Subj : DAY3SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Mon Apr 10 2023 07:24:48 ACUS03 KWNS 100724 SWODY3 SPC AC 100723 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0223 AM CDT Mon Apr 10 2023 Valid 121200Z - 131200Z ....NO SEVERE THUNDERSTORM AREAS FORECAST... ....SUMMARY... Isolated thunderstorms are possible over portions of Nebraska and southern South Dakota, the southern and central Rockies, and the Gulf Coast/Florida on Wednesday. Severe thunderstorms are not expected. ....Synopsis... An upper low will likely be over the southern TX/LA vicinity early Wednesday morning, with only modest eastward movement anticipated throughout the day. Surface ridging is expected to cover much of the TN Valley and Southeast at the beginning of the period, with some gradual eastward/northeastward progress anticipated throughout the period. This overall pattern will result in largely continental low-level trajectories, confining the low-level moisture to the immediate Gulf Coast and FL, where some isolated thunderstorms are possible throughout the day. Farther west, the surface pressure gradient will increase across the Plains, as lee troughing deepens amid persistent southwesterly flow aloft, and surface ridging remain in place over the TN Valley and Southeast. Even so, the previously mentioned continental trajectories over the Gulf will limit moisture return until early Thursday morning. Some isolated lightning flashes are possible over the southern and central Rockies, where strong diurnal heating, modest mid-level moisture, and increasing large-scale ascent could support a few thunderstorms. A few thunderstorms are also possible during the late afternoon and evening over the northeast CO/southern NE Panhandle vicinity, near a surface low expected along the western portion of stationary boundary extending into southern MN. Afternoon storms here will be supported by strong heating, increasing mid-level moisture, and convergence along the boundary. A few elevated storms are possible during the evening and overnight, amid strong warm-air advection amid robust low-level jet. In each case, limited buoyancy should mitigate the overall severe potential. ...Mosier.. 04/10/2023 $$ = = = 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) .