[californiadisasters] Santa Ana Wind Bulletin (10/24/11-AM)

...MODERATE SANTA ANA WINDS WITH VERY LOW HUMIDITIES EXPECTED
LATE WEDNESDAY THROUGH FRIDAY...

HIGH PRESSURE WILL BUILD INTO THE GREAT BASIN ON WEDNESDAY...
RESULTING IN INCREASING OFFSHORE FLOW OVER SOUTHWESTERN CALIFORNIA
 FROM WEDNESDAY AFTERNOON THROUGH THURSDAY. GUSTY NORTHEAST CANYON
WINDS ARE EXPECTED THROUGH AND BELOW THE FAVORED PASSES AND CANYONS
OF VENTURA AND LOS ANGELES COUNTIES...WHERE SOME AREAS MAY HAVE
ADVISORY LEVEL WIND GUSTS BETWEEN 40 AND 50 MPH. BY THURSDAY NIGHT
 AND FRIDAY...OFFSHORE FLOW WILL PERSIST BUT THE NORTHEAST WINDS
WILL NOT BE QUITE AS STRONG.

THE OFFSHORE FLOW WILL IMPORT VERY DRY AIR INTO THE REGION AS WELL.
ON WEDNESDAY...AFTERNOON RELATIVE HUMIDITY WILL FALL IN THE LOW
 TEENS AND SINGLE DIGITS ACROSS THE MOUNTAINS. THESE LOW RELATIVE
HUMIDITIES WILL THEN SPREAD INTO THE FOOTHILLS AND VALLEYS ON
THURSDAY AND FRIDAY. THE OFFSHORE WINDS WILL RESULT IN VERY POOR
OVERNIGHT RELATIVE HUMIDITY RECOVERY. THE LOW HUMIDITIES COMBINED
 WITH GUSTY CANYON WINDS LATE WEDNESDAY THROUGH FRIDAY MORNING WILL
RESULT IN HEIGHTENED FIRE WEATHER CONCERNS. THERE WILL BE THE
POTENTIAL FOR RED FLAG CONDITIONS DURING THE PERIOD...ESPECIALLY
FOR THE MOUNTAINS OF VENTURA AND LOS ANGELES COUNTIES INCLUDING
 THE SANTA MONICA RANGE...AND THE SANTA CLARITA VALLEY. A FIRE
WEATHER WATCH MAY EVENTUALLY BE NEEDED FOR THESE AREAS AS WE
DRAW CLOSER TO THE EVENT.

AS THE OFFSHORE FLOW DEVELOPS...A WARMING TREND CAN BE EXPECTED
 WEDNESDAY THROUGH FRIDAY...BUT HOT CONDITIONS ARE NOT ANTICIPATED.
THE MOST NOTICEABLE WARMING WILL OCCUR ON THURSDAY AND FRIDAY WITH
MANY COASTAL AND VALLEY AREAS IN THE UPPER 70S TO MID 80S.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE
 LATEST UPDATES ON THIS SITUATION.

$$

SIRARD/RAT/KAPLAN

Source: http://forecast.weather.gov/wwamap/wwatxtget.php?cwa=lox&wwa=special%20weather%20statement

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