Red Flag Warning 27, NWS Phoenix, AZ

000 
WWUS85 KPSR 051745
RFWPSR

RED FLAG WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
1022 AM MST WED MAR 5 2008

AZZ132-060400-
/O.EXB.KPSR.FW.W.0027.080305T1722Z-080306T0400Z/
ARIZONA FIRE WEATHER ZONE 132                                    
SOUTH-CENTRAL AND SOUTHWEST DESERTS-
1022 AM MST WED MAR 5 2008

...RED FLAG WARNING IN EFFECT UNTIL 9 PM MST THIS EVENING FOR THE 
SOUTHWEST ARIZONA DESERTS DUE TO STRONG WINDS...LOW RELATIVE 
HUMIDITY AND HIGH FIRE DANGER......

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT UNTIL 9 PM MST THIS EVENING FOR THE
SOUTHWEST ARIZONA DESERTS OF LA PAZ AND YUMA COUNTIES...DUE TO STRONG
WINDS...LOW RELATIVE HUMIDITIES AND HIGH FIRE DANGER.

A STRONG WEATHER DISTURBANCE AND ASSOCIATED SURFACE COLD FRONT
WILL MOVE ACROSS SOUTHWEST ARIZONA TODAY AND THIS EVENING. STRONG
NORTHERLY WINDS AND A VERY DRY AIRMASS ARE EXPECTED WITH SUSTAINED
WIND SPEEDS FROM 20 TO 30 MPH AND GUSTS NEAR 40 MPH. IN ADDITION
...RELATIVE HUMIDITY VALUES WILL DROP WELL BELOW 15 PERCENT. STRONG
NORTHERLY WIND ...COMBINED WITH LOW RELATIVE HUMIDITY AND HIGH FIRE
DANGER WILL RESULT IN WIDESPREAD HAZARDOUS FIRE WEATHER CONDITIONS.

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING.

$$

AZZ131-CAZ231-232-060400-
/O.EXT.KPSR.FW.W.0027.080305T1722Z-080306T0400Z/
ARIZONA FIRE WEATHER ZONE 131                                    
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
CALIFORNIA FIRE WEATHER ZONE 231                                 
LOWER COLORADO RIVER VALLEY CA-
CALIFORNIA FIRE WEATHER ZONE 232                                 
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
1022 AM MST WED MAR 5 2008 /922 AM PST WED MAR 5 2008/

...RED FLAG WARNING IN EFFECT UNTIL 9 PM MST /8 PM PST/ THIS
EVENING FOR THE LOWER COLORADO RIVER VALLEY AND SOUTHEAST CALIFORNIA
DESERTS DUE TO STRONG WIND AND LOW RELATIVE HUMIDITY...

THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 9 PM MST /8 PM PST/
THIS EVENING. 

WINDS ASSOCIATED WITH A STRONG WEATHER DISTURBANCE AND SURFACE COLD
FRONT HAVE PICKED UP A BIT EARLIER THAN EXPECTED...AND THE RED FLAG
WARNING IS NOW IN EFFECT...AND WILL CONTINUE THROUGH 9 PM MST /8PM
PST THIS EVENING.

SUSTAINED WIND SPEEDS FROM 20 TO 30 MPH WITH GUSTS NEAR 40 MPH ARE
EXPECTED ALONG THE LOWER COLORADO RIVER VALLEY AND SOUTHEAST 
CALIFORNIA DESERTS TODAY INTO THE EVENING HOURS. IN 
ADDITION...RELATIVE HUMIDITY VALUES WILL DROP WELL BELOW 15 PERCENT. 
STRONG NORTHERLY WIND...COMBINED WITH LOW RELATIVE HUMIDITY AND HIGH 
FIRE DANGER WILL RESULT IN WIDESPREAD HAZARDOUS FIRE WEATHER 
CONDITIONS.

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING.

$$

WANEK

000 
WWUS85 KPSR 051946
RFWPSR

RED FLAG WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
1246 PM MST WED MAR 5 2008

CAZ230-060400-
/O.EXA.KPSR.FW.W.0027.000000T0000Z-080306T0400Z/
CALIFORNIA FIRE WEATHER ZONE 230                                 
JOSHUA TREE NATIONAL PARK-
1146 AM PST WED MAR 5 2008

...RED FLAG WARNING IN EFFECT UNTIL 8 PM PST THIS EVENING FOR
JOSHUA TREE NATIONAL PARK IN SOUTHEAST CALIFORNIA DUE TO STRONG WINDS
AND LOW RELATIVE HUMIDITIES...

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT UNTIL 8 PM PST THIS EVENING...FOR JOSHUA
TREE NATIONAL PARK IN SOUTHEAST CALIFORNIA.

