Full Notification

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WWUS86 KLOX 122304
SPSLOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
404 PM PDT TUE MAY 12 2015

CAZ034>041-044>046-051>054-059-087-088-547>550-132315-
SAN LUIS OBISPO COUNTY CENTRAL COAST-
SANTA BARBARA COUNTY CENTRAL COAST-SANTA YNEZ VALLEY-
SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY-
SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST-
LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES-
VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS-
SANTA MONICA MOUNTAINS RECREATIONAL AREA-
SAN LUIS OBISPO COUNTY MOUNTAINS-SANTA BARBARA COUNTY MOUNTAINS-
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
ANTELOPE VALLEY-CATALINA AND SANTA BARBARA ISLANDS-
SANTA CLARITA VALLEY-LOS ANGELES COUNTY SAN FERNANDO VALLEY-
LOS ANGELES COUNTY SAN GABRIEL VALLEY-
SAN MIGUEL AND SANTA ROSA ISLANDS-SANTA CRUZ AND ANACAPA ISLANDS-
404 PM PDT TUE MAY 12 2015

...COLD SPRING STORM SYSTEM TO IMPACT SOUTHWEST CALIFORNIA
THURSDAY INTO FRIDAY...

AN UNSEASONABLY COLD STORM SYSTEM ORIGINATING FROM THE GULF OF
ALASKA WILL DIG SOUTHWARD BRINGING PERIODS OF RAIN AND MOUNTAIN
SNOW ACROSS SOUTHWEST CALIFORNIA THURSDAY INTO FRIDAY. STEADY RAIN
ASSOCIATED WITH THE COLD FRONT WILL LIKELY MOVE INTO SAN LUIS
OBISPO AND SANTA BARBARA COUNTIES ON THURSDAY MORNING...THEN SPREAD
INTO VENTURA AND LOS ANGELES COUNTIES THURSDAY AFTERNOON. BEHIND
THE COLD FRONT...A COLDER AND MORE UNSTABLE AIR MASS WILL BRING THE
THREAT OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS INTO
FRIDAY...ESPECIALLY ACROSS LOS ANGELES COUNTY. THE MAIN THREATS
WITH STORMS WILL BE BRIEF HEAVY DOWNPOURS...SMALL HAIL...DANGEROUS
LIGHTNING...AND ISOLATED WATERSPOUTS ACROSS THE COASTAL WATERS.

MANY PORTIONS OF THE FORECAST AREA WILL HAVE THE POTENTIAL TO
RECEIVE BETWEEN ONE QUARTER AND ONE INCH OF RAIN...WITH THE
HIGHEST AMOUNTS LIKELY FOCUSED ACROSS LOS ANGELES COUNTY. LOCAL
RAINFALL TOTALS UP TO 1.50 INCHES WILL BE POSSIBLE ACROSS THE SAN
GABRIEL MOUNTAINS AND FOOTHILLS AS WELL AS AREAS NEAR THUNDERSTORMS.
SINCE THERE IS A SLIGHT CHANCE OF THUNDERSTORMS WITH THIS
SYSTEM...THERE IS THE POSSIBILITY OF BRIEF HEAVY DOWNPOURS CAPABLE
OF PRODUCING ISOLATED RAINFALL RATES AS HIGH AS ONE HALF INCH PER
HOUR. IF A THUNDERSTORM HAPPENED TO DEVELOP OVER A RECENT BURN
AREA...THERE WOULD BE THE POTENTIAL FOR SOME MINOR MUD AND DEBRIS
FLOWS. SNOW LEVELS WILL GENERALLY RANGE BETWEEN 5000 AND 6000 FEET
WITH LOCALLY LOWER SNOW LEVELS IN HEAVIER SHOWERS. THE VENTURA
COUNTY MOUNTAINS CAN EXPECT 2 TO 4 INCHES OF SNOW WHILE THE SAN
GABRIEL MOUNTAINS COULD SEE 4 TO 8 INCHES OF NEW SNOW. AS A
RESULT...A WINTER WEATHER ADVISORY WILL LIKELY BE NEEDED AS WE
DRAW CLOSER TO THE EVENT. IN ADDITION...GUSTY SOUTHWEST WINDS UP
TO 50 MPH WILL LIKELY ACCOMPANY THIS STORM IN THE MOUNTAINS AND
THE ANTELOPE VALLEY.

RESIDENTS OF SOUTHWEST CALIFORNIA SHOULD MONITOR THE LATEST
NATIONAL WEATHER SERVICE PRODUCTS FOR THIS DEVELOPING WEATHER
SITUATION. ANYONE PLANNING TO TRAVEL TO THE LOCAL MOUNTAIN SHOULD
PREPARE FOR THE POSSIBILITY OF SNOW AND GUSTY WINDS.