Wind Advisory 3, NWS Los Angeles, CA

791 
WWUS76 KLOX 222019
NPWLOX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1219 PM PST THU JAN 22 2015

CAZ046-053-054-088-222130-
/O.CAN.KLOX.WI.Y.0003.000000T0000Z-150122T2300Z/
SANTA MONICA MOUNTAINS RECREATIONAL AREA-VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
SANTA CLARITA VALLEY-
INCLUDING THE CITIES OF...TOPANGA...LOCKWOOD VALLEY...
MOUNT PINOS...ACTON...MOUNT WILSON...SANDBERG...SANTA CLARITA...
NEWHALL...VALENCIA
1219 PM PST THU JAN 22 2015

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS CANCELLED
THE WIND ADVISORY.

WINDS ACROSS THE REGION HAVE DIMINISHED TO BELOW CRITERIA AND
THEREFORE THE WIND ADVISORY HAS BEEN CANCELLED. WINDS WILL REMAIN
LOCALLY STRONG AND GUSTY INTO THE AFTERNOON... ESPECIALLY IN AND
NEAR PASSES AND CANYONS AND ACROSS RIDGETOPS. TRAVELERS SHOULD
REMAIN PREPARED FOR POTENTIAL CROSSWINDS IN PARTICULAR.

$$
KJ/DS

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
316 AM PST THU JAN 22 2015

.SYNOPSIS...
HIGH PRESSURE AND OFFSHORE FLOW WILL BRING MOSTLY CLEAR SKIES TO THE
REGION THROUGH THE WEEKEND...WITH ABOVE NORMAL DAYTIME TEMPERATURES.
IT WILL BE BREEZY TO LOCALLY WINDY...ESPECIALLY THIS MORNING AND
AGAIN SATURDAY. LOW PRESSURE MOVING TOWARD THE REGION FROM THE
SOUTHWEST WILL BRING INCREASING CLOUDS AND COOLER WEATHER MONDAY...
WITH A CHANCE OF RAIN MONDAY NIGHT THROUGH WEDNESDAY.

&&

.SHORT TERM (TODAY-SAT)...EXCEPT FOR SOME LOW CLOUDS AND FOG ACROSS
INTERIOR SECTIONS OF SLO AND SBA COUNTIES...SKIES WERE MOSTLY CLEAR
ACROSS THE REGION EARLY THIS MORNING. ANY LOW CLOUDS SHOULD
DISSIPATE BY MID OR LATE MORNING. SKIES WILL GENERALLY BE MOSTLY
SUNNY TODAY...ALTHOUGH HIGH CLOUDS MAY DIM THE SUNSHINE FROM TIME TO
TIME...ESPECIALLY N OF PT CONCEPTION. OFFSHORE PRES GRADIENT AND
SOME WEAK TO MODERATE SUBSIDENCE HAVE CAUSED SOME GUSTY WINDS TO
DEVELOP IN THE MTNS OF VTU AND L.A. COUNTIES INCLUDING THE SANTA
MONICA RANGE...AND IN THE SANTA CLARITA VALLEY. WINDS WERE MOSTLY
JUST BELOW ADVISORY LEVELS...BUT WITH AN EXPECTED SMALL BUMP UP IN
WINDS AROUND SUNRISE...HAVE GONE AHEAD AND ISSUED WIND ADVISORIES
FOR THESE AREAS. EXPECT GUSTY WINDS TO PUSH INTO THE SAN FERNANDO
VALLEY...THE VTU COUNTY VALLEYS AND COASTAL PLAIN...AND THE L.A.
COUNTY COAST BELOW PASSES AND CANYONS FROM MALIBU TO THE HOLLYWOOD
HILLS AROUND SUNRISE AND CONTINUE THROUGH EARLY AFTERNOON.
HOWEVER...IN THESE AREAS...EXPECT WINDS TO REMAIN BELOW ADVISORY
LEVELS FOR THE MOST PART. MAX TEMPS WILL LIKELY BE UP A FEW DEGREES
IN MOST AREAS W OF THE MTNS TODAY...WITH THE BEST WARMING ACROSS
IMMEDIATE COASTAL SECTIONS OF L.A. AND VTU COUNTIES. THIS SHOULD PUT
MAX TEMPS 5 TO 10 DEGREES ABOVE NORMAL IN MOST COASTAL AND VALLEY
AREAS TODAY...WITH HIGHS APPROACHING 80 DEGREES IN THE WARMEST
LOCATIONS.

