwave trough. Steepening low/midlevel lapse rates will support at least isolated thunderstorm potential across western WA and northwest OR. Rather strong low/midlevel flow and cool temperatures aloft may support gusty winds and small hail with the strongest storms, but very weak buoyancy and a tendency for convection to be rather shallow/low-topped is expected to limit severe potential. ...Dean.. 10/15/2023 $$ = = = 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 3.14-Linux * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105) .