Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Wed Oct 04 2023 08:14:14 ACUS48 KWNS 040814 SWOD48 SPC AC 040812 Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0312 AM CDT Wed Oct 04 2023 Valid 071200Z - 121200Z ....DISCUSSION... Severe-thunderstorm potential appears limited through most of the extended range. A deep longwave trough is forecast to evolve into a large mid/upper-level cyclone this weekend, centered near the upper Great Lakes region into Ontario. Generally dry and stable conditions are expected into early next week east of the Rockies, where an expansive surface ridge will persist in the wake of a cold front. Spread amongst extended-range guidance begins to increase by the middle of next week. In general, some increase in low-level moisture is possible into portions of the southern Plains by Tuesday/Wednesday, as an upper-level trough becomes reestablished over parts of the western CONUS and induces lee troughing across the High Plains. Predictability is low regarding whether any stronger shortwaves will emerge across the Plains through midweek as moisture begins to increase, though guidance generally suggests rather limited severe-thunderstorm potential through Wednesday. ...Dean.. 10/04/2023 = = = 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) .