Flash Flood Warning 11, NWS Los Angeles, CA

519 
WGUS76 KLOX 130014
FFSLOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OXNARD CA
514 PM PDT FRI JUN 12 2015

CAC037-130215-
/O.CON.KLOX.FF.W.0011.000000T0000Z-150613T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LOS ANGELES CA-
514 PM PDT FRI JUN 12 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM PDT FOR
NORTHEASTERN LOS ANGELES COUNTY...

AT 504 PM PDT...DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS 
CONTINUING TO PRODUCE HEAVY RAIN ACROSS THE WARNED AREA. ONE TO TWO 
INCHES OF RAIN MAY HAVE ALREADY FALLEN...ESPECIALLY NEAR THE EAST 
SIDE OF THE POWERHOUSE BURN AREA. FLASH FLOODING IS LIKELY. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
POWERHOUSE BURN AREA...
WEST OF LANCASTER... 
LAKE LOS ANGELES... 
LLANO... 
AND SOUTH TO FALLING SPRINGS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

MOVE AWAY FROM RECENTLY BURNED AREAS. LIFE THREATENING FLOODING OF
CREEKS...ROADS AND NORMALLY DRY ARROYOS IS LIKELY. THE HEAVY RAINS
WILL LIKELY TRIGGER ROCKSLIDES...MUDSLIDES AND DEBRIS FLOWS IN STEEP
TERRAIN...ESPECIALLY IN AND AROUND THESE AREAS.

&&

LAT...LON 3422 11766 3425 11822 3479 11859 3482 11855
      3482 11767 3430 11765

$$

GOMBERG/BOLDT

736 
WGUS76 KLOX 130226
FFSLOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE OXNARD CA
726 PM PDT FRI JUN 12 2015

CAC037-130226-
/O.EXP.KLOX.FF.W.0011.000000T0000Z-150613T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LOS ANGELES CA-
726 PM PDT FRI JUN 12 2015

...THE FLASH FLOOD WARNING FOR NORTHEASTERN LOS ANGELES COUNTY HAS
EXPIRED...

THE HEAVY RAIN HAS ENDED...ALLOWING THE FLASH FLOOD WARNING TO EXPIRE.
PLEASE CONTINUE TO HEED ALL ROAD CLOSURES DUE TO EARLIER FLASH FLOODING
ACROSS THE REGION. 

CALIFORNIA HIGHWAY PATROL REPORTED FLASH FLOODING WITH MUD AND DEBRIS FLOWS
ON LARGO VISA ROAD NEAR THE JUNCTION OF HIGHWAY 138...SOUTH OF LLANO. 
LARGO VISTA ROAD IS REPORTED TO BE CLOSED AT THE JUNCTION OF HIGHWAY 138...WITH
A COUPLE OF VEHICLES TRAPPED IN 2 TO 4 FEET OF MUD.


LAT...LON 3422 11766 3425 11822 3479 11859 3482 11855
      3482 11767 3430 11765

$$

GOMBERG/RORKE

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
100 PM PDT FRI JUN 12 2015

.SYNOPSIS... THUNDERSTORMS DEVELOPING OVER THE MOUNTAINS THIS
AFTERNOON THROUGH EARLY IN THE EVENING. THESE THUNDERSTORMS WILL
RESULT IN A POTENTIAL FOR FLASH FLOODING. OTHERWISE A TROUGH OF LOW
PRESSURE OVER THE REGION WILL LINGER THROUGH EARLY
SATURDAY...KEEPING A PERSISTENT MARINE LAYER AND ONSHORE FLOW IN
PLACE THROUGH SATURDAY MORNING. HIGH PRESSURE WILL BEGIN TO BUILD
OVER THE AREA SATURDAY AFTERNOON...PRODUCING A WARMING AND DRYING
TREND THROUGH THE WEEKEND.

&&

.SHORT TERM (TODAY-MON)...THUNDERSTORMS FIRING UP ON SCHEDULE WITH
THE BULK OF THE ACTIVITY SO FAR OVER VENTURA COUNTY AND EXTREME ERN
SBA COUNTY. MODELS DID A GOOD JOB INDICATING THIS WOULD BE THE FOCUS
AREA TODAY BUT CERTAINLY ENOUGH INSTABILITY AND MOISTURE TO KEEP A
RISK GOING FOR LA MTNS/AV AS WELL AS SOUTHEASTERN SLO COUNTY.
FLOODING THE MAIN RISK TODAY WITH PWATS AROUND 1.3" AND STEERING
WINDS UNDER 10 KT FROM THE NORTH.

ACTIVITY EXPECTED TO SUBSIDE SHORTLY AFTER SUNSET. HOWEVER, MODELS
STILL INDICATING FAVORABLE CONDITIONS FOR CONVECTIVE DEVELOPMENT
SATURDAY AFTERNOON, ESPECIALLY ERN LA COUNTY, WITH LI'S AROUND -4
AND 850 DEWPOINTS AROUND -13. SO SOME SLIGHT CHANCE POPS HAVE BEEN
ADDED TO THAT AREA. NOT AS MUCH OF A CHANCE ACROSS VENTURA COUNTY
SATURDAY AS THE AIR MASS IS MUCH DRIER THERE, BUT SHOULD AT LEAST
SEE SOME CU IN THE AFTERNOON.

MARINE LYR EXPECTED TO SHRINK A BIT OVERNIGHT AS HEIGHTS START TO
BUILD AND WARMER AIR MOVES IN ALOFT FROM THE WEST. LOW CLOUDS SHOULD
STILL PUNCH WELL INTO THE VALLEYS TONIGHT, BUT WITH EARLIER
CLEARING. HOWEVER, A STRONG INVERSION AND CONTINUED ONSHORE FLOW
WILL LIKELY KEEP JUNE GLOOM CONDITONS AT MANY BEACHES THROUGH THE
WEEKEND. DAYTIME HIGHS WILL START WARMING SATURDAY, MAINLY INLAND,
WITH A SLOW WARMING TREND CONTINUING THROUGH MONDAY.

