NPWLAX
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
630 AM PDT TUE JUN 12 2001

...WIND ADVISORIES ARE IN EFFECT FOR THE MOUNTAINS OF LOS ANGELES...
   VENTURA AND SANTA BARBARA COUNTIES...AND FOR THE ANTELOPE VALLEY...

.SURFACE HIGH PRESSURE BUILDING INTO NORTHERN CALIFORNIA THIS MORNING
HAS CAUSED A SHARP NORTH TO SOUTH PRESSURE GRADIENT ACROSS THE STATE.
GUSTY NORTHWEST WINDS WERE ALREADY BEING REPORTED IN THE MOUNTAINS OF
LOS ANGELES...VENTURA AND SANTA BARBARA COUNTIES...AND IN THE ANTELOPE
VALLEY.

AS A STRONG UPPER LOW IN THE PACIFIC NORTHWEST DROPS SOUTHEASTWARD INTO
THE NORTHERN GREAT BASIN TODAY AND TONIGHT...WINDS IN THE ATMOSPHERE
ABOVE CALIFORNIA WILL BECOME MORE NORTHERLY AND INCREASE. AS A
RESULT...WINDS ARE EXPECTED TO STRENGTHEN AND BECOME MORE WIDESPREAD
ACROSS THE MOUNTAINS AND IN THE ANTELOPE VALLEY TODAY. WIND SPEEDS ARE
EXPECTED TO AVERAGE 30 TO 40 MPH ACROSS THE ADVISORY AREA TODAY...WITH
LOCAL GUSTS TO 60 MPH LIKELY.

STRONG WINDS ARE EXPECTED TO DEVELOP ALONG THE CENTRAL COAST OF SAN
LUIS OBISPO AND SANTA BARBARA COUNTIES THIS AFTERNOON...AND BELOW
PASSES AND CANYONS OF SOUTH COASTAL SANTA BARBARA COUNTY THIS EVENING
AND EARLY TONIGHT. WIND ADVISORIES MAY HAVE TO BE ISSUED FOR THOSE
AREAS LATER TODAY.

MOTORISTS...ESPECIALLY THOSE WITH HIGH PROFILE VEHICLES AND VEHICLES
TOWING TRAILER...SHOULD USE CAUTION WHILE TRAVELING IN THE ADVISORY
AREA TODAY. MAINTAIN A FIRM GRIP ON THE STEERING WHEEL...AND BE
PREPARED FOR SUDDEN STRONG CROSS WINDS. BE PREPARED FOR AREAS OF
BLOWING DUST AND SAND IN THE ANTELOPE VALLEY...WHICH MAY REDUCE
VISIBILITIES TO NEAR ZERO AT TIMES.

CAZ053-054-121630-
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-

...A WIND ADVISORY IS IN EFFECT UNTIL NOON WEDNESDAY...

FOR AREAS OF NORTHWEST TO NORTH WINDS 30 TO 45 MPH WITH LOCAL
GUSTS OVER 60 MPH. WINDS WILL DIMINISH BY WEDNESDAY AFTERNOON.

$$

CAZ052-121630-
SANTA BARBARA COUNTY MOUNTAINS-

...A WIND ADVISORY IS IN EFFECT UNTIL NOON WEDNESDAY...

FOR AREAS OF NORTHWEST TO NORTH WINDS 30 TO 40 MPH WITH LOCAL
GUSTS OVER 60 MPH BECOMING WIDESPREAD THIS AFTERNOON AND
CONTINUING TONIGHT. WINDS WILL DIMINISH BY WEDNESDAY AFTERNOON.

$$

CAZ059-121630-
ANTELOPE VALLEY-

...A WIND ADVISORY IS IN EFFECT UNTIL 9 PM...

FOR AREAS OF WEST TO NORTHWEST WINDS 30 TO 40 MPH WITH LOCAL GUSTS TO
55 MPH BECOMING WIDESPREAD THIS AFTERNOON...AND CONTINUING THIS
EVENING. WINDS WILL SLOWLY DIMINISH TONIGHT. THERE WILL BE AREAS OF
BLOWING DUST AND SAND WHICH MAY REDUCE VISIBILITIES TO NEAR ZERO AT
TIMES.

$$

SOME WIND REPORTS FROM 6 AM...

CAMP NINE (ANGELES NATIONAL FOREST).....NORTHWEST 20 GUSTING TO 35 MPH.
WARM SPRINGS............................NORTHWEST 23 GUSTING TO 42 MPH.
LANCASTER....................................WEST 30 GUSTING TO 38 MPH.
POPPY PARK...................................WEST 23 GUSTING TO 37 MPH.

$$

BRUNO




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[LAXNPWLAX/992352331]

EDIS-06-12-01 0625 PDT


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