HEAVY SNOW IS POSSIBLE THROUGH 4 AM PST FRIDAY WITH A LULLANTICIPATED UNTIL 10 PM PST FRIDAY WHEN ANOTHER WINTER STORM BRINGS ADDITIONAL HEAVY SNOW TO FOOTHILL AND MOUNTAIN LOCATIONS. TRAVEL WILL BE HAZARDOUS TO POTENTIALLY IMPOSSIBLE. * WHAT...HEAVY SNOW OCCURRING ABOVE 6000 FEET THROUGH EARLY FRIDAY MORNING. ADDITIONAL SNOW ACCUMULATIONS OF 9 TO 13 INCHES, WITH LOCALIZED AMOUNTS UP TO 21 INCHES, ARE EXPECTED. BEGINNING FRIDAY NIGHT, HEAVY SNOW IS EXPECTED AT ELEVATIONS ABOVE 5000 FEET WITH ACCUMULATIONS OF 12 TO 16 INCHES, WITH LOCALIZED AMOUNTS UP TO 24 INCHES.

* WHERE...LASSEN VOLCANIC NATIONAL PARK AND THE HIGHER ELEVATIONS OF WESTERN PLUMAS COUNTY, INTERSTATE 80 OVER DONNER PASS, HIGHWAY 50 OVER ECHO SUMMIT AND HIGHWAY 88 OVER CARSON PASS.

* WHEN...UNTIL 4 AM FRIDAY FOR THE CURRENT WINTER STORM WARNING AND 10 PM FRIDAY TO 10 PM SATURDAY FOR THE NEXT WINTER STORM WARNING.

* ADDITIONAL DETAILS...BE PREPARED FOR DIFFICULT TO POTENTIALLY IMPOSSIBLE TRAVEL WITH 2 INCH PER HOUR SNOWFALL RATES CAUSING WHITEOUT CONDITIONS. EXPECT MAJOR DELAYS AND ROAD CLOSURES.