Red Flag Warning 1, NWS Las Vegas, NV

000 
WWUS85 KVEF 032211
RFWVEF

RED FLAG WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
211 PM PST SAT MAR 3 2007

...RED FLAG WARNING IN EFFECT UNTIL 7 PM PST /8 PM MST/ THIS
EVENING FOR GUSTY WINDS TO NEAR 40 MPH COMBINED WITH LOW RELATIVE
HUMIDITY FOR AREAS ALONG THE COLORADO RIVER VALLEY...

.A STRONG SURFACE HIGH PRESSURE SYSTEM BUILDING OVER NORTHERN
UTAH ALONG WITH LOW PRESSURE OFF THE SOUTHERN CALIFORNIA COAST
WILL COMBINED TO PRODUCE BREEZY TO LOCALLY WINDY CONDITIONS
ACROSS SOUTHERN NEVADA AND NORTHWEST ARIZONA THROUGH EARLY
EVENING. THESE WINDS WILL BE FOCUSED ALONG THE COLORADO RIVER
VALLEY...ESPECIALLY SOUTH OF THE DAM AND ALONG ANY NORTH SOUTH
ORIENTED CANYONS AND CHANNELS. THE WINDS WILL SUBSIDE AROUND
SUNSET.

AZZ101-CAZ229-NVZ466-040300-
/O.CON.KVEF.FW.W.0001.000000T0000Z-070304T0300Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
211 PM PST SAT MAR 3 2007 /311 PM MST SAT MAR 3 2007/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM PST /8 PM MST/
THIS EVENING...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM PST /8 PM MST/
THIS EVENING. 

NORTH WINDS OF 20 TO 30 MPH WITH GUSTS TO AROUND 40 MPH WILL 
CONTINUE THROUGH EARLY EVENING BEFORE SUBSIDING AROUND SUNSET.
THESE WINDS...ALONG WITH RELATIVE HUMIDITY VALUES OF LESS THAN 15
PERCENT AND VERY HIGH TO LOCALLY EXTREME FIRE DANGER...WILL
CAUSE POSSIBLE HAZARDOUS AND ERRATIC FIRE BEHAVIOR THROUGH EARLY
EVENING. 

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...AND LOW RELATIVE HUMIDITY...WILL CREATE EXPLOSIVE FIRE
GROWTH POTENTIAL.

$$

MORGAN

000 
WWUS85 KVEF 040259
RFWVEF

RED FLAG WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
659 PM PST SAT MAR 3 2007

AZZ101-CAZ229-NVZ466-040400-
/O.EXP.KVEF.FW.W.0001.000000T0000Z-070304T0300Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
659 PM PST SAT MAR 3 2007 /759 PM MST SAT MAR 3 2007/

...RED FLAG WARNING WILL EXPIRE AT 7 PM PST /8 PM MST/ THIS
EVENING...

THE RED FLAG WARNING WILL EXPIRE AT 7 PM PST /8 PM MST/ THIS
EVENING FOR THE LAKE MEAD NATIONAL RECREATION AREA AND THE COLORADO
RIVER VALLEY DOWN TO LAKE HAVASU. PEAK WIND GUSTS HAD DECREASED TO
LESS THAN 30 MPH EARLY THIS EVENING AND SUSTAIN WIND SPEEDS
BETWEEN 10 AND 15 MPH...WITH LOCAL GUSTS UP TO 25 MPH...CAN BE
EXPECTED OVERNIGHT. RELATIVE HUMIDITY VALUES WERE STILL BELOW 15
PERCENT AND RECOVERY WILL BE QUITE LIMITED.

$$

JGA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
315 AM PST SAT MAR 3 2007

.SYNOPSIS...HIGH PRESSURE WILL MOVE OVER THE AREA TODAY AND SUNDAY
RESULTING IN TEMPERATURES WARMING TO NEAR NORMAL BY SUNDAY.
BREEZY TO LOCALLY WINDY CONDITIONS WILL BE SEEN TODAY ACROSS
SOUTHERN NEVADA AND NORTHWEST ARIZONA.
&&

