Wind Advisory 52, NWS Los Angeles, CA

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
950 AM PDT FRI JUN 6 2014

.SYNOPSIS...

TEMPERATURES WILL REMAIN NEAR NORMAL TODAY AS A WEAK UPPER LEVEL LOW
MOVES ACROSS THE REGION TODAY AND TONIGHT. A RIDGE OF HIGH PRESSURE
WILL BEGIN TO DEVELOP ON SATURDAY...BRINGING ABOVE NORMAL
TEMPERATURES THROUGH MONDAY...ESPECIALLY FOR INTERIOR AREAS. LOW
PRESSURE WILL APPROACH ON MONDAY...RESULTING IN NEAR NORMAL
TEMPERATURES BY MID TO LATE WEEK.

&&

.UPDATE...

STRONG ONSHORE FLOW REMAINS IN PLACE ACROSS THE AREA FROM A
TROUGH OF LOW PRESSURE. ONSHORE GRADIENTS ARE TRENDING MORE THAN
2.5 MB ONSHORE THAN THIS TIME YESTERDAY. IF LINEAR EXTRAPOLATION
IS CORRECT...KLAX-KDAG SURFACE PRESSURE GRADIENTS SHOULD SURGE TO
NEAR 9 MB ONSHORE THIS AFTERNOON. WITH PRESSURE GRADIENTS THIS
TIGHT...STRONG AND GUSTY WINDS SHOULD DEVELOP IN THE ANTELOPE
VALLEY AND A WIND ADVISORY WILL BE ADDED TO THE PACKAGE. PARTIAL
AFTERNOON CLEARING WILL ALSO BE ADDED TO THE PACKAGE TO REFLECT A
MORE JUNE GLOOM TYPE OF PATTERN.

WITH THE STRONGER ONSHORE FLOW AND STRONGER SOUTHWEST WINDS FOR
THE SAN LUIS OBISPO INTERIOR VALLEYS...TEMPERATURES WERE COOLED
SLIGHTLY FOR LOCALITIES SUCH AS PASO ROBLES.

&&

.PREV DISCUSSION...

SHORT TERM...THE UPPER LOW WILL MOVE EAST OF THE REGION TONIGHT
AND EARLY SAT...BUT A BROAD POSITIVELY TILTED TROUGH WILL SLIDE
SOUTHEASTWARD THROUGH CA ON SAT. THE MARINE LAYER DEPTH SHOULD NOT
CHANGE TOO MUCH...AND EXPECT NIGHT THROUGH MORNING LOW CLOUDS AND
FOG IN ALL COASTAL AND MANY VALLEY AREAS TONIGHT/SAT MORNING. MAX
TEMPS SHOULD BE UP SLIGHTLY IN THE VLYS...AND MORE SIGNIFICANTLY
IN THE MTNS AND DESERTS AS TEMPS AT 850 MB AND 950 MB RISE A FEW
DEGREES.

THE WEAK UPPER LOW WILL MOVE E OF THE REGION SAT NIGHT AND SUN...AND
AN UPPER HIGH WILL BUILD INTO THE AREA FROM THE SOUTH. THE MARINE
LAYER SHOULD BECOME MORE SHALLOW...AND NIGHT THROUGH MORNING LOW
CLOUDS SHOULD BE CONFINED TO THE COASTAL PLAIN...WITH SOME CLOUDS
POSSIBLY PUSHING INTO THE LOWEST VLYS. RISING HEIGHTS AND
THICKNESSES...AND DECENT WARMING AT 850 MB AND 950 MB SHOULD ALLOW
FOR SEVERAL DEGREES OF WARMING ON SUNDAY...AT LEAST ACROSS THE
VLYS...MTNS AND DSRTS...WITH LESS WARMING ACROSS THE COASTAL
PLAIN...ESPECIALLY NEAR THE COAST.

