Subj : DAY1SVR: Day 1 Convective Outlook To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Sun Mar 05 2023 12:37:46 ACUS01 KWNS 051237 SWODY1 SPC AC 051236 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0636 AM CST Sun Mar 05 2023 Valid 051300Z - 061200Z ....NO SEVERE THUNDERSTORM AREAS FORECAST... ....SUMMARY... A few thunderstorms are possible today over portions of northern California and central Florida, and overnight in the Upper Midwest. --- Synopsis/Discussion --- ....CA... In mid/upper levels, a broad/complex cyclone is primarily centered off the Pacific Northwest Coast, though a secondary vorticity max is moving inland near the northwest corner of CA. Associated cyclonic flow will continue to cover most of the CONUS from the Rockies westward through the period. Though the main cyclone's core region is progged to remain just offshore, a series of vorticity lobes and low-amplitude shortwaves will move ashore over northern CA and OR, then across the Great Basin to WY, in the associated basal jet streak (90-100 kt at 500 mb, 140-160 kt at 250 mb). Cold air aloft overlying modest low/middle-level moisture will support thunder potential over pats of coastal northwestern CA and the Sacramento Valley vicinity. Lower-elevation valley temperatures in the low/mid 50s F will support 100-400 J/kg MLCAPE, but modest and veered low-level flow will limit hodographs and bulk shear. Small hail or gusty winds are possible in the most vi .