Severe Thunderstorm Warning 4, NWS San Diego, CA

718 
WWUS56 KSGX 210137
SVSSGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
537 PM PST WED JAN 20 2010

CAC073-210200-
/O.CON.KSGX.SV.W.0004.000000T0000Z-100121T0200Z/
SAN DIEGO CA-
537 PM PST WED JAN 20 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM PST
FOR WEST CENTRAL SAN DIEGO COUNTY...

AT 533 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM VISTA TO CARLSBAD TO SOLANA BEACH...MOVING EAST AT 25 
MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  ESCONDIDO AND RANCHO BERNARDO BY 545 PM PST.

LAT...LON 3295 11728 3305 11732 3310 11734 3320 11740
      3330 11739 3329 11707 3288 11704 3287 11727
TIME...MOT...LOC 0134Z 287DEG 37KT 3315 11719 3299 11721
          3283 11740

$$

SCV

861 
WWUS56 KSGX 210158
SVSSGX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
558 PM PST WED JAN 20 2010

CAC073-210201-
/O.EXP.KSGX.SV.W.0004.000000T0000Z-100121T0200Z/
SAN DIEGO CA-
558 PM PST WED JAN 20 2010

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL SAN DIEGO COUNTY
WILL EXPIRE AT 600 PM PST...

AT 551 PM...A SQUALL LINE LOCATED ALONG A LINE FROM ESCONDIDO...TO 
RANCHO BERNARDO...TO SOLANA BEACH...TO LA JOLLA...TO 10 MILES WEST 
OF SAN DIEGO CONTINUED TO PUSH EASTWARD THROUGH SAN DIEGO COUNTY 
WITH VERY HEAVY RAIN AND SMALL HAIL. HOWEVER...WIND GUSTS TO 60 MPH 
ARE NO LONGER EXPECTED WITH THIS LINE AND THE SEVERE THUNDERSTORM 
WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3295 11728 3305 11732 3310 11734 3320 11740
      3330 11739 3329 11707 3288 11704 3287 11727
TIME...MOT...LOC 0151Z 287DEG 37KT 3310 11699 3294 11701
          3278 11720

$$

SCV

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
230 PM PST WED JAN 20 2010

.SYNOPSIS...ANOTHER PAIR OF PACIFIC STORMS WILL BRING PERIODS OF
STRONG GUSTY WINDS...HEAVY PRECIPITATION...AND HIGH SURF THROUGH
FRIDAY. DRY AND WARMER FOR LATE SATURDAY THROUGH MONDAY UNDER HIGH
PRESSURE. CHANCE OF SHOWERS NEXT TUESDAY.

&&

.DISCUSSION...FOR SOUTHWEST CALIFORNIA INCLUDING SAN DIEGO...
ORANGE...SOUTHWEST SAN BERNARDINO AND WEST RIVERSIDE COUNTIES.

.SHORT TERM (REMAINDER OF TODAY THROUGH SATURDAY)...ANOTHER VIGOROUS
FRONTAL SYSTEM WAS APPROACHING FROM THE NW EARLY THIS AFTERNOON.
AIRCRAFT SOUNDINGS SHOWED VERY STRONG SW TO W WINDS ALOFT.

LIGHT WARM SECTOR PRECIP WILL SPREAD SW EARLY THIS AFTERNOON.
HEAVIER SHOWERS WILL DEVELOP WITH THE FRONT WHICH WILL MOVE INTO
ORANGE COUNTY AND BY 2 PM AND THEN MOVE SW INTO SAN DIEGO COUNTY.

RAINFALL SHOULD RANGE FROM ABOUT 1 TO 2 INCHES NEAR THE COAST AND 2
TO 4 INCHES ON THE COASTAL MOUNTAIN SLOPES WITH LOCAL LARGER AMOUNTS
ON THE SW FACING SLOPES OF THE SAN BERNARDINO COUNTY MOUNTAINS.
THERE COULD BE ABOUT 1/2 TO 1 INCH IN THE DESERTS. THUNDERSTORMS
WILL ACCOMPANY THE FRONT WITH ENOUGH INSTABILITY AND SHEAR FOR
ISOLATED WATERSPOUTS AND TORNADOES. THE SNOW LEVEL WILL BE IN THE
5500 TO 6000 FOOT RANGE TODAY WITH HEAVY SNOW AT THE HIGHER
ELEVATIONS.

SHOWERS WILL TAPER OFF LATE THIS AFTERNOON AND TONIGHT BUT ANOTHER
SYSTEM WILL BEGIN TO IMPACT SRN CA THURSDAY. SIMILAR RAINFALL TOTALS
ARE EXPECTED WITH THE THURSDAY SYSTEM. HOWEVER...IT WILL BE COLDER
WITH MORE INSTABILITY SHOWERS. LARGER RAINFALL RATES ARE LIKELY
THURSDAY AFTERNOON AND EVENING WHICH WILL CAUSE AN INCREASED CHANCE
OF FLASH FLOODING. THERE WILL ONCE AGAIN BE THUNDERSTORMS WITH THE
POSSIBILITY OF WATERSPOUTS AND TORNADOES. THE COLDER AIR ALOFT WILL
ALSO RESULT IN A BETTER CHANCE OF HAIL.

