Full Notification

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
739 PM PST SUN NOV 30 2014

CAZ034>041-044>046-051>054-059-087-088-547-548-020400-
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 ISLAND-SANTA CLARITA VALLEY-LOS ANGELES COUNTY SAN FERNANDO VALLEY-LOS ANGELES COUNTY SAN GABRIEL VALLEY-
739 PM PST SUN NOV 30 2014

...A PACIFIC STORM SYSTEM MAY BRING SIGNIFICANT RAIN TO MUCH OF SOUTHWESTERN CALIFORNIA TUESDAY INTO WEDNESDAY...

A STRONG UPPER LEVEL LOW PRESSURE SYSTEM WILL CONTINUE TO DEVELOP INTHE EASTERN PACIFIC...THEN SLOWLY APPROACH THE WEST COAST THROUGH TUESDAY. THIS STORM HAS THE POTENTIAL TO BRING A PERIOD OF HEAVY RAINFALL TO MUCH OF SOUTHWEST CALIFORNIA TUESDAY INTO TUESDAY EVENING.

THERE IS A CHANCE THAT RAIN COULD DEVELOP ACROSS MUCH OF THE REGION LATE MONDAY NIGHT. THE STRONG UPPER LOW WILL BEGIN TO APPROACH THE WEST COAST ON TUESDAY. STRENGTHENING SOUTH TO SOUTHWESTERLY FLOW ALOFT AHEAD OF THIS STORM IS EXPECTED TO TAP INTO A RICH SUBTROPICAL MOISTURE SOURCE WELL OFF THE COAST OF MEXICO...INCREASING THE POTENTIAL FOR HEAVY RAINFALL.

WHILE THERE IS STILL SOME UNCERTAINTY WITH RESPECT TO THE EXACT TIMING OF THE HEAVIEST RAIN AND THE ULTIMATE RAINFALL TOTALS...THE POTENTIAL EXISTS FOR 1 TO 2 INCHES OF RAIN IN COASTAL AND VALLEY AREAS...WITH 2 TO 5 INCHES IN THE FOOTHILLS AND MOUNTAINS. THE ONE MAIN CONCERN AT THIS POINT IS THE AMOUNT OF LOW LEVEL EASTERLY FLOW THAT COULD DEVELOP ON TUESDAY WHICH COULD HELP TO
DIMINISH THE EARLIER RAINFALL ESTIMATES. IT APPEARS THAT RAIN WILL BECOME MOST WIDESPREAD AND HEAVIEST ON TUESDAY...LINGERING ACROSS LOS ANGELES COUNTY ON TUESDAY EVENING.

THERE IS THE POTENTIAL OF A 2 TO 3 HOUR BURST OF HEAVY RAINFALL WITH THIS SYSTEM ON TUESDAY...WHERE RAINFALL RATES AROUND ONE HALF INCH PER HOUR WILL BE POSSIBLE. RAINFALL RATES OF THIS INTENSITY COULD BRING THE THREAT OF FLASH FLOODING AND MUD AND DEBRIS FLOWS TO LOCATIONS
IN AND AROUND RECENT BURN AREAS. AS WE DRAW CLOSER TO THE EVENT...A FLASH FLOOD WATCH MAY NEED TO BE ISSUED FOR THE RECENT BURN AREAS. ADDITIONAL ROCK AND MUDSLIDES WILL ALSO BE POSSIBLE IN NON-BURN AREAS...ESPECIALLY ALONG HIGHWAY 1 AND CANYON ROADS IN THE SANTA MONICA MOUNTAINS.

OTHER POTENTIAL IMPACTS FROM THIS STORM SYSTEM INCLUDE GUSTY SOUTHEAST TO SOUTH WINDS ON TUESDAY...ESPECIALLY ACROSS HIGHER TERRAIN WHERE GUSTS OVER 50 MPH WILL BE POSSIBLE. THE SUBTROPICAL NATURE OF THIS MOISTURE WILL LIKELY KEEP SNOW LEVELS VERY HIGH...GENERALLY ABOVE 7500 FEET THROUGH AT LEAST TUESDAY NIGHT. SCATTERED SHOWERS BEHIND THE MAIN FRONT WILL LIKELY LINGER INTO WEDNESDAY OR WEDNESDAY NIGHT...AND SNOW LEVELS WOULD LOWER SOME AT THAT TIME.

RESIDENTS ACROSS THE SOUTHLAND...ESPECIALLY THOSE WHO LIVE NEAR THE RECENT BURN AREAS...SUCH AS THE COLBY AND SPRINGS BURN AREAS SHOULD MONITOR THE LATEST NATIONAL WEATHER SERVICE FORECASTS AND STATEMENTS ABOUT THIS POTENTIALLY SIGNIFICANT STORM SYSTEM.

LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL MEDIA OUTLET FOR THE LATEST UPDATES ON THIS STORM SYSTEM.