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Thursday, August 27, 2009

Red Flag Warning in Effect


...RED FLAG WARNING IN EFFECT FROM 6 AM WEDNESDAY TO 9 PM PDT
FRIDAY FOR THE MOUNTAINS OF LOS ANGELES...VENTURA...SANTA BARBARA...
AND SAN LUIS OBISPO COUNTIES DUE TO LOW HUMIDITIES AND HOT TEMPERATURES...
.A STRONG UPPER LEVEL HIGH PRESSURE SYSTEM WILL BUILD OVER THE
SOUTHWEST STATES THROUGH FRIDAY. THIS IN COMBINATION WITH WEAKENING
ONSHORE FLOW WILL RESULT IN CONTINUED WARMING AND DRYING DURING
THE NEXT FEW DAYS. DRY AIR HAS ALREADY SETTLED IN ACROSS THE REGION
TODAY...WITH SINGLE DIGIT HUMIDITIES ALREADY BEING OBSERVED ACROSS
MANY MOUNTAIN LOCATIONS. EVEN DRIER AIR IS ANTICIPATED TO SETTLE
IN ACROSS SOUTHERN CALIFORNIA THE NEXT FEW DAYS...WITH LONGER
PERIODS OF SINGLE DIGIT HUMIDITIES EXPECTED FOR THE MOUNTAINS...ALONG
WITH VERY POOR OVERNIGHT RECOVERIES. THE COMBINATION OF LONG
DURATION SINGLE DIGIT HUMIDITIES...HOT TEMPERATURES...AND
CRITICALLY DRY FUELS HAS PROMPTED THE ISSUANCE OF THE RED FLAG
WARNING FOR THE MOUNTAINS OF SOUTHWEST CALIFORNIA.
VALLEY LOCATIONS ARE ALSO EXPECTED TO EXPERIENCE PERIODS OF SINGLE
DIGIT HUMIDITIES DURING THE NEXT FEW DAYS...BUT ARE NOT EXPECTED
TO REACH CRITICAL DURATION THRESHOLDS FOR RED FLAG WARNINGS AT
THIS TIME.

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