Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Mon Jun 03 2024 08:33:47 ACUS48 KWNS 030833 SWOD48 SPC AC 030832 Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0332 AM CDT Mon Jun 03 2024 Valid 061200Z - 111200Z ....DISCUSSION... Medium-range guidance continues to vary on the strength and evolution of the mid-latitude cyclone forecast to be over the Upper Great Lakes/southern Ontario vicinity early D4/Thursday. Even with this variance, the overall pattern remains fairly similar with the cyclone drifting gradually eastward/southeastward into the Northeast from D4/Thursday through D6/Saturday. At the same time, upper ridging is forecast to build from the southern Plains into the Pacific Northwest/British Columbia. A belt of strong northwesterlies is anticipated between these two features, from the Canadian Prairies across the Upper Midwest and OH Valley and into the Mid-Atlantic, through the weekend. The greater low-level moisture and buoyancy will likely remain confined to the southern Plains and Southeast on D4/Thursday and D5/Friday, before some moisture advection takes it back into the central Plains on D6/Saturday and D7/Sunday. No synoptic features are forecast to interact with this moisture across the southern/central Plains, but daily afternoon thunderstorm development along the lee trough across central/southern High Plains appears possible. However, predictability of coverage and severity is low at this forecast range. ...Mosier.. 06/03/2024 = = = 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) .