A WEAK SHORT WAVE TROUGH WILL DROP SWD THROUGH CA LATER TODAY AND
TONIGHT...EVOLVING INTO A CLOSE UPPER LOW OVER NORTHERN BAJA FRI.
AT THE SFC...LOW LEVEL GRADIENTS WILL REMAIN OFFSHORE. SKIES WILL
REMAIN MOSTLY CLEAR. THERE WILL LIKELY BE SOME GUSTY NE WINDS AGAIN
LATE TONIGHT/FRI MORNING...BUT WINDS SHOULD REMAIN BELOW ADVISORY
LEVELS. MAX TEMPS ON FRI SHOULD BE SIMILAR TO THOSE REACHED TODAY.

UPPER LEVEL HIGH PRESSURE WILL BUILD INTO NRN CA FRI NIGHT AND SAT.
AS THIS OCCUR...THE HEIGHT GRADIENT WILL SHARPEN ALOFT...AND NELY
FLOW WILL INCREASE FROM 850 MB THROUGH 500 MB OVER SRN CA FRI NIGHT
AND SAT. AT THE SAME TIME...SFC HIGH PRESSURE WILL BUILD INTO THE
SRN GREAT BASIN...CAUSING OFFSHORE SFC PRESSURE GRADIENTS ACROSS SRN
CA TO BECOME INCREASINGLY OFFSHORE. THE COMBINATION OF STRONGER
OFFSHORE GRADIENTS AND BETTER UPPER LEVEL SUPPORT WILL LIKELY
BRING DECENT ADVISORY LEVEL NE WINDS TO MUCH OF LOS ANGELES AND
VENTURA COUNTIES LATE FRI NIGHT AND SAT. IN FACT...WIND GUSTS WILL
PROBABLY APPROACH HIGH WIND WARNING LEVELS IN SOME MOUNTAIN AREAS.
WIND ADVISORIES WILL ALMOST CERTAINLY BE NEEDED FOR MUCH OF L.A. AND
VTU COUNTIES. WITH GOOD RISES IN HEIGHTS AND THICKNESSES ON
SAT...EXPECT SOME WARMING...ESPECIALLY W OF THE MTNS...WITH MAX
TEMPS LIKELY INTO THE LOWER 80S ACROSS PORTIONS OF THE COASTAL
PLAIN.

.LONG TERM (SUN-WED)...GOOD OFFSHORE GRADIENTS WILL CONTINUE
SUNDAY...BUT UPPER LEVEL WIND SUPPORT WILL BE WEAKER AS THE UPPER
LOW OVER NRN BAJA CONTINUES TO DROP SOUTHWESTWARD. STILL...ADVISORY
LEVEL WINDS ARE POSSIBLE IN THE MORE WIND FAVORED LOCATIONS. CONTD
RISE IS HEIGHTS AND THICKNESSES WILL PROBABLY ALLOW MAX TEMPS TO
RISE A COUPLE MORE DEGREES ON SUNDAY...ALTHOUGH THERE IS A SMALL
CHANCE OF SOME SLIGHT COOLING RIGHT AT THE BEACHES. EXCEPT FOR SOME
HIGH CLOUDS...SUNDAY SHOULD BE SUNNY. THE UPPER LOW WILL CONTINUE TO
SPIN WELL TO THE W OF CENTRAL BAJA SUNDAY NIGHT AND MON...WHILE THE
UPPER HIGH OVER NRN CA SHIFTS INTO THE GREAT BASIN. MODELS SHOW A
DECENT SURGE OF MID AND HIGH LEVEL MOISTURE INTO THE REGION ON
MONDAY...SO EXPECT CLOUDS TO INCREASE. WITH THE ADDED
CLOUDINESS...WEAKENING OFFSHORE GRADIENTS AND FALLING
HEIGHTS...EXPECT SIGNIFICANT COOLING IN MOST AREAS ON MONDAY. BEYOND
MONDAY...THERE IS A FAIR AMOUNT OF DISAGREEMENT BETWEEN THE
MODELS...BUT THE GENERAL IDEA IS THAT A TROUGH MOVING INTO THE ERN
PACIFIC WILL FORCE THE UPPER LOW OFF BAJA...AND ITS MOISTURE...
NORTHWARD MON NIGHT AND TUE...BRINGING A CHANCE OF RAIN OR SHOWERS
TO THE REGION. THERE COULD BE A BIT OF A BREAK...THEN THERE WOULD BE
ANOTHER CHANCE OF RAIN WITH THE TROUGH MOVING THROUGH THE ERN
PACIFIC. WITH SO MANY TIMING AND MOISTURE DIFFERENCES BETWEEN THE
MODELS...WILL JUST GO WITH A CHANCE OF RAIN MON NIGHT THROUGH
WED...WITH DAYTIME TEMPS DOWN TO NEAR NORMAL LEVELS.

