Frost Advisory 6, NWS Los Angeles, CA

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
230 PM PST SAT DEC 3 2005

.SHORT TERM...HAVE ISSUED A FROST ADVISORY FOR THE SANTA YNEZ VALLEY
AND WIND ADVISORY FOR THE MOUNTAINS OF VENTURA AND LOS ANGELES
COUNTIES AS WELL AS SANTA CLARITA VALLEY TONIGHT. COLD AIR WILL
CONTINUE TO SURGE SOUTH AS HIGH PRESSURE BUILDS OVER CALIFORNIA AND
NEVADA TONIGHT. THE HIGH WILL PERSIST OVER THE GREAT BASIN THROUGH
MON AND THEN SHIFT EAST TUE. OVERNIGHT TEMPERATURES WILL PERSIST A
FEW DEGREES BELOW SEASONAL NORMAL. TEMPERATURES IN THE MOUNTAINS
WERE AROUND 20 DEGREES LOWER AT THIS TIME THAN YESTERDAY WITH
COASTAL TEMPERATURES SEVERAL DEGREES WARMER UNDER CLEAR SKIES AND
MODERATE DECENDING NORTH NORTHEAST FLOW. THE COOLER BELOW NORMAL
TEMPERATURES WILL PERSIST INLAND WITH WARMING TEMPERATURES NEAR THE
COAST AS THE HIGH PRESSURE PERSIST EAST OF THE AREA AND OFFSHORE
FLOW PREVAILS.

.LONG TERM...HAVE INCLUDED SLIGHT CHANCE OF SHOWERS THURSDAY THROUGH
FRIDAY OVER AREAS. AS A LONG WAVE RIDGE AMPLIFIES AND BUILDS NORTH
OF THE AREA A FAMILIAR UPPER LOW PRESSURE SYSTEM SURGES SOUTH AND
ROTATES EAST WITHIN THE BASE OF THE RIDGE. 12Z MEAN ENSEMBLE WAS
CONTRARY TO THE OPERATIONAL SOLUTION AND WILL FOLLOW THE MEAN
SOLUTION. A DRY AIR MASS WILL EXIST BETWEEN NOW AND THEN AS WELL AND
TO THIS DEGREE HAVE INCLUDE LOW POPS.

&&

.AVIATION...SKIES HAVE CLEARED OUT NICELY...WITH JUST A FEW STRATOCU
OVER THE EASTERN SAN GABRIEL RANGE THIS AFTERNOON. SFC PRESSURE
GRADIENTS HAVE TRENDED SHARPLY OFFSHORE COMPARED TO 24 HOURS AGO.
LAX-DAG HAS CHANGED -9.2MB OVER THAT PERIOD. WITH COOLER TEMPS
OVERNIGHT AND OFFSHORE FLOW DEVELOPING OVERNIGHT...LOW CLOUDS WILL
NOT BE AN ISSUE OVER THE CWA TONIGHT. HOWEVER...GUSTY NORTHERLY
WINDS CONTINUE TO GUST UP TO 60 MPH IN SOME LOS ANGELES AND VENTURA
COUNTY MOUNTAIN ZONES. ALSO...SUNDOWNER TYPE WINDS WILL OCCUR OVER
THE SANTA BARBARA AREA THIS EVENING THROUGH MIDNIGHT. MODELS
INDICATE A RATHER STRONG PRESSURE GRADIENT BETWEEN KSMX-KSBA OF
-4.2MB THROUGH THIS PERIOD. THEREFORE KSBA WILL LIKELY DEAL WITH
SOME LOCAL WINDSHEAR BETWEEN 010-020. AS THE WINDS BEGIN TO SHIFT TO
THE NE LATER TONIGHT...THE USUAL AREAS THAT EXPERIENCE SANTA ANA
WINDS WILL BE AFFECTED THROUGH SUNDAY AFTERNOON. KBUR COULD
EXPERIENCE SOME WINDSHEAR LATER TONIGHT. KLAX WILL HAVE E WINDS
EARLY SUNDAY MORNING...HOWEVER SHOULD STAY BELOW 10 KT. THESE WINDS
WILL SHIFT FROM THE W AT 20Z TOMORROW. POSSIBLE STRATUS DEVELOPMENT
IN THE LA COUNTY COASTAL WATERS OVERNIGHT...BUT SHOULD BE SHORT
LIVED IF IT REACHES LAND WITH OFFSHORE FLOW DEVELOPING BEFORE
SUNRISE.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY (SEE LAXNPWLOX).
SMALL CRAFT ADVISORY (SEE LAXCWFLOX).
GALE WARNING (SEE LAXCWFLOX).
FROST ADVISORY (SEE LAXNPWLOX).
RED FLAG WARNING (LAXRFWLOX).

&&

PUBLIC...FORWOOD
AVIATION...KAPLAN

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1037 AM PST SAT DEC 3 2005

CAZ034>041-044>047-051>054-059-087-088-041400-
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-
1037 AM PST SAT DEC 3 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY

THERE WILL BE GUSTY NORTH TO NORTHWEST WINDS IN THE MOUNTAINS AND IN
THE SANTA BARBARA AREA...ESPECIALLY THIS MORNING. WINDS WILL
DIMINISH SOMEWHAT THIS AFTERNOON. GALE FORCE WINDS WILL PERSIST NEAR
SHORE THROUGH THE EVENING. SEE THE WIND ADVISORY AND COASTAL WATERS
FORECAST FOR DETAILS.

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

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

.DAYS TWO THROUGH SEVEN... SUNDAY THROUGH FRIDAY

GUSTY NORTHEAST WINDS AND EXTREMELY DRY CONDTIONS ARE EXPECTED
ACROSS MUCH OF VENTURA AND LOS ANGELES COUNTIES SUNDAY THROUGH
TUESDAY. PLEASE SEE THE FIRE WEATHER WATCH FOR DETAILS.

* FIRE WEATHER WATCH.........SEE WWUS86 KLOX - RFWLOX FOR DETAILS *

.SPOTTER INFORMATION STATEMENT...

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

FORWOOD