Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Tue Oct 17 2023 07:45:42 ACUS48 KWNS 170745 SWOD48 SPC AC 170744 Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0244 AM CDT Tue Oct 17 2023 Valid 201200Z - 251200Z ....DISCUSSION... A deep upper trough is forecast to extend from the Upper Great Lakes into the eastern Gulf of Mexico D4/Friday morning. Cold front associated with this trough will extend across a similar area, with both the upper trough and cold front expected to push eastward throughout the day. Modest low-level moisture will likely be in place ahead of this cold front across portions of the Southeast, potentially supporting enough buoyancy for thunderstorms. Vertical shear should be strong enough for some severe potential, although uncertain regarding the quality of the low-level moisture and frontal timing currently limit predictability. Stable conditions are expected across the CONUS in the wake of this front during weekend, but guidance is in good agreement that another shortwave trough should develop into the Plains early next weekend. While variability exists within the guidance regarding the strength and speed of this wave, there is currently good consensus for moisture return ahead of this wave. As such, some severe potential appears possible, although large-scale predictability issue preclude much forecast confidence at this range. ...Mosier.. 10/17/2023 = = = 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) .