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-
829 PM PST WED FEB 16 2011
...SLOW MOVING AND POTENTIALLY STRONG STORM SYSTEM EXPECTED THURSDAY NIGHT
THROUGH SATURDAY ACROSS SOUTHWEST CALIFORNIA...
A COOL AND MOIST AIR MASS WILL CONTINUE TO BRING A CHANCE OF SHOWERS
TO PORTIONS OF THE SOUTHLAND THROUGH THURSDAY...ESPECIALLY IN THE MOUNTAINS.
SNOW LEVELS ARE EXPECTED TO LOWER TO BETWEEN 3000 AND 4000 FEET OVERNIGHT
INTO THURSDAY...WHICH COULD BRING LIGHT ACCUMULATIONS OF SNOW TO PORTIONS
OF INTERSTATE 5 NEAR THE GRAPEVINE...AS WELL AS INTERSTATE 14 THROUGH
SOLEDAD CANYON.
OUR NEXT STORM SYSTEM IS EXPECTED TO AFFECT THE REGION THURSDAY NIGHT
THROUGH SATURDAY. THIS SYSTEM IS EXPECTED TO BE SLOW MOVING AND HAS
THE POTENTIAL TO BRING PERIODS OF HEAVY RAIN...SIGNIFICANT MOUNTAIN
SNOW...AND STRONG WINDS. THE STORM IS EXPECTED TO FIRST IMPACT SAN LUIS
OBISPO COUNTY THURSDAY NIGHT INTO FRIDAY MORNING WITH AN INITIAL BAND OF
HEAVY RAIN AND STRONG WINDS. THE MAIN FRONTAL BAND WITH HEAVY RAIN AND
STRONG SOUTHERLY WINDS IS EXPECTED TO GRADUALLY SHIFT EASTWARD LATER
FRIDAY INTO FRIDAY NIGHT. WHILE THERE IS STILL SOME UNCERTAINTY IN THE
TIMING OF THIS STORM SYSTEM ADVANCING EASTWARD...IT APPEARS THAT THE
HEAVIEST RAINFALL ASSOCIATED WITH THE FRONT WILL BE BE LATE FRIDAY
AFTERNOON INTO FRIDAY NIGHT FOR AREAS SOUTH OF POINT CONCEPTION.
THERE WILL ALSO BE A THREAT OF THUNDERSTORMS FRIDAY AND SATURDAY...
IN ASSOCIATION WITH THE VIGOROUS COLD FRONT...AS WELL AS THE COLD
AND UNSTABLE AIR MASS FOLLOWING THE FRONT. SOME OF THESE THUNDERSTORMS
COULD BE STRONG WITH THE POTENTIAL FOR HEAVY DOWNPOURS...HAIL...STRONG
WINDS...AND DANGEROUS CLOUD TO GROUND LIGHTNING. CONDITIONS WILL ALSO
BE FAVORABLE FOR WATERSPOUTS AND FUNNEL CLOUDS...AND CANNOT RULE OUT
THE POSSIBILITY OF ISOLATED SMALL TORNADOS.
PRELIMINARY RAINFALL ESTIMATES WITH THIS STORM ARE 1 TO 3 INCHES ACROSS
COASTAL AND VALLEY AREAS...WITH 3 TO 6 INCHES POSSIBLE IN THE FOOTHILLS
AND MOUNTAINS. DUE TO THE STRONG SOUTHERLY OROGRAPHIC FLOW EXPECTED
WITH THIS STORM...THE HIGHEST RAINFALL TOTALS ARE EXPECTED ON SOUTH
FACING SLOPES. DUE THE CONVECTIVE NATURE OF THE PRECIPITATION...RAINFALL
RATES COULD LOCALLY EXCEED ONE INCH PER HOUR WITH THIS SYSTEM...ESPECIALLY
NEAR THUNDERSTORMS AND ACROSS SOUTH FACING SLOPES. AS A RESULT...THERE MAY
BE FLASH FLOOD AND DEBRIS FLOW CONCERNS IN AND AROUND RECENT BURN
AREAS...THAT MAY REQUIRE FLASH FLOOD WATCHES AS WE DRAW CLOSER TO THE EVENT.
THE STRONG SOUTHERLY FLOW WILL INITIALLY KEEP SNOW LEVELS BETWEEN 4500
AND 5500 FEET ON FRIDAY...BUT ARE EXPECTED TO LOWER TO AS LOW AS 3000
FEET ON SATURDAY BEHIND THE FRONT. THIS SYSTEM HAS THE POTENTIAL OF
BEING A POWERFUL WINTER STORM FOR THE HIGHER ELEVATIONS...WITH
THE POTENTIAL FOR SIGNIFICANT SNOWFALL ACCUMULATIONS AT THE HIGHER
ELEVATIONS AND STRONG WINDS GUSTING TO 70 MPH DURING THE PEAK OF THE
EVENT. AS A RESULT...A WINTER STORM WATCH WILL LIKELY BE REQUIRED
FOR THE LOCAL MOUNTAINS. AS THE SNOW LEVELS LOWER...THERE WILL ALSO BE THE
POTENTIAL FOR ACCUMULATING SNOWFALL ACROSS PORTIONS OF INTERSTATE 5 NEAR
THE GRAPEVINE...AND POSSIBLY PORTIONS OF INTERSTATE 14 THROUGH SOLEDAD
CANYONS...AND THE ADJACENT FOOTHILLS OF THE ANTELOPE VALLEY. IN ADDITION TO
THE MOUNTAINS...GUSTY SOUTHERLY WINDS ARE ALSO EXPECTED ACROSS MUCH OF THE
LOWER ELEVATIONS AS WELL...WITH THE POTENTIAL FOR DAMAGING WIND GUSTS
ACROSS PORTIONS OF SAN LUIS OBISPO AND SANTA BARBARA COUNTIES.
WHILE THERE ARE STILL SOME UNCERTAINTIES IN THE EVOLUTION OF THIS UPCOMING
STORM SYSTEM...THERE IS CERTAINLY THE POTENTIAL FOR MAJOR IMPACTS ACROSS
THE SOUTHLAND. RESIDENTS ARE URGED TO STAY TUNED TO THE LATEST NATIONAL
WEATHER SERVICE FORECASTS AND STATEMENTS ON THIS DEVELOPING WEATHER SITUATION.
ANYONE PLANNING TO TRAVEL INTO THE MOUNTAINS THIS WEEKEND SHOULD BE ESPECIALLY
PREPARED FOR THE POSSIBILITY OF WINTER STORM CONDITIONS.
$$
GOMBERG
Source: http://www.wrh.noaa.gov/total_forecast/getprod.php?wfo=lox&sid=LOX&pil=SPS
--
Check out http://groups.yahoo.com/group/californiadisasters/
Read our blog at http://eclecticarcania.blogspot.com/
Visit me on Facebook at http://www.facebook.com/derkimster
__._,_.___
No comments:
Post a Comment