Southwest Shortrange Regional Weather Forecast
And:
From the NWS in San Diego...excerpted:
THE PERIODS OF STRONGEST WIND AND RAIN WILL BE FROM 10 AM TODAY THROUGH LATE TONIGHT...AND AGAIN THURSDAY INTO FRIDAY...AS A COUPLE OF STRONG COLD FRONTS MOVE THROUGH.
It appears that today will similar to the Tuesday event when we had several reports of waterspouts and weak tornadoes. Below is the outlook from the Storm Prediction Center: http://www.spc.noaa.gov/products/outlook/day1otlk.html
...SRN CA INTO SRN NV AND AZ...
EMBEDDED TSTMS AND LEWPS SHOULD ACCOMPANY AFOREMENTIONED FRONTAL
BAND AS IT CROSSES THE SRN CA CST THIS AFTN/EARLY EVE. GIVEN
STRENGTH OF DEEP WIND FIELD /50 KTS AT 700 MB AND 70 KTS AT
500/...THESE STRUCTURES MAY YIELD DMGG WIND. IN ADDITION
...DEPENDING HOW STRONGLY BACKED THE LOW LVL FLOW BECOMES...
TORNADOES AND WATERSPOUTS MAY OCCUR. THE DEGREE OF LOW-LVL BACKING
WILL BE GOVERNED BY THE INTENSITY OF SECONDARY CYCLOGENESIS IN THE
L.A. BASIN ...IN ADDITION TO TOPOGRAPHIC INFLUENCES. ALTHOUGH IT IS
IMPOSSIBLE TO DEFINITIVELY ASSESS THE FORMER...THE STRENGTH OF THE
WIND FIELD...FAVORABLE TIMING RELATIVE TO DIURNAL CYCLE...AND
APPARENT INTENSITY OF UPR SYSTEM IN SATELLITE IMAGERY TOGETHER
SUGGEST THAT THREAT IS SUFFICIENTLY HIGH TO WARRANT UPGRADE TO
SLIGHT RISK.
Just issued by the NWS in Oxnard:
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 729 AM PST THU JAN 21 2010 CAZ034>041-044>046-051>054-059-087-088-547-548-220600- 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-
729 AM PST THU JAN 21 2010 ...POSSIBLE SEVERE THUNDERSTORMS OVER SOUTHWEST CALIFORNIA THIS AFTERNOON... SCATTERED THUNDERSTORMS ARE EXPECTED TODAY AND SOME MAY BECOME SEVERE THIS AFTERNOON THROUGH OVERNIGHT. WINDS OF 60 MPH OR GREATER WILL BE POSSIBLE WITH THUNDERSTORMS TODAY...ALONG WITH WATERSPOUTS AND SMALL TORNADOES.
A FRONTAL SYSTEM IS CENTERED OVER THE CENTRAL COAST THIS MORNING AND WILL CONTINUE MOVING SOUTHEAST AND ACROSS THE VENTURA AND LOS ANGELES COUNTIES LATE THIS MORNING THROUGH EARLY AFTERNOON. IN THE WAKE OF THE FRONTAL SYSTEM SCATTERED THUNDERSTORMS WILL OCCUR AND MAY BECOME SEVERE THIS AFTERNOON. THERE IS A CHANCE THE THUNDERSTORMS WILL CONTINUE OVERNIGHT.
RESIDENTS IN SOUTHWESTERN CALIFORNIA ARE URGED TO STAY TUNED FOR THE LATEST INFORMATION ON THE POTENTIAL FOR SEVERE THUNDERSTORMS. LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA SOURCE...OR VISIT OUR WEBSITE AT WEATHER.GOV/LOSANGELES