STRONG GUSTY AND POTENTIALLY DAMAGING WINDS WILL ACCOMPANY EACH OF
THESE SYSTEMS. THE DYNAMIC WILL WEAKEN THURSDAY NIGHT AND FRIDAY BUT
VERY MOIST SW TO W FLOW WILL CONTINUE TO CAUSE PERIODS OF
SHOWERS...HEAVY AT TIMES...THROUGH FRIDAY WITH A CHANCE OF
THUNDERSTORMS. THE SNOW LEVEL WILL LOWER FROM ABOUT 5500 FT THURSDAY
AFTERNOON TO NEAR 4000 FT FRIDAY NIGHT.

A FEW SHOWERS COULD LINGER INTO SATURDAY MORNING BUT DRIER NW FLOW
WILL DEVELOP AND BRING AN END TO THE SHOWERS BY SATURDAY AFTERNOON.
WARMER SATURDAY.

&&

.LONG TERM (SUNDAY THROUGH TUESDAY)...FAIR AND WARMER SUNDAY AND
MONDAY UNDER HIGH PRESSURE...ALTHOUGH HIGH CLOUDINESS WILL INCREASE
ON MONDAY. ANOTHER FAST MOVING PAC STORM WILL BRING MORE CLOUDS AND
COOLING WITH A CHANCE OF SHOWERS TUESDAY.

&&

.AVIATION...
202030Z...STRONG COLD FRONT CROSSING SOUTHERN CALIFORNIA BIGHT WAS
JUST APPROACHING SANTA CATALINA AND SAN CLEMENTE ISLANDS AT THIS
TIME. MOVEMENT APPEAR TO BE SOUTHEAST 35 KT. EXTRAPOLATION HAS IT
PUSHING ACROSS KSNA AROUND 2200 UTC...ACROSS KONT/KCRQ AROUND 2300
UTC...AND KSAN AROUND 21/0000 UTC. MERGING OVERCAST CLOUD LAYERS
FL010-FL250...CIGS/VIS AOB 500 FT AGL 1SM IN +RA...MOUNTAINS
OBSCURED...FREEZING LEVEL NEAR FL065 AHEAD OF FRONT. GOOD CHANCE OF
THUNDERSTORMS WITH HAIL AND GUSTS 55 KNOTS AT FROPA TO A FEW HOURS
FOLLOWING. WILL BE ISSUING AN AIRPORT WEATHER WARNING FOR KSAN
SHORTLY VALID 21/01-21/04Z. THUNDERSTORM THREAT ENDING AROUND
21/0600 UTC. BETWEEN 21/0600-21/1600 UTC WARM FRONT MOVES NORTHEAST
ACROSS SW CALIFORNIA. CLOUDS BECOMING SCATTERED BELOW FL070..BUT
INCREASING TO OVERCAST BETWEEN FL100-FL250. BETWEEN 21/1800-22/0000
UTC MERGING OVERCAST LAYERS DEVELOPING AGAIN FROM FL020 THROUGH
FL300 AS YET ANOTHER STRONG COLD FRONT APPROACHES SW CALIFORNIA.

&&

.MARINE...
202050Z...GALE WARNING IN EFFECT THROUGH 0200 PST THURSDAY. COULD
HAVE GUSTS NEAR 50 KNOTS LATE AFTERNOON AND EVENING HOURS AS COLD
FRONT MOVES ACROSS INNER COASTAL WATERS. COASTAL FLOOD ADVISORY IN
EFFECT FOR TONIGHT. COASTAL FLOOD WATCH EARLY THURSDAY MORNING INTO
FRIDAY WHEN STRONGER FRONT. HEAVIER RAINFALL AMOUNTS AND SWELL
DIRECTION BECOMING MORE WEST TO SOUTHWEST ALLOWING HIGHER SURF
RUNUP...COMBINE TO CREATE GREATER POTENTIAL FOR COASTAL DAMMING OF
RAINFALL RUNOFF. HIGH SURF ADVISORY STILL IN EFFECT THROUGH SUNDAY
MORNING. SMALL CRAFT ADVISORIES FOR HAZARDOUS SEAS WILL CONTINUE
INTO SUNDAY MORNING ALSO AFTER THE GALE WARNING IS LOWERED.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...

CA...WIND ADVISORY UNTIL 6 PM PST FRIDAY FOR ORANGE COUNTY
     COASTAL AREAS-SAN BERNARDINO AND RIVERSIDE COUNTY
     VALLEYS-THE INLAND EMPIRE-SAN DIEGO COUNTY COASTAL AREAS-SAN
     DIEGO COUNTY VALLEYS-SANTA ANA MOUNTAINS AND FOOTHILLS.

