3-24-14 ...WET AND COOLER WEATHER TUESDAY THROUGH THE REST OF THE WEEK... * IMPACTS: WET ROADS WITH WINTRY TRAVEL INTO THE MOUNTAINS. PONDING OF WATER POSSIBLE ON ROADWAYS WITH THUNDERSTORMS ON TUESDAY AND WEDNESDAY. * RAINFALL AMOUNTS THROUGH THURSDAY: UP TO AN INCH IN THE CENTRAL VALLEY WITH UP TO AROUND 2 INCHES IN THE FOOTHILLS AND MOUNTAINS. POSSIBLE THUNDERSTORMS TUESDAY AND WEDNESDAY IN THE CENTRAL VALLEY AND FOOTHILLS MAY BRING LOCALLY HIGHER RAIN TOTALS. * SNOWFALL ACCUMULATIONS: UP TO SIX INCHES IN THE HIGHER TERRAIN OF THE COASTAL RANGE AND SHASTA COUNTY MOUNTAINS ABOVE 4500 FEET. * WINDS: SOUTHWEST WIND GUSTS TO AROUND 45 MPH OVER HIGHER MOUNTAIN TERRAIN...LOCALLY HIGHER OVER REMOTE PEAKS. * THUNDERSTORMS: A SLIGHT CHANCE OF THUNDERSTORMS WILL BE POSSIBLE DURING THE AFTERNOON AND EVENING HOURS TUESDAY AND WEDNESDAY. HEAVY RAIN, HAIL, AND AN ISOLATED TORNADO MAY ALL BE POSSIBLE THREATS. * TIMING: PRECIPITATION BEGINS OVER THE COASTAL AND WESTERN SHASTA MOUNTAINS EARLY TUESDAY MORNING SPREADING OVER MOST OF INTERIOR NORTHERN CALIFORNIA TUESDAY INTO TUESDAY NIGHT. PRECIPITATION TURNS SHOWERY WEDNESDAY AS COLDER AIR MOVES INTO THE REGION. HEAVIEST PRECIPITATION IS EXPECTED WEDNESDAY. DECREASING THREAT OF SHOWERS ON THURSDAY...ESPECIALLY IN THE VALLEY. ADDITIONAL SYSTEMS POSSIBLE LATER IN THE WEEK.