Flash Flood Warning 3, NWS Los Angeles, CA

075 
WGUS76 KLOX 222307
FFSLOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OXNARD CA
407 PM PDT MON JUL 22 2013

CAC111-230000-
/O.CON.KLOX.FF.W.0003.000000T0000Z-130723T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VENTURA CA-
407 PM PDT MON JUL 22 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 PM PDT FOR NORTH
CENTRAL VENTURA COUNTY...

AT 400 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM PRODUCING MODERATE TO HEAVY RAIN JUST SOUTH 
OF MOUNT PINOS TOWARD LOCKWOOD VALLEY ROAD. FLASH FLOODING DUE TO 
RUNOFF INTO DRY WASHES ONTO LOCKWOOD VALLEY ROAD IS LIKELY THROUGH 5 
PM PDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER 
GROUND. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR CREEKS.

&&

LAT...LON 3482 11923 3482 11898 3480 11897 3468 11896
      3467 11925 3486 11925 3486 11923

$$

SIRARD

269 
WGUS76 KLOX 222359
FFSLOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OXNARD CA
459 PM PDT MON JUL 22 2013

CAC111-230006-
/O.EXP.KLOX.FF.W.0003.000000T0000Z-130723T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VENTURA CA-
459 PM PDT MON JUL 22 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 500 PM PDT FOR NORTH
CENTRAL VENTURA COUNTY...

THE THUNDERSTORMS THAT PRODUCED HEAVY RAIN EARLIER HAVE DISSIPATED. 
EVEN SO...THE THREAT OF ADDITIONAL THUNDERSTORMS WITH HEAVY RAIN 
WILL CONTINUE INTO THIS EVENING...AND A FLASH FLOOD WATCH REMAINS IN 
EFFECT UNTIL 11 PM PDT.

LAT...LON 3482 11923 3482 11898 3480 11897 3468 11896
      3467 11925 3486 11925 3486 11923

$$

SIRARD

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
155 PM PDT MON JUL 22 2013

.SYNOPSIS...

A MOIST...MONOONSONAL FLOW WILL BRING ISOLATED SHOWERS AND THE SLIGHT
CHANCE OF THUNDERSTORMS TO THE AREA TODAY AND TONIGHT. THERE IS THE
POTENTIAL FOR HEAVY RAIN OVER THE MOUNTAINS AND DESERTS THIS
AFTERNOON AND EVENING. ON TUESDAY...THE THREAT OF SHOWERS AND
THUNDERSTORMS WILL BE CONFINED TO THE LOS ANGELES AND VENTURA COUNTY
MOUNTAINS AND ANTELOPE VALLEY. FOR THE SECOND HALF OF THE WEEK...DRY
AND WARMER CONDITIONS ARE EXPECTED.

&&

.SHORT TERM (TODAY-THU)...FLASH FLOOD WATCH WILL CONTINUE OVER THE
VENTURA...LOS ANGELES COUNTY MOUNTAINS AND ANTELOPE VALLEY THROUGH
THIS EVENING. AIR MASS TYPE THUNDERSTORMS HAD DEVELOPED OVER THE
NORTHWEST CORNER IN VENTURA COUNTY AROUND NOON AND WAS SHORT LIVED.
EDWARDS DUAL POL ESTIMATED RAINFALL RATE .10 INCH/HR. A STRONGER
STORM WAS OVER BIG BEAR WITH AN ESTIMATED RAINFALL RATE OF .5-.75
INCH/HR. THE STORM OVER VENTURA COUNTY WAS MOVING NORTHWEST AT 28KT.
AS THE MID/UPPER LEVEL TROUGH SHIFTS FARTHER NORTHWEST THE STEERING
FLOW IS EXPECTED TO WEAKEN AND THE THREAT OF FLASH FLOODING WILL
INCREASE. THE STEERING FLOW IS EXPECTED TO MOVE THE SHORT LIVED
THUNDERSTORMS WEST AND THE REMNANT PRECIPITATION IS EXPECTED MOVE
WEST OVER THE LOWER ELEVATIONS AND NEAR SHORE THROUGH THE REMAINDER
OF THE AFTERNOON. THE THREAT OF THUNDERSTORMS ACTIVITY WITHIN THE
INFLUENCE OF THE MARINE BOUNDARY LAYER AND ONSHORE PRESSURE GRADIENT
IS VERY LOW AND HAVE REMOVED THE THUNDERSTORMS OVER NEAR SHORE
WATERS AND OVER THE LOWER ELEVATIONS. STABILITY WILL INCREASE AS THE
SUN SETS AND THE THREAT OF THUNDERSTORMS WILL DIMINISH THROUGH THE
EVENING. OTHERWISE HAVE LOWERED THE POPS TUESDAY AFTERNOON THROUGH
TUESDAY EVENING. AIR MASS WILL BECOME STABLE OVERNIGHT AND IS
EXPECTED TO REMAIN RELATIVELY STABLE TUESDAY AFTERNOON WITH A CIN OF
OVER 250 J/KG OVER THE MOUNTAINS AND DESERT. CURRENT TEMPERATURES
WERE UP 5 TO 10 DEGREES FROM SUNDAY AT THIS TIME EXCEPT FOR THE
AREAS WITHIN THE THUNDERSTORM ACTIVITY. A WARMING TREND IS EXPECTED
THROUGH THURSDAY WITHIN A DRYING AIR MASS AND BUILDING
HEIGHTS/THICKNESSES. TEMPERATURES WILL LIKELY REMAIN SEVERAL DEGREES
BELOW NORMAL IN THE LOWER ELEVATIONS AND WARM TO SEVERAL DEGREES
ABOVE NORMAL BY THU.

