206 WWUS86 KSTO 231228 SPSSTO SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SACRAMENTO CA 528 AM PDT WED MAR 23 2011 CAZ015>019-064-066-067-240030- NORTHERN SACRAMENTO VALLEY-CENTRAL SACRAMENTO VALLEY- SOUTHERN SACRAMENTO VALLEY-CARQUINEZ STRAIT AND DELTA- NORTHERN SAN JOAQUIN VALLEY-CLEAR LAKE/SOUTHERN LAKE COUNTY- NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE- 528 AM PDT WED MAR 23 2011 ...THUNDERSTORMS EXPECTED THIS AFTERNOON FOR THE CENTRAL VALLEY AND SURROUNDING AREAS... AFTER THE MAIN BAND OF RAIN MOVES THROUGH THIS MORNING SOME BREAKS IN THE CLOUDS ARE EXPECTED WITH WARMER SURFACE TEMPERATURES WHICH WILL LIKELY LEAD TO THUNDERSTORM DEVELOPMENT THIS AFTERNOON. WHILE THUNDERSTORMS WILL BE POSSIBLE THROUGHOUT THE SACRAMENTO AND NORTHERN SAN JOAQUIN VALLEYS THIS AFTERNOON THE GREATEST THREAT LOOKS TO BE OVER THE WESTERN PORTION OF THE SOUTHERN SACRAMENTO...NORTHERN SAN JOAQUIN VALLEYS AND DELTA REGION. THE STORMS THIS AFTERNOON WILL MOST LIKELY CONTAIN A LOT OF SMALL HAIL MIXED WITH HEAVY RAINFALL. THIS MAY CAUSE LOCALIZED FLOODING PROBLEMS ALONG SOME ROADWAYS THIS AFTERNOON THROUGH THE EARLY EVENING HOURS. MOTORISTS DRIVING LATER THIS AFTERNOON NEED TO BE PREPARED FOR POSSIBLE RAPID CHANGES IN DRIVING CONDITIONS AND SHOULD SLOW DOWN WHEN THREATENING WEATHER APPROACHES. THE THUNDERSTORMS ARE EXPECTED TO DISSIPATE DURING THE EVENING. $$ BARUFFALDI