Flash Flood Warning 20, NWS Los Angeles, CA

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1005 PM PST TUE DEC 28 2004

.SHORT TERM...IMPULSE ROTATING AROUND UPPER LOW WAS ENHANCING CLOUD
TOPS ON SATELLITE OVER SW CA THIS EVENING. PRECIP COVERAGE AND
INTENSITIES HAVE INCREASED ACROSS THE DISTRICT THIS EVENING AND THERE
WERE SCATTERED THUNDERSTORMS OVER PARTS OF VTU/L.A. COUNTIES AND OVER
THE COASTAL WATERS. STRONG STORM SYSTEM WILL CONTINUE TO IMPACT THE
REGION OVERNIGHT INTO WEDNESDAY MORNING WITH PLENTY OF RAINFALL AND
MOUNTAINS SNOW. THE MODELS ARE INDICATING WINDS WILL INCREASE RAPIDLY
OVERNITE ESPECIALLY S OF POINT CONCEPTION. BY MORNING S TO SE WINDS
SHOULD BE VERY GUSTY 30 TO 40 MPH AND HIGHER. HIGH WIND WARNINGS/
ADVISORIES IN EFFECT OVER PORTIONS OF THE DISTRICT THRU NOON WEDNESDAY.
WITH HEAVY MOUNTAIN SNOWS MAINLY ABOVE 5000 FEET...WINTER STORM WARNING
IN EFFECT FOR VTU/L.A. MOUNTAINS THRU 4 PM WED. FLOOD AND FLASH FLOOD
WATCHES CONTINUE OVER PORTIONS OF THE DISTRICT THRU NOON WEDNESDAY AS
WELL. PLEASE REFER TO THE STATEMENTS LISTED AT THE BOTTOM OF THIS
DISCUSSION FOR ALL THE INFO ON THIS EVENT. THESE STATEMENTS CAN BE
EASILY ACCESSED ON THE OXNARD NWS WEB SITE AT WWW.WRH.NOAA.GOV/LOX.

LONG WAVE UPPER TROF TO LINGER OVER CA THRU FRI. THIS WILL RESULT IN
VARYING AMOUNTS OF CLOUDS WITH ADDITIONAL SHOWERS POSSIBLE OVER THE
REGION FROM WED AFTERNOON THRU FRI. THERE WILL ALSO BE PERIODS OF DRY
WEATHER THRU THE END OF THE WEEK...BUT SHOWERS ARE IN THE FORECAST
EACH DAY. TEMPS WILL REMAIN BELOW NORMAL FOR THE MOST PART.

.LONG TERM...MORE LARGE SCALE UPPER TROFFINESS WILL LINGER SAT AND SUN
OVER CA. LITTLE CHANGE IN THE WEATHER CAN BE EXPECTED WITH MORE
CLOUDS WITH A CHANCE OF SHOWERS AND GENERALLY BELOW NORMAL TEMPS.

&&

.AVIATION...
LAX STILL STILL FACING A LONG DURATION STRONG EAST WIND EVENT. ETA
SUGGESTS SOUTHEAST WINDS AGAIN FOR WEDNESDAY MORNING.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
HIGH WIND WARNING/WIND ADVISORY (SEE LAXNPWLOX)
WINTER STORM WARNING (SEE LAXWSWLOX)
FLASH FLOOD WATCH (SEE LAXFFALOX)
FLOOD ADVISORY (SEE LAXFLSLOX)
GALE WARNING/SMALL CRAFT ADVISORY (SEE LAXCWFLOX)
HIGH SURF ADVISORY (LAXCFWLOX)

&&

SIRARD

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
600 AM PST TUE DEC 28 2004

CAZ034>041-044>047-051>054-059-087-088-291400-
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-
LOS ANGELES COUNTY VALLEYS-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-
600 AM PST TUE DEC 28 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY

A POWERFUL PACIFIC STORM WILL SLOWLY MOVE EASTWARD TODAY. THIS STORM
WILL PROUDCE AN ABUNDANCE OF HAZARDOUS WEATHER.

THERE WILL BE PERIODS OF RAIN...HEAVY AT TIMES...THIS MORNING. THESE
RAINS WILL CAUSE STREET FLOODING OVER THE URBAN AREAS AND FLASH
FLOODING COULD BECOME POSSIBLE IN THE MOUNTAINS AND VALLEYS BELOW
THE MOUNTAINS.

UP TO 5 INCHES OF RAIN WILL FALL OVER THE FLAT TERRAIN WHILE UP TO
12 INCHES OF RAIN IS POSSIBLE OVER THE HIGHER TERRAIN.

A STRONG JET STREAM WILL PRODUCE A CHANCE OF THUNDERSTORMS THIS
MORNING OVER LOS ANGELES AND VENTURA COUNTIES SOME OF THESE
THUNDERSTORMS MAY BRING SEVERE WEATHER TO THE AREAS.

THE DEEP SURFACE LOW ASSOCIATED WITH THIS STORM WILL PRODUCE VERY
STRONG WINDS THROUGHOUT THE AREA. WIND WARNINGS ARE POSTED FOR THE
SANTA BARBARA MOUNTAINS...WIND ADVISORIES ARE POSTED FOR THE
REMAINDER OF SANTA BARBARA COUNTY...ALL OF SAN LUIS OBISPO COUNTY...
AND THE MOUNTAINS OF VENTURA AND LOS ANGELES COUNTY INCLUDING THE
SANTA MONICA MOUNTAINS.

THIS SYSTEM WILL CAUSE ALL MANOR OF HAZARDS FOR THE MARINE INTERESTS
GALE FORCE WINDS WILL DEVELOP ACROSS THE WATERS TODAY...THESE WINDS
WILL PRODUCE A LARGE SHORT PERIOD SWELL WHICH COULD CAUSE LOCAL
COASTAL FLOODING AS WELL AS AN HIGH RISK OF RIP CURRENTS.

ANOTHER IMPULSE IS SLATED TO ARRIVE OVERNIGHT AND WILL REINTENSIFY
THE RAIN AND THUNDER THREAT.

* WINTER STORM WARNING.......SEE WWUS46 KLOX - WSWLOX FOR DETAILS *

* HIGH WIND WARNING..........SEE WWUS76 KLOX - NPWLOX FOR DETAILS *

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

* WIND ADVISORY..............SEE WWUS76 KLOX - NPWLOX FOR DETAILS *

* GALE WARNING...............SEE FZUS56 KLOX - CWFLOX 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... WEDNESDAY THROUGH MONDAY

THE STORM WILL WIND DOWN WEDNESDAY MORNING. IT WILL BE FOLLOWED BY A
UNSETTLED COOL AND BREEZY DAY.

THE REST OF THE WEEK WILL HAVE PERIODS OF RAIN BUT THE WEATHER
SHOULD BE MUCH LESS HAZARDOUS.

* WINTER STORM WARNING.......SEE WWUS46 KLOX - WSWLOX FOR DETAILS *

* HIGH WIND WARNING..........SEE WWUS76 KLOX - NPWLOX FOR DETAILS *

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

* WIND ADVISORY..............SEE WWUS76 KLOX - NPWLOX FOR DETAILS *

* GALE WARNING...............SEE FZUS56 KLOX - CWFLOX FOR DETAILS *

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

.SPOTTER INFORMATION STATEMENT...

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

RORKE