Subj : DAY1SVR: Day 1 Convective To : All From : Mike Powell Date : Sat Mar 01 2025 13:13:00 ACUS01 KWNS 011624 SWODY1 SPC AC 011622 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1022 AM CST Sat Mar 01 2025 Valid 011630Z - 021200Z ....NO THUNDERSTORM AREAS FORECAST... ....SUMMARY... Thunderstorms appear unlikely through tonight. ....Synopsis and Discussion... 12Z observed soundings, recent surface observations, and satellite-based precipitable water estimates across AZ show very little moisture present this morning. A closed upper low over southern CA and northern Baja California will continue to advance eastward across the Southwest through the period. While strong large-scale ascent and cold mid-level temperatures will accompany this feature, nearly all guidance shows a lack of even weak instability until later this evening, mainly on the subsident/backside of the upper low. While showers should eventually move across parts of AZ late this evening and overnight, the potential for thunderstorms appears less than 10% due to the very limited low-level moisture and instability forecast. Elsewhere, thunderstorms are not expected across the remainder of the CONUS through tonight. ...Gleason/Thornton.. 03/01/2025 $$ --- SBBSecho 3.20-Linux * Origin: ILink: CCO - capitolcityonline.net (454:3/105) .