Flash Flood Warning 50, NWS San Diego, CA

000 
WGUS76 KSGX 232147
FFSSGX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
246 PM PDT SAT JUL 23 2005

CAC065-232245-
RIVERSIDE CA-
246 PM PDT SAT JUL 23 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 345 PM PDT FOR WEST CENTRAL
RIVERSIDE COUNTY...

AT 242 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM PRODUCING RAINFALL RATES OF ONE TO TWO 
INCHES PER HOUR.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAN 
JACINTO...HEMET...AND WINCHESTER.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 3370 11672 3387 11679 3381 11724 3351 11704

$$

PURPURA

000 
WGUS76 KSGX 232233
FFSSGX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
331 PM PDT SAT JUL 23 2005

CAC065-232245-
RIVERSIDE CA-
331 PM PDT SAT JUL 23 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 345 PM PDT FOR WEST CENTRAL
RIVERSIDE COUNTY...

AT 327 PM PDT...RAINFALL RATES IN EXCESS OF ONE INCH PER HOUR 
CONTINUE. HEMET REPORTS 1.65 INCHES OF RAIN FROM THE STORMS. 
THUNDERSTORMS CONTINUED ACROSS THE WARNED AREA.    

 

LAT...LON 3370 11672 3387 11679 3381 11724 3351 11704

$$

PURPURA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
910 AM PDT SAT JUL 23 2005

.SYNOPSIS...VERY MOIST AND UNSTABLE FLOW FROM THE SOUTHEAST WILL
BRING SHOWERS AND THUNDERSTORMS AT TIMES TO THE MOUNTAINS AND
DESERTS...MOST ABUNDANT DURING THE AFTERNOONS. SOME OF THE SHOWERS
AND THUNDERSTORMS WILL DRIFT WEST OF THE MOUNTAINS. A FLOOD WATCH
FOR FLASH FLOODING IS IN EFFECT UNTIL 8 PM TODAY FOR THE VALLEYS...
MOUNTAINS AND DESERTS. THE MOIST FLOW WILL BEGIN TO DECREASE ON
TUESDAY...SO THE THUNDERSTORMS WILL BE LESS FREQUENT. WEAK TROUGHING
OVER THE EAST PACIFIC SHOULD BRING AN END TO THE THUNDERSTORMS AND
SLIGHT COOLING LATE IN THE WEEK.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

THUNDERSTORMS THAT CAME THROUGH THE AREA EARLY THIS MORNING HAVE
ENDED FOR THE TIME BEING. SOME THUNDERSTORMS ARE SHOWING UP ON THE
WEST SHORE OF THE GULF OF CALIFORNIA SOUTHWEST OF YUMA DRIFTING TO
THE WEST NORTHWEST.

SATELLITE LOOP INDICATES THE EASTERLY WAVE ASSOCIATED WITH THE
REMAINS OF EMILY WAS OVER BAJA WORKING ITS WAY WESTWARD. EXPECT THE
AXIS OF THIS EASTERLY WAVE TO PASS THROUGH TO THE COASTAL AREAS THIS
EVENING. THE CLOUDS OVER THE EASTERN DESERTS ARE BEGINNING TO BREAK
UP WHICH SHOULD ALLOW FOR MORE SOLAR HEATING AND ALLOW CONVECTION TO
BEGIN OVER THE AREA LATER THIS AFTERNOON AND EVENING.

MADE SOME ADJUSTMENTS TO THE DEW POINT GRIDS FOR THE DESERTS FOR
TODAY...BRINGING THEM UP MORE IN LINE WITH WHAT THE METARS AND RAWS
REPORTS ARE INDICATING.

WILL EXTEND THE FLASH FLOOD WATCH TO INCLUDE THE INLAND EMPIRE AREA.
FLASH FLOOD WATCH WILL BE IN EFFECT UNTIL 8 PM THIS EVENING.

MOIST...UNSTABLE AIR MASS REMAINS OVER THE AREA THROUGH SUNDAY AND
MONDAY TO CONTINUE THE SHOWERS AND THUNDERSTORMS...WITH THE GREATEST
ACTIVITY OVER THE MOUNTAINS AND DESERTS DURING THE AFTERNOON AND
EVENING HOURS. THE EASTERLY FLOW ALOFT WILL ALLOW SOME OF THESE TO
MOVE TOWARDS THE VALLEYS AND COASTAL AREAS FROM TIME TO TIME. THE
MOISTURE SHOULD BEGIN TO DECREASE ON TUESDAY WITH A DECREASE IN THE
THUNDERSTORM ACTIVITY...MAINLY CONFINED TO THE MOUNTAINS AND DESERTS.

UPPER TROUGH DEVELOPS ALONG THE PACIFIC NORTHWEST COAST LATE IN THE
WEEK WHICH SHOULD BRING A SOUTHWEST FLOW ALOFT OVER THE AREA
SHUTTING OFF THE MOISTURE AND ENDING THE THUNDERSTORM ACTIVITY. THIS
WILL ALSO BRING SOME COOLING TO THE AREA LATE IN THE WEEK.

WILL UPDATE THE FORECAST TO INCLUDE FLASH FLOOD WATCH FOR THE INLAND
EMPIRE. NO OTHER UPDATES ARE PLANNED AT THIS TIME.