.LONG TERM (TUE-FRI)...MODELS MAINTAIN STRONG HIGH PRESSURE ACROSS
THE AREA THROUGH MOST OF THE WEEK FOR DRY WEATHER AND VERY WARM
TEMPS INLAND. COASTAL AREAS EXPECTED TO REMAIN UNDER THE INFLUENCE
OF THE MARINE LYR, AND IT'S VERY POSSIBLE THAT BEACH CLEARING WILL
REMAIN LIMITED MOST OF THE WEEK, ESPECIALLY NORTH AND WEST OF
MALIBU. ANTELOPE VALLEY HIGHS EXPECTED TO REACH 100 BY LATER IN THE
WEEKEND AND REMAIN THAT WAY MOST OF THE WEEK. GFS BRINGS 40C 950
TEMPS NEAR THE LA/SBD COUNTY LINE BY WED AND THU, WHICH IF TRUE
COULD LEAD TO TEMPS CLOSER TO 105, BUT ECMWF IS NOT QUITE AS WARM SO
WILL LEAVE TEMPS AROUND 100 FOR HIGHS THERE AND MID 90S FOR THE
WARMER COASTAL VALLEYS.

&&

.AVIATION...12/1800Z...

AT 1730Z...THE MARINE INVERSION AT KLAX WAS BASED AT 2500 FEET. THE
TOP OF THE INVERSION WAS AT 4800 FEET WITH A TEMPERATURE OF 22
DEGREES CELSIUS.

OVERALL...MODERATE CONFIDENCE IN THE 18Z TAFS. LITTLE CHANGE IS
EXPECTED IN THE MARINE LAYER DEPTH AND OVERALL WEATHER PATTERN
FOR THE NEXT 24 HOURS...SO WENT WITH A PERSISTENCE FORECAST.
CLEARING AND ARRIVAL TIMES OF STRATUS/FOG MAY BE OFF BY +/- 2 HOURS
FOR COASTAL AND VALLEY SITES. THERE IS A SLIGHT CHANCE OF
THUNDERSTORMS FOR KPMD AND KWJF THIS AFTERNOON...WITH A BETTER
CHANCE OF THUNDERSTORMS OVER THE MOUNTAINS. OUTFLOW FROM
THUNDERSTORMS COULD DELAY THE MARINE LAYER CLOUD FORMATION FOR
COASTAL AND VALLEY TAF SITES THIS EVENING.

KLAX...MODERATE CONFIDENCE IN 18Z TAF. ARRIVAL AND CLEARING TIMES
COULD BE OFF BY +/- 2 HOURS. THERE IS A 30 PERCENT CHANCE THAT
CONDITIONS WILL REMAIN MVFR TONIGHT AND NOT FALL INTO IFR. THERE IS
A 20 PERCENT CHANCE OF NO CLEARING THIS AFTERNOON.

KBUR...MODERATE CONFIDENCE IN 18Z TAF. ARRIVAL AND CLEARING TIMES
COULD BE OFF BY +/- 2 HOURS. THERE IS A 30 PERCENT CHANCE THAT
CONDITIONS WILL REMAIN MVFR TONIGHT AND NOT FALL INTO IFR. THERE
IS A VERY SLIGHT CHANCE THAT A THUNDERSTORM WILL DRIFT OFF THE
MOUNTAINS...BUT THE CHANCE OF THAT IS LESS THAN 10 PERCENT.

&&

.MARINE...

12/830 AM

PATCHY DENSE FOG WITH VISIBILITY 1 NM OR LESS WILL BE POSSIBLE THIS
MORNING...ESPECIALLY FOR THE COASTAL WATERS N OF POINT CONCEPTION
WHERE A MARINE WEATHER STATEMENT IS IN PLACE. MODERATE TO HIGH
CONFIDENCE THAT WINDS AND SEAS WILL REMAIN BELOW SMALL CRAFT
ADVISORY CRITERIA (SCA) THROUGH AT LEAST SATURDAY...OTHER THAN SOME
LOCAL GUSTS TO 25 KT AROUND POINT CONCEPTION AND IN THE VICINITY OF
THE CHANNEL ISLANDS. SEAS COULD APPROACH 10 FT BY ACROSS THE
NORTHERN OUTER WATERS BY SATURDAY EVENING DUE TO STRONG WINDS OFF
THE NORTHERN CA COAST. WIDESPREAD SCA CONDITIONS ACROSS THE OUTER
WATERS AND WESTERN PORTIONS OF THE INNER WATERS WILL BECOME MORE
LIKELY BY EARLY NEXT WEEK AS NW WINDS INCREASE.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
FLOOD WATCH (SEE LAXFFALOX).

&&

PUBLIC...MW
AVIATION/MARINE...SUKUP
SYNOPSIS...SMITH

WWW.WEATHER.GOV/LOSANGELES

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
915 AM PDT FRI JUN 12 2015

CAZ034>041-044>046-051>054-059-087-088-547-548-131300-
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-
915 AM PDT FRI JUN 12 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY

THUNDERSTORMS ARE EXPECTED IN THE MOUNTAINS TODAY AND SOME OF THOSE
COULD SPILL OVER INTO THE FOOTHILLS. HEAVY RAIN WITH THUNDERSTORMS
IN THE MOUNTAINS COULD RESULT IN FLASH FLOODING.

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

.DAYS TWO THROUGH SEVEN... SATURDAY THROUGH THURSDAY

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.

MW