.SHORT TERM...UPPER RIDGE AXIS JUST OFF THE CALIFORNIA COAST AT 11Z
TO TRANSITION EAST DURING THE DAY WITH AXIS FORECAST TO BE OVER
NEVADA BY 12Z SUNDAY. BROAD RIDGE GENERALLY REMAINS OVER THE AREA
THROUGH THE REMAINDER OF THE SHORT TERM. SURFACE HIGH ACROSS
NORTHERN UTAH TO BUILD DURING THE DAY WITH RESULTANT NORTHEAST/
SOUTHWEST GRADIENTS INCREASING THIS AFTERNOON. ALTHOUGH BREEZY TO
LOCALLY WINDY CONDITIONS WILL RESULT ESPECIALLY ALONG THE COLORADO
RIVER VALLEY...DO NOT ANTICIPATE WIDESPREAD ADVISORY LEVEL WINDS
WILL BE SEEN...BUT WILL NEED TO MONITOR THROUGH THE DAY. HOWEVER LOW
RELATIVE HUMIDITY AND FIRE DANGER HAS PROMPTED THE ISSUANCE OF A
RED FLAG WARNING FOR THE AREA. SEE DISCUSSION BELOW. AS UPPER RIDGE
MOVES OVER THE CWA ON SUNDAY...SURFACE GRADIENTS TO DECREASE FOR
LESS WINDS. INCREASED HEIGHTS/THICKNESS TO ALLOW FOR WARMING BOTH
TODAY AND SUNDAY. BY MONDAY UPPER LOW WELL OFF THE SOUTHERN
CALIFORNIA COAST TO MOVE THROUGH RIDGE AND FLATTEN FLOW
SOMEWHAT. ALTHOUGH INCREASED CLOUDS LOOKED FOR SUNDAY AND INTO
MONDAY...LIMITED DYNAMICS/LOW LEVEL MOISTURE WITH SYSTEM FOR OUR
AREA THUS DO NOT ANTICIPATE ANY SHOWER ACTIVITY. WILL INCREASE CLOUD
COVER INTO MONDAY HOWEVER WITH PARTLY CLOUDY MOST AREAS. CLOUDS MAY
HAMPER HEATING INTO MONDAY...BUT TEMPS SHOULD STILL WARM UNDER MORE
SOUTHWEST FLOW WITH ABOVE NORMAL READINGS LOOKED FOR INTO MONDAY.

.LONG TERM...NO MAJOR STORM SYSTEMS EXPECTED OVER THE AREA IN THE
EXTENDED TERM. A LARGE UPPER TROUGH CENTERED OVER THE GULF OF ALASKA
WILL EJECT SHORTWAVE ENERGY TOWARD THE PACIFIC NW COAST BUT NONE OF
THE SYSTEMS AT THIS POINT LOOK PARTICULARLY IMPRESSIVE OR MOVE FAR
ENOUGH SOUTHWARD TO HAVE ANY MAJOR IMPACT ON THE AREA WEATHER. THE
GENERAL WEST TO EAST FLOW WILL TAP MID AND UPPER LEVEL MOISTURE
BRINGING VARIABLE AMOUNTS OF CLOUDS ACROSS THE AREA. THERE MAY EVEN
BE AN OROGRAPHIC SHOWER OR TWO OVER THE NORTHERN ZONE MTNS AS THE
VARIOUS SHORTWAVES PASS TO THE NORTH. OTHER THAN THAT...TEMPS ARE
EXPECTED TO BE ABOVE NORMAL WITH ALL GFS ENSEMBLE MEMBERS
FORECASTING 70S FOR THE LAS VEGAS VALLEY TUESDAY AND BEYOND.
&&

.FIRE WEATHER...NORTHEAST SURFACE GRADIENTS WILL PRODUCE NORTHERLY
FLOW ACROSS THE SOUTHERN PORTION OF THE DISTRICT TODAY WITH THE
STRONGEST WINDS ARE EXPECTED ALONG THE COLORADO RIVER VALLEY...
MAINLY SOUTH OF THE DAM. WIND SPEEDS WILL BE BORDERLINE RED FLAG
CRITERIA....BUT THE COMBINATION OF LOW RELATIVE HUMIDITY AND VERY
HIGH TO ISOLATED EXTREME FIRE DANGER RATINGS ALONG THE LOWER
COLORADO RIVER SHOULD PRODUCE RED FLAG CONDITIONS THIS AFTERNOON.
&&

.AVIATION...FOR KLAS: NORTHEAST TO EASTERLY WINDS FROM 8 TO 10 KTS
WILL CONTINUE THROUGH THE EARLY MORNING HOURS AND THEN RESURFACE
AGAIN THIS AFTERNOON. SKIES WILL BE MOSTLY SUNNY WITH VARIABLE HIGH
CLOUDINESS.

THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA: NORTHEAST TO EASTERLY WINDS FROM 5 TO 12 KT ARE EXPECTED
IN MOST LOCATIONS...WITH THE EXCEPTION OF KEED WHERE NORTH WINDS
BETWEEN 15 AND 25 MPH AND GUSTS TO 35 MPH ARE POSSIBLE.
&&

.VEF WATCHES/WARNINGS/ADVISORIES...
.NV...RED FLAG WARNING FOR THIS AFTERNOON FOR FIRE WEATHER ZONE 466.
.AZ...RED FLAG WARNING FOR THIS AFTERNOON FOR FIRE WEATHER ZONE 101.
.CA...RED FLAG WARNING FOR THIS AFTERNOON FOR FIRE WEATHER ZONE 229.
&&

JENSEN/SALMEN

HTTP://WEATHER.GOV/LASVEGAS