WINTER STORM WATCH
((( EMERGENCY VIEWER ACTIVATION REQUESTED )))
SOUTHERN CALIFORNIA WEATHER AUTHORITY
ISSUED FEB 23, 2011 10:20p

 

ALL SOUTHERN CALIFORNIA MOUNTAINS … NORTHERN LOS ANGELES VALLEYS … THE INLAND EMPIRE … SAN DIEGO VALLEYS … SAN LUIS OBISPO AND KERN COUNTY VALLEYS …

THE SOUTHERN CALIFORNIA WEATHER AUTHORITY HAS ISSUED A WINTER STORM WATCH EFFECTIVE NOW FOR OVERNIGHT FRIDAY INTO SATURDAY …

A VERY COLD, ABNORMAL STORM SYSTEM WILL MOVE DOWN INTO THE AREA ON FRIDAY NIGHT. THIS WILL BRING ARCTIC AIR WITH IT AND INITIAL SNOW LEVELS ON THE FRONT WILL BE DOWN TO 2,500 FEET, WHICH IS A MIX AT 1,000 FEET AND 1,500 FEET FOR WET SNOW.

THIS IS JUST THE FRONTAL ZONE AND DOES NOT INCLUDE POSSIBLE CONVECTIVE ACTIVITY, WHETHER IT BE CONVECTIVE WITH NO THUNDER, OR THUNDER. BASICALLY IT MEANS THAT IS STRONG CONVECTION COMES WITH THE FRONT, WE MAY HAVE A SNOW HAZARD INTO THE UPPER VALLEY ZONES, INTO THE INLAND EMPIRE AREAS.

NOW I DID CALL LOW ELEVATION SNOW BACK ON FEBRUARY 19TH WITH THE IN THE CARDS PROJECT … BUT TO GO ALL OUT ON SNOW IN THE INLAND EMPIRE WILL TAKE A DAY OR SO TO SORT IT OUT. IT IS NOT A FOR SURE THING BUT WITH A STRONG FORCE AND DEVELOPING CONVECTION ALONG THE FRONTAL ZONE OVERNIGHT ON FRIDAY AND INTO EARLY SATURDAY MORNING … IT LOOKS POSSIBLE THEREFORE THE AREA WILL REMAIN UNDER A WINTER STORM WATCH.

SNOW LEVELS WILL BE IN THE HIGH DESERT AREAS THROUGH MOST OF THE STORM, THEREFORE SIGNIFICANT SNOW IS LIKELY THERE AND INTO THE MOUNTAINS … THE MOUNTAINS HAVE WELL OVER A FOOT OF SNOWFALL.

THIS IS A PASS LEVEL SHUTDOWN EVENT FOR THE CAJON AND GORMAN PASS …

LATER ON SATURDAY, A SECOND CONVECTIVE BAND WILL HIT THE SAN LUIS OBISPO VALLEY EAST TO THE KERN COUNTY VALLEY, INCLUDING BAKERSFIELD. IT IS POSSIBLE SNOW WILL FALL DOWN TO THE KERN COUNTY VALLEY FLOOR WITH IT.

THIS WILL UPGRADE TO A WINTER STORM WARNING IF NEEDED FOR CERTAIN AREAS …

STILL, THIS IS A VERY DANGEROUS SITUATION …

THIS IS A ((( EMERGENCY VIEWER ACTIVATION REQUESTED ))) WEATHER ALERT FROM SCWXA

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