.LONG TERM (FRI-MON)...A SUBTROPICAL LONG WAVE RIDGE CENTERED OVER
THE AREA WILL WEAKEN AND SHIFT SOUTH THROUGH THE PERIOD. A WEAK
UPPER LEVEL TROUGH WEST OF THE AREA WILL MOVE ASHORE WHILE ROTATING
AROUND THE LONG WAVE RIDGE THROUGH THE PERIOD. THE SYSTEM MAY WRING
OUT THE MARINE CLOUDS AND DRIZZLE MAY OCCUR NEAR THE COAST SATURDAY
AND SUNDAY NIGHTS. TEMPERATURES WILL REMAIN BELOW NORMAL AT THE
COAST AND A COOLING TREND IS EXCPECTED INLAND SATURDAY AND SUNDAY.
SLIGHT WARMING IS EXPECTED SUNDAY AS THE MARINE CLOUDS DISSIPATE.

&&

.AVIATION...22/1800Z...
SCT TO BKN MID AND UPPER LEVEL CLOUDS WILL PERSIST ACROSS THE REGION
INTO THIS EVENING. EXPECT ISOLATED TO SCATTERED SHOWERS AND TSTMS
THIS AFTERNOON AND EVENING...ESP IN THE MTNS OF L.A. AND VTA
COUNTIES AND THE ANTELOPE VALLEY. ANY THUNDERSTORM MAY HAVE LOWER
CIGS...BRIEF WIND GUSTS IN EXCESS OF 35 KT AND LOCALLY HEAVY RAIN.
ATMOSPHERE WILL BEGIN TO STABILIZE AFTER 06Z. MARINE LAYER WILL
BEGIN TO REFORM BY 12Z WITH PATCHY LOWER CIGS NEAR THE COAST.

KLAX...LOW TO MODERATE CONFIDENCE IN 18Z TAF. THERE IS A 10-20%
CHANCE OF A SHOWER OR TSTM IN THE VCNTY OF THE AIRPORT TODAY. THERE
IS A 20% CHANCE THAT CONDITIONS WILL REMAIN VFR TONIGHT INTO TUE
MORNING.

KBUR...MODERATE CONFIDENCE IN 18Z TAF. THERE IS A 20% CHANCE OF A
SHOWER OR TSTM IN THE VCNTY OF THE AIRPORT TODAY.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
FLOOD WATCH (SEE LAXFFALOX).
HIGH RIP CURRENT RISK (SEE LAXSRFLOX).

&&

PUBLIC...30
AVIATION...CS
SYNOPSIS...EB

WWW.WEATHER.GOV/LOSANGELES

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
801 AM PDT MON JUL 22 2013

CAZ034>041-044>046-051>054-059-087-088-547-548-231300-
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-
801 AM PDT MON JUL 22 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY AND TONIGHT

A CHANCE OF THUNDERSTORMS COULD BRING HEAVY RAIN CAPABLE OF
PRODUCING FLASH FLOODING TO THE MOUNTAINS AND ANTELOPE VALLEY
THROUGH THE EVENING. THERE IS A SLIGHT CHANCE OF THUNDERSTORMS
ELSEWHERE INCLUDING THE COASTAL WATERS. BEACHGOERS WILL FACE A
THREAT OF RIP CURRENTS IN THE SURF ZONE.

* FLOOD WATCH................SEE WGUS66 KLOX - FFALOX FOR DETAILS *

* HIGH RIP CURRENT RISK......SEE FZUS56 KLOX - SRFLOX FOR DETAILS *

* MARINE WEATHER STATEMENT...SEE FZUS76 KLOX - MWSLOX FOR DETAILS *

.DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OXNARD CA
300 PM PDT MON JUL 22 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0153 PM     FLASH FLOOD      20 SE CUYAMA            34.74N 119.40W
07/22/2013                   VENTURA            CA   LAW ENFORCEMENT

            CHP REPORTED ROCKS AND WATER OVER HIGHWAY 33 NEAR APACHE
            CANYON ROAD.

&&

SIRARD