[IN THE CENTRAL CALIFORNIA & SIERRA NEVADA] IS CLOSED FROM 3.5 MI EAST OF SILVER LAKE TO KIRKWOOD /CARSON SPUR/ (AMADOR CO) - DUE TO HEAVY SNOW - MOTORISTS ARE ADVISED TO USE AN ALTERNATE ROUTE CHAINS OR SNOW TIRES ARE REQUIRED FROM 9 MI EAST OF PINE GROVE TO 3.6 MI WEST OF DEW DROP (AMADOR CO) CHAINS ARE REQUIRED ON ALL VEHICLES EXCEPT 4-WHEEL-DRIVE VEHICLES WITH SNOW TIRES ON ALL 4 WHEELS FROM COOK'S STATION (AMADOR CO) TO 3.5 MI EAST OF WOODFORDS (ALPINE CO) IS REOPENED FROM 2 MI EAST OF KIRKWOOD TO 5 MI WEST OF PICKETTS JCT /CARSON PASS/ (ALPINE CO) AT 0317 HRS ON 3/20/11