Flash Flood Warning 24, NWS San Diego, CA

885 
WGUS76 KSGX 200229
FFSSGX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
729 PM PDT TUE OCT 19 2010

CAC071-200300-
/O.CON.KSGX.FF.W.0024.000000T0000Z-101020T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
729 PM PDT TUE OCT 19 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM PDT FOR WEST
CENTRAL SAN BERNARDINO COUNTY...

AT 720 PM PDT...A BAND OF STRONG THUNDERSTORMS WITH HEAVY 
RAIN...FREQUENT LIGHTNING AND SMALL HAIL EXTENDED FROM HELENDALE 
SOUTHWARD TO PHELAN. 

FLASH FLOODING IS LIKELY FROM HELENDALE WESTWARD TO THE LOS ANGELES 
COUNTY LINE THROUGH 800 PM. THIS INCLUDES ADELANTO AND PHELAN...AS 
WELL AS SECTIONS OF HIGHWAY 395. 


LAT...LON 3477 11681 3429 11679 3430 11746 3424 11766
      3432 11764 3456 11766 3457 11767 3482 11767 
      3483 11764

$$

MOEDE

744 
WGUS76 KSGX 200256
FFSSGX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
756 PM PDT TUE OCT 19 2010

CAC071-200304-
/O.EXP.KSGX.FF.W.0024.000000T0000Z-101020T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
756 PM PDT TUE OCT 19 2010

...THE FLASH FLOOD WARNING WILL EXPIRE AT 800 PM PDT FOR WEST CENTRAL
SAN BERNARDINO COUNTY...

HEAVY RAIN NEAR EL MIRAGE WAS MOVING WESTWARD INTO LOS ANGELES 
COUNTY. THEREFORE...THE FLASH FLOOD WARNING FOR SOUTHWESTERN SAN 
BERNARDINO COUNTY WILL BE ALLOWED TO EXPIRE AT 800 PM. 

LAT...LON 3477 11681 3429 11679 3430 11746 3424 11766
      3432 11764 3456 11766 3457 11767 3482 11767
      3483 11764

$$

MOEDE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
200 PM PDT TUE OCT 19 2010

.SYNOPSIS...
CONTINUED CLOUDY AND COOL THROUGH WEDNESDAY WITH NUMEROUS SHOWERS
AND SCATTERED THUNDERSTORMS. THE SHOWERS AND THUNDERSTORMS WILL
GRADUALLY DECREASE FROM WEST TO EAST ON THURSDAY. FAIR AND WARMER
WITH NIGHT AND MORNING COASTAL LOW CLOUDS FOR THE WEEKEND THROUGH
EARLY NEXT WEEK.

&&

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

THIS AFTERNOON...NUMEROUS SHOWERS AND SCATTERED TSTMS CONTINUE OVER
THE AREA...WITH THE GREATEST ACTIVITY NOW OVER THE SOUTHERN
PORTIONS.

THE LOW PRESSURE SYSTEM SOUTH SOUTHWEST OF SAN DIEGO IS NOW MOVING
EAST AND WILL MOVE INLAND ACROSS NORTHERN BAJA TONIGHT...THEN SLOWLY
NORTHEASTWARD INTO ARIZONA THROUGH THURSDAY. THIS WILL CONTINUE TO
BRING BANDS OF SHOWERS AND SCATTERED THUNDERSTORMS THROUGH EARLY
WEDNESDAY...WITH SHOWERS GRADUALLY DECREASING FROM THE WEST THROUGH
THURSDAY. COVERAGE AND AMOUNTS ARE EXPECTED TO BE GREATEST MOSTLY
OVER THE SOUTHERN HALF OF THE FORECAST AREA...CLOSER TO THE CENTER
OF THE UPPER LEVEL PRESSURE SYSTEM AS IT TRACKS ACROSS NORTHERN BAJA
TONIGHT.

GENERAL RAINFALL AMOUNTS COULD RANGE FROM ONE QUARTER TO ONE HALF
INCH IN NORTHERN AREAS AND ONE HALF TO ONE AND ONE HALF INCH IN
SOUTHERN AREAS WITH GREATER AMOUNTS IN THE MOUNTAINS AND IN BANDS OF
HEAVIER SHOWERS AND THUNDERSTORMS. SNOW LEVELS WILL BE QUITE
HIGH...MOSTLY ABOVE 8000 FEET...BUT COULD LOWER TO AROUND 7000 FEET
FOR SOUTHERN AREAS TONIGHT INTO WEDNESDAY WHICH WOULD STILL ABOVE
THE HIGHEST MOUNTAINS FOR THESE AREAS.