LONG TERM...A WEAK UPPER LOW WILL APPROACH THE WEST COAST MONDAY.
THE MARINE LAYER MAY DEEPEN A BIT...AND THERE MAY BE SLIGHT
COOLING...MAINLY ACROSS COASTAL AND VALLEY AREAS. THE UPPER LOW
WILL SWING JUST TO THE NORTH OF THE FORECAST AREA MON NIGHT AND
TUE. THE MARINE LAYER WILL DEEPEN...AND NIGHT THROUGH MORNING LOW
CLOUDS SHOULD BE WIDESPREAD IN ALL COASTAL AND MOST VALLEY AREAS.
EXPECT SEVERAL DEGREES OF COOLING ON TUE...ESPECIALLY IN THE
VALLEYS...MTNS AND DESERTS. THE UPPER LOW WILL MOVE EAST OF THE
REGION TUE NIGHT. AN UPPER LOW WILL MOVE TOWARD THE PAC NW WED AND
THU...WITH A BROAD TROUGH EXTENDING SOUTHWARD INTO THE REGION.
THIS SHOULD KEEP THE MARINE LAYER REASONABLY...BUT NOT
EXCESSIVELY...DEEP. EXPECT WIDESPREAD NIGHT THROUGH MORNING LOW
CLOUDS AND FOG TO CONTINUE IN COASTAL AND MOST VALLEY AREAS. MAX
TEMPS MAY LOWER A BIT MORE ON WED...THEN CHANGE LITTLE FOR THU.

&&

.AVIATION...05/1145Z.

N OF POINT CONCEPTION...WIDESPREAD STRATUS IN ALL COASTAL SECTIONS
AND THE SANTA YNEZ VALLEY THIS MORNING. CONDITIONS WERE GENERALLY
IFR/LIFR. EXPECT SKIES TO CLEAR BY MID OR LATE MORNING IN MOST
AREAS.

S OF POINT CONCEPTION...
THE VLYS WILL SEE A BIT MORE EXTENSIVE COVERAGE OF IFR CIGS THIS
MORNING...BUT CLEAR BY 16Z IN MOST INLAND AREAS. OTHERWISE...A
SIMILAR STRATUS PATTERN TO YESTERDAY ACROSS COASTAL SECTIONS WITH
THE EXCEPTION OF MORE EXTENSIVE STRATUS COVERAGE ACROSS LA COUNTY
COASTAL AREAS THIS MORNING. 30 PERCENT CHANCE FOR CIGS TO BURNOFF
ACROSS COASTAL TAFS AN HOUR LATER THEN 12Z TAFS SUGGEST. GUSTY SW TO
W WINDS WILL AFFECT THE ANTELOPE VALLEY THIS AFTERNOON.

KLAX...MODERATE CONFIDENCE IN THE 12Z TAF. THERE IS A 30 PERCENT
CHANCE THAT CIGS WILL LINGER THROUGH 20Z.

KBUR...MODERATE CONFIDENCE IN THE 12Z TAF THRU 16Z THAN HIGH
CONFIDENCE WITH VFR CONDS THROUGH AT LEAST 09Z.

&&

.MARINE...06/900 AM.
OUTER WATERS...MODERATE CONFIDENCE WITH SMALL CRAFT ADVISORY LEVEL
WINDS WITH GUSTS TO BETWEEN 25 AND 30 KNOTS FOR PZZ673/676 THROUGH
AT LEAST EARLY SATURDAY MORNING...AND POSSIBLY THROUGH SUNDAY
MORNING. STRONGEST GUSTS SHOULD OCCUR BETWEEN POINT CONCEPTION TO
SAN NICOLAS ISLAND. WEAKER WINDS ARE LIKELY SUNDAY AND MONDAY.

INNER WATERS...FOR THE WESTERN PORTION OF PZZ650...LOCAL GUSTS TO 20
KT FAR WESTERN PORTION LATE THIS AFTERNOON AND EVENING.
OTHERWISE...HIGH CONFIDENCE IN FAIRLY CHOPPY SEAS THROUGH EARLY
SUNDAY DUE TO GUSTY WINDS OVER THE OUTER WATERS.

&&

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

&&

PUBLIC...HALL/DB
AVIATION...KAPLAN
MARINE...KITTELL
SYNOPSIS...SUKUP

WWW.WEATHER.GOV/LOSANGELES

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
100 PM PDT THU JUN 5 2014

CAZ034>041-044>046-051>054-059-087-088-547-548-061300-
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-
100 PM PDT THU JUN 5 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY AND TONIGHT
GUSTY NORTHWESTERLY WINDS WILL BRING HAZARDOUS DRIVING CONDITIONS TO
PEOPLE TRAVELING IN HIGH PROFILE VEHICLES IN SOUTHWEST SANTA BARBARA
COUNTY.

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

.DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY

GUSTY SOUTHWEST WINDS WITH LOCAL GUSTS TO 45 MPH COULD BRING
HAZARDOUS DRIVING CONDITIONS TO PORTIONS OF THE ANTELOPE VALLEY
FRIDAY AFTERNOON AND EVENING...WITH POSSIBLE REDUCED VISIBILITIES
FROM BLOWING DUST.

.SPOTTER INFORMATION STATEMENT...

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

CK/RK