Freeze Warning 3, NWS Los Angeles, CA

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1020 PM PDT WED OCT 25 2006

.SHORT TERM (TONIGHT-SAT)...WINDS BEGINNING TO INCREASE OVER THE
MOUNTAINS AS OFFSHORE GRADIENTS INCREASE OVER SRN CA. AN UNUSUAL
HAPPENING THIS EVENING WITH LOW CLOUDS HUGGING SBA S COAST WHILE AT
THE SAME TIME GOOD OFFSHORE GRADIENTS THERE AND NW WINDS GUSTING TO
38 MPH AT MONTECITO HILLS. THE LOW CLOUDS THERE SHOULD MOVE OFF THE
COAST PROBABLY BEFORE MIDNIGHT. LOW CLOUDS ALSO STUBBORN ALONG
L.A./VTU COASTS AS WELL BUT ALL INDICATIONS ARE THE OFFSHORE WINDS
WILL SURFACE LATER TONIGHT OVER PORTIONS OF THIS AREA AND PUSH THE
LOW CLOUDS OUT. WINDS ARE EXPECTED TO BECOME VERY STRONG LATER
TONIGHT INTO THU MORNING BELOW AND THRU PASSES AND CANYONS OF
L.A./VTU VALLEYS AND MOUNTAINS. HIGH WIND WARNINGS IN EFFECT FOR
THESE AREAS LATER TONIGHT INTO THU MORNING. VERY DRY AIR WITH
DEWPOINTS IN THE TEENS TO LOWER 20S HAVE MOVED INTO INTERIOR SLO/SBA
COUNTIES. WITH RADIATIONAL COOLING...THE SHELTERED VALLEYS SHOULD
FALL TO FREEZING OR BELOW LATE TONIGHT AND EARLY THU...WITH THE
COLDEST AREAS EXPECTED TO DROP TO AS LOW AS 26 DEGREES EARLY THU. AS
A RESULT...A FREEZE WARNING HAS BEEN ISSUED FOR THESE AREAS. PLEASE
SEE LAXNPWLOX FOR DETAILS ON THE HIGH WIND WARNINGS AND FREEZE
WARNINGS.

AN UPPER RIDGE IS FORECAST TO BUILD ALONG THE CA COAST THU THRU
FRI...THEN MOVE INLAND TO ARIZONA AND NEVADA FOR SAT. IT LOOKS LIKE
OFFSHORE WINDS WILL CONTINUE OVER THE DISTRICT NIGHT AND MORNING
HOURS THRU SAT. CLEAR SKIES AND ABOVE NORMAL HI TEMPS WILL COVER
MUCH OF THE REGION DURING THE PERIOD. OVERNIGHT LOWS WILL BE MILD IN
THE BREEZY AREAS...BUT MUCH COOLER IN SHELTERED VALLEYS...AND MORE
FREEZING TEMPERATURES WILL BE POSSIBLE IN THE COLDER VALLEYS OF
SLO/SBA COUNTIES THU NIGHT.

...FROM PREVIOUS DISCUSSION...

.LONG TERM (SUN-WED)...PRETTY MUCH A COMPLETE REVERSAL IN TRENDS FOR
THE LONG TERM AS A COUPLE OF WEAK SYSTEMS PASS TO OUR NORTH. ONSHORE
FLOW WILL RETURN AND LIKELY THE MARINE LYR CLOUDS AS WELL, AT LEAST
TO THE COAST. LOOK FOR HIGHS TO DROP 10-20 DEGREES AT LOWER
ELEVATIONS BETWEEN FRIDAY AND MONDAY, WITH LITTLE CHANGE INTO NEXT
WEDNESDAY.

&&

.AVIATION...PERSISTENT LOW CLOUDS ALONG THE COAST S OF POINT
CONCEPTION SHOULD BRING IFR CIGS TO KSBA AND KOXR UNTIL 08Z TO 10Z
THEN THE LOW CLOUDS SHOULD BE PUSHED OFF THE COAST WITH VFR
CONDITIONS DEVELOPING. MVFR VSBYS WILL PERSIST OVER THE VTU COAST
AND VALLEYS FOR A WHILE OVERNIGHT AS WELL UNTIL THE OFFSHORE FLOW
SURFACES IN THESE AREAS. VFR CONDITIONS SHOULD COVER ALL AREAS BY
LATE TONIGHT AND CONTINUE THRU THU. GUSTY N TO NE WINDS AT KVNY ON
THU SHOULD RESULT IN SOME LLWS AS WELL.

&&

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

&&

PUBLIC...SIRARD/WOFFORD
AVIATION...SIRARD

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
945 PM PDT WED OCT 25 2006

CAZ034>041-044>047-051>054-059-087-088-261300-
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-
945 PM PDT WED OCT 25 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY (OVERNIGHT THROUGH 6 AM PDT THURSDAY)

SANTA ANA WINDS WILL DEVELOP OVERNIGHT TONIGHT AND INCREASE INTO THE
DAYBREAK HOURS AS THE UPPER-LEVEL SUPPORT ASSOCIATED WITH A TROUGH
MOVING THROUGH THE GREAT BASIN MOVES INTO SOUTHERN CALIFORNIA. AS A
RESULT...WINDY CONDITIONS WILL DEVELOP THROUGH AND BELOW THE CANYONS
AND PASSES OF SOUTHWESTERN CALIFORNIA. THE COMBINATION OF STRONG
WINDS AND DECREASING HUMIDITIES WILL MAKE FOR CRITICAL FIRE WEATHER
CONDITIONS.

THERE WILL BE AREAS OF TEMPERATURES AT OR BELOW FREEZING IN
WIND SHELTERED LOCATIONS OF THE INTERIOR VALLEYS OF SAN LUIS
OBISPO COUNTY AND THE CUYAMA VALLEY AFTER 4 AM PDT THURSDAY.

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

* RED FLAG WARNING...........SEE WWUS86 KLOX - RFWLOX FOR DETAILS *

* FREEZE WARNING.............SEE WWUS76 KLOX - NPWLOX FOR DETAILS *

.DAYS TWO THROUGH SEVEN... THURSDAY THROUGH TUESDAY

THERE WILL BE AREAS OF TEMPERATURES AT OR BELOW FREEZING IN WIND
SHELTERED LOCATIONS OF THE INTERIOR VALLEYS OF SAN LUIS OBISPO
COUNTY AND THE CUYAMA VALLEY BETWEEN 6 AM AND 9 AM PDT THURSDAY.

THE OFFSHORE FLOW PATTERN WILL CONTINUE OVER THE AREA THROUGH
SATURDAY MORNING. THE COMBINATION OF STRONG WINDS AND LOW HUMIDITIES
WILL MAKE FOR CRITICAL FIRE WEATHER CONDITIONS.

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

* RED FLAG WARNING...........SEE WWUS86 KLOX - RFWLOX FOR DETAILS *

* FREEZE WARNING.............SEE WWUS76 KLOX - NPWLOX FOR DETAILS *

.SPOTTER INFORMATION STATEMENT...

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