FRIDAY THROUGH TUESDAY...
STRONG ZONAL FLOW WILL DEVELOP ACROSS THE PACIFIC FOR LATE THIS WEEK
INTO NEXT WEEK. FOR LATE THIS WEEK...THIS FAST ZONAL FLOW WILL SPLIT
AS IT APPROACHES THE WEST COAST WITH A WEAK SHORTWAVE IN THE
SOUTHERN BRANCH MOVING THROUGH SOUTHERN CALIFORNIA AROUND FRIDAY.
THIS WILL MOST LIKELY BE DRY WITH THE MAIN IMPACT SOME INCREASE IN
CLOUD COVER FOR FRIDAY INTO FRIDAY NIGHT. FOR SUNDAY INTO NEXT
WEEK...THIS STRONG PACIFIC JET WILL STAY TO OUR NORTH. HIGH PRESSURE
OVER THE PACIFIC ALONG 30N WILL EXTEND INTO SOUTHERN CALIFORNIA.
THIS WILL BRING FAIR AND WARMER WEATHER FOR SATURDAY THROUGH EARLY
NEXT WEEK.

&&

.AVIATION...
192015Z...AIR MASS MOIST AND UNSTABLE THROUGH WEDNESDAY WITH SW
CALIFORNIA UNDER THE NORTHERN HALF OF A SLOW MOVING CLOSED LOW.
PREVAILING CONDITIONS BKN-OVC MERGING CLOUD LAYERS BETWEEN
FL025-FL150 AND ABOVE FL200 AND MTNS OBSCD. BANDS OF SHOWERS/TSTMS
FORMING AND ROTATING FROM E-SE TO NW-W WITH TOPS TO FL350 AND
CIG/VSBY LOWERING TO 500 FT AGL/1SM IN +TSRA.

&&

.MARINE...
BANDS OF SHOWERS/TSTMS FORMING AND ROTATING AROUND NORTHERN HALF OF
THE LOW WILL CONTINUE TO MOVE WESTWARD ACROSS COASTAL WATERS THROUGH
THIS EVENING. IN ADDITION TO LIGHTNING AND POOR VISIBILITY IN HEAVY
RAIN...CONDITIONS ARE FAVORABLE FOR WATERSPOUTS TO FORM.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.

&&

PUBLIC...PG
AVIATION/MARINE...BALFOUR

NWS ON THE WEB AT WEATHER.GOV/SANDIEGO

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN DIEGO CA
400 PM PDT TUE OCT 19 2010

CAZ042-043-048-050-055>058-060>062-201300-
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-
400 PM PDT TUE OCT 19 2010

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

.DAY ONE...TONIGHT

LOW PRESSURE MOVING INTO NORTHERN BAJA WILL BRING SCATTERED SHOWERS
AND THUNDERSTORMS. EXPECT BRIEF HEAVY RAINFALL CAUSING LOCAL
FLOODING...LIGHTNING STRIKES...AND SMALL HAIL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH TUESDAY

LOW PRESSURE MOVING THROUGH NORTHERN BAJA WILL BRING SCATTERED
SHOWERS AND THUNDERSTORMS THROUGH WEDNESDAY...GRADUALLY DECREASING
WEDNESDAY NIGHT AND THURSDAY. BRIEF HEAVY RAINFALL CAUSING LOCAL
FLOODING...LIGHTNING STRIKES...AND SMALL HAIL ARE POSSIBLE.

.SPOTTER INFORMATION STATEMENT...SKYWARN WEATHER ACTIVATION IS NOT
REQUESTED FOR THIS AREA...HOWEVER WEATHER SPOTTERS ARE ENCOURAGED TO
REPORT SIGNIFICANT WEATHER CONDITIONS.

MM

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
651 PM PDT TUE OCT 19 2010

CAZ055-060-200230-
SAN BERNARDINO COUNTY MOUNTAINS-
APPLE AND LUCERNE VALLEYS-
651 PM PDT TUE OCT 19 2010

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN SAN BERNARDINO COUNTY
UNTIL 730 PM PDT...

AT 645 PM PDT...DOPPLER RADAR WAS TRACKING THUNDERSTORMS ACROSS THE
HIGH DESERTS. THE STRONGEST STORMS WILL AFFECT PHELAN...HESPERIA AND
APPLE VALLEY WITH HAIL AND STRONG WINDS TO 50 MPH. BRIEF FLOODING IS
LIKELY ON HIGHWAY 395 AND INTERSTATE 15 IS LIKELY.

THE STORMS WERE MOVING WEST AT 30 MPH.

AREAS AFFECTED BY THIS STORM INCLUDE...VICTORVILLE...APPLE VALLEY...
GEORGE AFB...ADELANTO...MOUNTAIN VIEW ACRES...ORO GRANDE AND
HELENDALE.

LAT...LON 3478 11688 3430 11689 3432 11764 3456 11766
      3457 11767 3482 11767 3483 11760
TIME...MOT...LOC 0148Z 180DEG 0KT 3448 11731

MOEDE