&&

.AVIATION...22/1030Z...

AT 0955Z...THERE WAS A SURFACE-BASED INVERSION AT KLAX. THE TOP OF
THE INVERSION WAS 1400 FEET WITH A TEMPERATURE OF 19 DEGREES
CELSIUS.

OVERALL...DEVELOPING NORTH TO NORTHEAST FLOW WILL KEEP MOST SITES
VFR THRU THE PERIOD. ONLY EXCEPTIONS WILL BE KPRB AND KLGB WHERE
SOME MVFR VSBYS WILL LIKELY LINGER THRU 16Z. WITH NORTHEASTERLY
FLOW...LLWS/TURBULENCE WILL BE LIKELY IN THE VALLEYS AND MOUNTAIN
PASSES THRU THIS AFTERNOON.

KLAX...HIGH CONFIDENCE IN 12Z TAF. NORTH-NORTHEAST WINDS NEAR
6 KNOTS WILL CONTINUE THRU THIS MORNING.

KBUR...HIGH CONFIDENCE IN 12Z TAF. MODERATE LLWS/TURBULENCE IS
LIKELY THRU EARLY THIS AFTERNOON.

&&

.MARINE...22/200 AM PST...

FOR THE OUTER WATERS...HIGH CONFIDENCE IN WINDS REMAINING BELOW
SMALL CRAFT ADVISORY LEVELS THROUGH SUNDAY.

FOR THE INNER WATERS...NORTHEAST FLOW WILL DEVELOP TODAY AND
CONTINUE THROUGH SUNDAY. FOR TODAY...THE STRONGEST WINDS ARE
EXPECTED NEAR SHORE FROM POINT MUGU TO SANTA MONICA...AND THERE
IS A 40% OF SMALL CRAFT ADVISORY NORTHEAST WIND GUSTS. FOR TONIGHT
AND FRIDAY...HIGH CONFIDENCE IN NORTHEAST WINDS REMAINING BELOW
SMALL CRAFT ADVISORY LEVELS. FOR LATE FRIDAY NIGHT/SATURDAY...THERE
IS MODERATE CONFIDENCE IN SMALL CRAFT ADVISORY-LEVEL NORTHEAST
WINDS FROM VENTURA SOUTH TO SANTA MONICA...AS WELL AS SOUTH OF
PALOS VERDES (INCLUDING CATALINA ISLAND)...WITH THE SMALL CRAFT
ADVISORY POSSIBLY CONTINUING INTO SUNDAY.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY (SEE LAXNPWLOX).

&&

PUBLIC...DB
AVIATION/MARINE...RAT
SYNOPSIS...DB

WWW.WEATHER.GOV/LOSANGELES

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
600 AM PST WED JAN 21 2015

CAZ034>041-044>046-051>054-059-087-088-547-548-221400-
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-
600 AM PST WED JAN 21 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY AND TONIGHT

PATCHY DENSE FOG WILL REDUCE VISIBILITIES TO ONE QUARTER MILE OR
LESS THROUGH MID MORNING ACROSS THE VALLEYS OF LOS ANGELES AND
VENTURA COUNTIES...THE INTERIOR VALLEYS OF SAN LUIS OBISPO AND SANTA
BARBARA COUNTY AND THE SANTA YNEZ VALLEY.

THERE WILL BE A HIGH RISK OF RIP CURRENTS ON ALL AREA BEACHES TODAY.

LOCALLY GUSTY NORTHEAST WINDS WILL AFFECT THE MOUNTAINS AND VALLEYS
OF VENTURA AND LOS ANGELES COUNTIES AND THE VENTURA COUNTY COASTAL
PLAIN THROUGH EARLY AFTERNOON.

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

.DAYS TWO THROUGH SEVEN... THURSDAY THROUGH TUESDAY

GUSTY NORTHEAST WINDS WILL AFFECT THE MOUNTAINS AND VALLEYS OF
VENTURA AND LOS ANGELES COUNTIES AND THE VENTURA COUNTY COASTAL
PLAIN AT TIMES THURSDAY THROUGH SUNDAY...WITH WINDS POSSIBLY
REACHING ADVISORY LEVELS THURSDAY AND SATURDAY. GUSTY WINDS AND VERY
LOW HUMIDITIES WILL INCREASE FIRE DANGER...ESPECIALLY BY SATURDAY.

.SPOTTER INFORMATION STATEMENT...

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