Fire Weather Watch

The National Weather Service has issued a High Wind Watch and Fire Weather Watch (see below) for Wednesday evening through late Friday afternoon:

Fire Weather Watch
URGENT – FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
948 AM PST TUE NOV 29 2011

…FIRE WEATHER WATCH IN EFFECT FROM LATE WEDNESDAY EVENING THROUGH
LATE FRIDAY AFTERNOON OVER LOS ANGELES AND VENTURA COUNTIES FOR VERY
STRONG NORTHEAST WINDS AND LOW RELATIVE HUMIDITY…

.A COLD LOW PRESSURE SYSTEM WILL MOVE OVER ARIZONA AND GENERATE
STRONG NORTHEAST SANTA ANA WINDS OVER MOST OF LOS ANGELES AND
VENTURA COUNTIES LATE WEDNESDAY EVENING THROUGH MOST OF FRIDAY.
PEAK SUSTAINED WINDS ARE EXPECTED TO EXCEED 40 MPH OVER MUCH OF
THE AREA…WITH PEAK WIND GUSTS LIKELY EXCEEDING 60 MPH. THESE
WINDS WILL ALSO HELP TO MAINTAIN LOW HUMIDITY
READINGS…ESPECIALLY OVER THE COASTS AND VALLEYS. ALTHOUGH THESE
WINDS SHOULD WEAKEN BY FRIDAY EVENING…THE POTENTIAL EXISTS FOR
ADDITIONAL ROUNDS OF GUSTY NORTHEAST WINDS OVER THE WEEKEND.

CAZ240-241-244>246-288-547-548-300200-
/O.NEW.KLOX.FW.A.0007.111201T0600Z-111203T0200Z/
VENTURA COUNTY COAST-
LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES-
VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS-
SANTA MONICA MOUNTAINS RECREATIONAL AREA-SANTA CLARITA VALLEY-
LOS ANGELES COUNTY SAN FERNANDO VALLEY-
LOS ANGELES COUNTY SAN GABRIEL VALLEY-
948 AM PST TUE NOV 29 2011

…FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH
FRIDAY AFTERNOON FOR STRONG NORTHEAST WINDS AND LOW RELATIVE
HUMIDITY FOR THE COASTS AND VALLEYS OF LOS ANGELES AND VENTURA
COUNTIES AS WELL AS THE SANTA MONICA MOUNTAINS…

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A
FIRE WEATHER WATCH FOR WIND AND LOW RELATIVE HUMIDITY…WHICH IS
IN EFFECT FROM WEDNESDAY EVENING THROUGH FRIDAY AFTERNOON.

* WINDS…AREAS OF NORTHEAST 25 TO 45 MPH WITH GUSTS TO 65 MPH.

* RELATIVE HUMIDITY…LOWERING TO 10 TO 15 PERCENT.

* IMPACTS…THE COMBINATION OF VERY STRONG WINDS AND LOW RELATIVE
HUMIDITY…AS WELL AS SUFFICIENTLY DRY FUELS SHOULD RESULT IN
FAVORABLE CONDITIONS FOR RAPID FIRE GROWTH IF FIRE IGNITION
OCCURS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. PLEASE ADVISE THE APPROPRIATE OFFICIALS OR
FIRE CREWS IN THE FIELD OF THIS FIRE WEATHER WATCH. LISTEN FOR
LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS.

High Wind Watch
URGENT – WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
832 AM PST TUE NOV 29 2011

…VERY STRONG SANTA ANA WIND EVENT POSSIBLE THURSDAY AND
FRIDAY…

.A COLD LOW PRESSURE SYSTEM WILL MOVE DOWN THE CALIFORNIA NEVADA
STATE LINE OVERNIGHT WEDNESDAY. AT THE SAME TIME STRONG SURFACE
HIGH PRESSURE WILL BUILD INTO THE GREAT BASIN. THERE IS A GOOD
CHANCE THAT THESE TWO SYSTEMS WILL ALIGN IN A WAY FAVORABLE FOR A
VERY STRONG OFFSHORE WIND EVENT STARTING LATER WEDNESDAY NIGHT
AND LASTING INTO FRIDAY AFTERNOON. PEOPLE IN THE WATCH AREA
SHOULD MONITOR THE LATEST WEATHER FORECASTS FOR MORE INFORMATION
ON THIS POTENTIALLY DAMAGING WIND EVENT.

CAZ547-548-300045-
/O.CON.KLOX.HW.A.0012.111201T0300Z-111202T2300Z/
LOS ANGELES COUNTY SAN FERNANDO VALLEY-
LOS ANGELES COUNTY SAN GABRIEL VALLEY-
INCLUDING THE CITIES OF…WOODLAND HILLS…NORTHRIDGE…BURBANK…
UNIVERSAL CITY…PASADENA…SAN GABRIEL…POMONA
832 AM PST TUE NOV 29 2011

…HIGH WIND WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING
THROUGH FRIDAY AFTERNOON…

* WINDS AND TIMING…NORTHEAST CANYON WINDS WILL INCREASE
OVERNIGHT WEDNESDAY…PEAK IN INTENSITY THURSDAY MORNING…
DIMINISH A LITTLE THURSDAY AFTERNOON AND EVENING…AND THEN WILL
RE-INTENSIFY FRIDAY MORNING. PEAK WIND GUSTS OF 60 MPH WILL BE
POSSIBLE BELOW FAVORED PASSES AND CANYONS.

* IMPACTS…WIND GUSTS THIS STRONG WILL BE ABLE TO TOPPLE TREES
AND POWER LINES…BLOW OVER UNSECURED OUTDOOR OBJECTS SUCH AS
LAWN FURNITURE…AND CREATE HAZARDOUS CROSS WINDS FOR HIGHER
PROFILE VEHICLES.

CONTINUE TO MONITOR THE LATEST FORECASTS.

A HIGH WIND WATCH MEANS THERE IS THE POTENTIAL FOR A HAZARDOUS
HIGH WIND EVENT. SUSTAINED WINDS OF AT LEAST 40 MPH…OR GUSTS OF
58 MPH OR STRONGER MAY OCCUR. CONTINUE TO MONITOR THE LATEST
FORECASTS.

Confidentiality Notice: The information contained in this e-mail message and any attachment(s) is the property of the County of Los Angeles and may be protected by County, State and Federal laws governing disclosure of private information. It is intended solely for the use of the entity to whom this e-mail is addressed. If you are not the intended recipient, you are hereby notified that reading, copying or distribution of this transmission is STRICTLY PROHIBITED. The sender has not waived any applicable privilege by sending the accompanying transmission. If you have received this transmission in error, please notify the sender by returning the e-mail, and delete the message and attachment(s) from your system. Thank you.

Loading...