000 WWUS46 KLOX 221630 WSWLOX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 830 AM PST MON NOV 22 2004 ...ACCUMULATING SNOW TO CONTINUE INTO THE EARLY AFTERNOON FOR THE FOOTHILLS OF THE ANTELOPE VALLEY AND EASTERN SAN GABRIEL MOUNTAINS... .A COLD UPPER LEVEL LOW PRESSURE SYSTEM OVER SOUTHERN CALIFORNIA WILL CONTINUE TO BRING PRECIPITATION TO MUCH OF THE ANTELOPE VALLEY AND EASTERN SAN GABRIEL MOUNTAINS TODAY. AT 800 AM...WEATHER SERVICE RADARS CONTINUED TO SHOW A LARGE AREA OF PRECIPITATION MOVING SOUTHWEST ACROSS THE DESERT OF CALIFORNIA AND INTO THE EASTERN LOS ANGELES COUNTY MOUNTAINS. THE SNOW LEVEL WILL BE AROUND 3000 FEET WHICH WILL ALLOW SNOW TO ACCUMULATE IN THE FOOTHILLS OF THE ANTELOPE VALLEY. IN ADDITION...LOCALLY WINDY CONDITIONS CAN BE EXPECTED IN THE MOUNTAINS WITH GUSTS IN EXCESS OF 45 MPH IN SOME LOCATIONS. THE WIND AND SNOW WILL COMBINE TO MAKE FOR HAZARDOUS DRIVING CONDITIONS FROM FOOTHILLS OF THE ANTELOPE VALLEY INTO THE RESORTS OF THE EASTERN SAN GABRIEL MOUNTAINS...INCLUDING HIGHWAY 2. IN ADDITION...WINDY LOCATIONS CAN EXPECT WIND CHILL VALUES IN THE SINGLE DIGITS BELOW ZERO. THE HIGH ELEVATION EASTERN SAN GABRIEL MOUNTAINS HAVE ALREADY RECEIVED UP TO 24 TO 36 INCHES OF SNOW AS OF MIDNIGHT. BY THE TIME THE STORM WINDS DOWN...STORM TOTAL SNOWFALL COULD BE AS MUCH AS 4 FEET ABOVE 7000 FEET. CAZ054-222230- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- 830 AM PST MON NOV 22 2004 ...WINTER WEATHER ADVISORY EXTENDED UNTIL 230 PM... FOR SNOW AND LOCALLY STRONG NORTHEASTERLY WINDS. ADDITIONAL SNOW ACCUMULATIONS OF 2 TO 4 INCHES ARE LIKELY ACROSS MUCH OF THE EASTERN SAN GABRIELS...WITH UP TO 8 INCHES POSSIBLE ABOVE 7000 FEET... INCLUDING MOUNTAIN RESORTS ALONG AND NEAR THE ANGELES CREST HIGHWAY. AREAS OF NORTH TO EAST WINDS 20 TO 30 MPH WITH GUSTS OVER 45 MPH WILL CONTINUE THROUGH EARLY AFTERNOON. SNOW AND BLOWING SNOW WILL COMBINE TO MAKE FOR HAZARDOUS DRIVING CONDITIONS...REDUCING VISIBILITY TO NEAR ZERO AT TIMES. WIND CHILL VALUES WILL BE IN THE SINGLE DIGITS...AND BELOW ZERO IN THE WINDIEST LOCATIONS. CONDITIONS CAN DETERIORATE RAPIDLY IN WINTER WEATHER SITUATIONS. SLOW DOWN AND ALLOW EXTRA TIME TO REACH YOUR DESTINATION. PRACTICE YOUR WINTER SAFETY RULES. KEEP A FLASHLIGHT...FOOD...WATER...AND WARM CLOTHING IN YOUR CAR IN CASE OF EMERGENCY. FOR ADDITIONAL WEATHER INFORMATION...CHECK OUR WEB SITE AT HTTP://WWW.WEATHER.GOV/LOX. $$ CAZ059-222230- ANTELOPE VALLEY- 830 AM PST MON NOV 22 2004 ...SNOW ADVISORY FOR THE ANTELOPE VALLEY FOOTHILLS EXTENDED UNTIL 230 PM... ADDITIONAL SNOW ACCUMULATIONS OF 1 TO 3 INCHES ARE LIKELY THIS MORNING...MAINLY ABOVE 3000 FEET. SNOW WILL TAPER OFF AND START TO MIX WITH RAIN LATE IN THE MORNING...HOWEVER ICY CONDITIONS WILL CONTINUE THROUGH EARLY AFTERNOON. IF YOU DO NOT HAVE TO DRIVE...STAY INDOORS. ROADS ARE VERY TREACHEROUS. IF YOU HAVE TO BE ON THE ROAD...DRIVE VERY SLOWLY AND AVOID MAKING SUDDEN ACCELERATIONS AND STOPS. BE ESPECIALLY CAUTIOUS WHEN MAKING TURNS. FOR ADDITIONAL WEATHER INFORMATION...CHECK OUR WEB SITE AT HTTP://WWW.WEATHER.GOV/LOX. $$ SNOW AMOUNTS AS OF 800 AM TODAY... MOUNT BALDY......3-4 FEET AT 7800 FEET. ......2-3 FEET AT 6800 FEET. ......6 INCHES AT 5000 FEET. MT HIGH..........3 FEET. WRIGHTWOOD.......2 FEET. SNOW SUMMIT......2 FEET. LLANO............9 INCHES AT 4000 FEET. $$ WOFFORD