&&

.AVIATION...
AREAS OF IFR CIGS WITH BASES NEAR 800 MSL AND TOPS 1500 DEVELOPED
NEAR THE COAST THIS MORNING. THE STRATUS LAYER IS SUPPORTED BY A
COASTAL EDDY. MOST COASTAL AREAS SHOULD BECOME VFR-MVFR BY 18Z. A
BROAD AREA OF BKN-OVC MID LEVEL CLOUDS WITH BASES ABOVE 8000 MSL
WILL BE DRIFTING OVER THE REGION TODAY ASSOCIATED WITH MONSOONAL E
FLOW ALOFT. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO
REDEVELOP AGAIN THIS AFTERNOON AS THE CLOUDS THIN AND HEATING
DESTABILIZES THE ATMOSPHERE. ISOLATED HEAVY STORMS ARE POSSIBLE WITH
TOPS TO 40000 MSL...SPREADING TO THE COAST LATE IN THE DAY. THE EDDY
IS EXPECTED TO PERSIST INTO SUNDAY MORNING WITH IFR CIGS
REDEVELOPING OVER COASTAL AIRPORTS AGAIN AFTER 08Z.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH...SEE LAXFFASGX.
HAZARDOUS WEATHER OUTLOOK FOR MONSOONAL THUNDERSTORMS...SEE
LAXHWOSGX.
HIGH RIP CURRENT POTENTIAL...SEE LAXSRFSGX.

&&

PUBLIC...HORTON
AVIATION...DANDREA

HAZARDOUS WEATHER OUTLOOK...UPDATE
NATIONAL WEATHER SERVICE SAN DIEGO CA
1150 AM PDT SAT JUL 23 2005

THE REMNANTS OF HURRICANE EMILY WILL BRING THUNDERSTORMS AT TIMES
TODAY THROUGH MONDAY. THUNDERSTORMS WILL BE MOST FREQUENT OVER THE
MOUNTAINS AND DESERTS. THUNDERSTORMS WILL GRADUALLY DECREASE TUESDAY
AND WEDNESDAY AS SLIGHTLY DRIER AIR ALOFT MOVES INTO THE AREA.

CAZ042-043-048-050-055>058-060>062-232300-
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-
SAN DIEGO COUNTY MOUNTAINS-
APPLE AND LUCERNE VALLEYS-
COACHELLA VALLEY-
SAN DIEGO COUNTY DESERTS-
1150 AM PDT SAT JUL 23 2005

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

.DAY ONE... TODAY AND TONIGHT.

HIGH FLASH FLOOD POTENTIAL RATING IS IN EFFECT IN THE RIVERSIDE AND
SAN DIEGO COUNTY MOUNTAINS. MODERATE FLOOD POTENTIAL RATING IS IN
EFFECT IN THE REMAINING MOUNTAINS AND DESERTS PLUS THE SAN DIEGO
COUNTY COASTS AND VALLEYS. THUNDERSTORMS WITH FLASH FLOODING ARE
POSSIBLE. DANGEROUS LIGHTNING...SMALL HAIL AND STRONG GUSTY WINDS
WILL ALSO BE THREATS FROM THE THUNDERSTORMS THROUGHOUT THE AREA.

FLASH FLOOD WATCH UNTIL 8 PM TODAY FOR THE VALLEYS...MOUNTAINS AND
DESERTS.

.DAYS TWO THROUGH SEVEN... SUNDAY THROUGH FRIDAY.

FOR SUNDAY...HIGH FLASH FLOOD POTENTIAL RATING IS IN EFFECT IN THE
RIVERSIDE AND SAN DIEGO COUNTY MOUNTAINS. MODERATE FLOOD POTENTIAL
RATING IS IN EFFECT IN THE REMAINING MOUNTAINS AND DESERTS.
THUNDERSTORMS WITH FLASH FLOODING ARE POSSIBLE. DANGEROUS
LIGHTNING...SMALL HAIL AND STRONG GUSTY WINDS WILL ALSO BE THREATS
FROM THE THUNDERSTORMS. THUNDERSTORMS WILL BE MOST FREQUENT OVER THE
MOUNTAINS AND DESERTS BUT COULD ALSO OCCUR WEST OF THE MOUNTAINS.

MONDAY THROUGH WEDNESDAY...THUNDERSTORMS WILL CONTINUE IN MOST AREAS
MONDAY...THEN GRADUALLY DECREASE TUESDAY AND WEDNESDAY AND MOSTLY BE
RESTRICTED TO THE MOUNTAINS AND DESERTS. DANGEROUS LIGHTNING...SMALL
HAIL...STRONG GUSTY WINDS...BRIEF HEAVY RAIN AND LOCAL FLASH
FLOODING WILL BE THREATS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED TODAY AND AGAIN SUNDAY.

NOTE...THE HAZARDOUS WEATHER OUTLOOK NOW INCORPORATES THE FLASH
FLOOD POTENTIAL INDEX THAT WAS ISSUED SEPARATELY IN PREVIOUS YEARS.
THE FLASH FLOOD POTENTIAL INDEX WILL BE INCLUDED IN THE HAZARDOUS
WEATHER OUTLOOK IF IT EXCEEDS THE LOW CATEGORY IN THE FIRST TWO
DAYS. THIS PRODUCT WILL BE UPDATED DAILY AT 4 AM AND 4 PM OR AS
NEEDED THROUGH SEPTEMBER 30.

MAXWELL/HORTON