     COASTAL FLOOD WATCH FROM LATE TONIGHT THROUGH FRIDAY AFTERNOON
     FOR ORANGE COUNTY COASTAL AREAS-SAN DIEGO COUNTY COASTAL
     AREAS.

     FLASH FLOOD WATCH UNTIL 10 PM PST THIS EVENING FOR ORANGE
     COUNTY COASTAL AREAS-SAN BERNARDINO COUNTY MOUNTAINS-SAN
     BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
     SANTA ANA MOUNTAINS AND FOOTHILLS.

     COASTAL FLOOD ADVISORY UNTIL 4 AM PST THURSDAY FOR ORANGE
     COUNTY COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS.

     HIGH SURF ADVISORY UNTIL 10 AM PST SUNDAY FOR ORANGE COUNTY
     COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS.

     WINTER STORM WARNING UNTIL MIDNIGHT PST THURSDAY NIGHT FOR SAN
     BERNARDINO COUNTY MOUNTAINS.

     WIND ADVISORY UNTIL MIDNIGHT PST TONIGHT FOR APPLE AND LUCERNE
     VALLEYS-SAN BERNARDINO COUNTY MOUNTAINS.

     WINTER STORM WARNING UNTIL MIDNIGHT PST THURSDAY NIGHT FOR
     RIVERSIDE COUNTY MOUNTAINS.

     FLASH FLOOD WATCH UNTIL MIDNIGHT PST TONIGHT FOR RIVERSIDE
     COUNTY MOUNTAINS-SAN DIEGO COUNTY COASTAL AREAS-SAN DIEGO
     COUNTY MOUNTAINS-SAN DIEGO COUNTY VALLEYS.

     WIND ADVISORY UNTIL MIDNIGHT PST TONIGHT FOR RIVERSIDE COUNTY
     MOUNTAINS-SAN DIEGO COUNTY MOUNTAINS.

PZ...SMALL CRAFT ADVISORY FROM 2 AM THURSDAY TO 4 AM PST SUNDAY FOR
     COASTAL WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER
     AND OUT 30 NM-WATERS FROM SAN MATEO POINT TO THE MEXICAN
     BORDER EXTENDING 30 TO 60 NM OUT INCLUDING SAN CLEMENTE
     ISLAND.

     GALE WARNING UNTIL 2 AM PST THURSDAY FOR COASTAL WATERS FROM
     SAN MATEO POINT TO THE MEXICAN BORDER AND OUT 30 NM-WATERS
     FROM SAN MATEO POINT TO THE MEXICAN BORDER EXTENDING 30 TO 60
     NM OUT INCLUDING SAN CLEMENTE ISLAND.

&&

PUBLIC...ATKIN
AVIATION/MARINE...BALFOUR

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN DIEGO CA
245 PM PST WED JAN 20 2010

CAZ042-CAZ043-048-050-055>058-060>062-PZZ750-PZZ775-211200-
ORANGE COUNTY COASTAL AREAS-
SAN DIEGO COUNTY COASTAL AREAS-
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
SAN DIEGO COUNTY VALLEYS-SAN BERNARDINO COUNTY MOUNTAINS-
RIVERSIDE COUNTY MOUNTAINS-SANTA ANA MOUNTAINS AND FOOTHILLS-
SAN DIEGO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS-
COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS-
COASTAL WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER AND OUT
30 NM-
WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER EXTENDING 30 TO
60 NM OUT INCLUDING SAN CLEMENTE ISLAND-
245 PM PST WED JAN 20 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ALL OF EXTREME SOUTHWESTERN
CALIFORNIA.

.DAY ONE...TONIGHT

HEAVY RAIN...STRONG GUSTY WINDS...AND SNOW AT THE HIGHER ELEVATIONS
THROUGH THIS EVENING. LOCAL FLOODING IS LIKELY. THERE WILL ALSO BE
ISOLATED THUNDERSTORMS WITH THE POTENTIAL TO PRODUCE TORNADOES.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

PERIODS OF HEAVY RAIN...STRONG GUSTY WINDS...AND SNOW IN THE
MOUNTAINS ABOVE 4500 FEET. LOCAL FLOODING IS LIKELY. THERE WILL ALSO
BE ISOLATED THUNDERSTORMS WITH THE POTENTIAL TO PRODUCE TORNADOES.

SHOWERS WILL CONTINUE FRIDAY. SNOW LEVELS WILL LOWER TO 4000 FEET.

HIGH SURF WITH A CHANCE OF COASTAL FLOODING WILL LINGER INTO SUNDAY
MORNING.

.SPOTTER INFORMATION STATEMENT...SKYWARN SPOTTER ACTIVATION IS
REQUESTED.

MOEDE