STRONG GUSTY NORTHERLY WINDS IN EXCESS OF 35 MPH...COMBINED WITH LOW
RELATIVE HUMIDITY...WILL RESULT IN WIDESPREAD HAZARDOUS FIRE WEATHER
CONDITIONS OVER JOSHUA TREE NATIONAL PARK IN SOUTHEAST CALIFORNIA.

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING.

$$

AZZ131-132-CAZ231-232-060400-
/O.CON.KPSR.FW.W.0027.000000T0000Z-080306T0400Z/
ARIZONA FIRE WEATHER ZONE 131                                    
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
ARIZONA FIRE WEATHER ZONE 132                                    
SOUTH-CENTRAL AND SOUTHWEST DESERTS-
CALIFORNIA FIRE WEATHER ZONE 231                                 
LOWER COLORADO RIVER VALLEY CA-
CALIFORNIA FIRE WEATHER ZONE 232                                 
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
1246 PM MST WED MAR 5 2008 /1146 AM PST WED MAR 5 2008/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MST /8 PM PST/
THIS EVENING FOR THE SOUTHWEST ARIZONA DESERTS...THE LOWER COLORADO
RIVER VALLEY...AND THE SOUTHEAST CALIFORNIA DESERTS DUE TO STRONG WINDS
AND LOW RELATIVE HUMIDITIES...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MST /8 PM PST/
THIS EVENING FOR THE SOUTHWEST ARIZONA DESERTS...THE LOWER COLORADO
RIVER VALLEY...AND THE SOUTHEAST CALIFORNIA DESERTS DUE TO STRONG WINDS
AND LOW RELATIVE HUMIDITIES...

SUSTAINED WIND SPEEDS FROM 20 TO 30 MPH WITH GUSTS NEAR 40 MPH ARE
EXPECTED OVER THE SOUTHWEST ARIZONA DESERTS...ALONG THE LOWER COLORADO RIVER
VALLEY...AND OVER THE SOUTHEAST CALIFORNIA DESERTS THROUGH THE
EVENING HOURS. IN ADDITION... RELATIVE HUMIDITY VALUES WILL CONTINUE
TO DROP...FALLING WELL BELOW 15 PERCENT. STRONG NORTHERLY
WIND...COMBINED WITH LOW RELATIVE HUMIDITY AND HIGH FIRE DANGER WILL
RESULT IN WIDESPREAD HAZARDOUS FIRE WEATHER CONDITIONS.

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING.

$$

WANEK

000 
WWUS85 KPSR 060400
RFWPSR

RED FLAG WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
900 PM MST WED MAR 5 2008

AZZ131-132-CAZ230>232-060500-
/O.EXP.KPSR.FW.W.0027.000000T0000Z-080306T0400Z/
ARIZONA FIRE WEATHER ZONE 131                                    
YUMA/MARTINEZ LAKE AND VICINITY/LOWER COLORADO RIVER VALLEY AZ-
ARIZONA FIRE WEATHER ZONE 132                                    
SOUTH-CENTRAL AND SOUTHWEST DESERTS-
CALIFORNIA FIRE WEATHER ZONE 230                                 
JOSHUA TREE NATIONAL PARK-
CALIFORNIA FIRE WEATHER ZONE 231                                 
LOWER COLORADO RIVER VALLEY CA-
CALIFORNIA FIRE WEATHER ZONE 232                                 
IMPERIAL COUNTY AND EASTERN RIVERSIDE COUNTY-
900 PM MST WED MAR 5 2008 /800 PM PST WED MAR 5 2008/

...RED FLAG WARNING WILL EXPIRE AT 9 PM MST /8 PM PST/ THIS
EVENING...

THE RED FLAG WARNING WILL EXPIRE AT 9 PM MST /8 PM PST/ THIS
EVENING. 

RELATIVE HUMIDITIES WERE SLOW TO RECOVER AND WERE MOSTLY LESS THAN
15 PERCENT LATE THIS EVENING...BUT THEY WERE EXPECTED TO RISE ABOVE
CRITICAL VALUES LATER TONIGHT. AND...WINDS HAD DECREASED SUBSTANTIALLY
ACROSS THE AREA SINCE SUNSET AND HAD FALLEN BELOW CRITICAL FIRE
WEATHER THRESHOLDS. THEREFORE...THE RED FLAG WARNING WILL BE ALLOWED
TO EXPIRE ON SCHEDULE THIS EVENING.

$$

ESTLE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PHOENIX AZ
935 PM MST TUE MAR 4 2008

SOUTH-CENTRAL AND SOUTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA
FORECAST DISCUSSION

.SYNOPSIS...
MOSTLY CLEAR SKIES WITH CONTINUED MILD OVERNIGHT LOWS ARE EXPECTED
INTO WEDNESDAY. A DRY LOW PRESSURE SYSTEM AND ITS ASSOCIATED WEAK
COLD FRONT WILL SWING THROUGH ARIZONA WEDNESDAY AFTERNOON AND
OVERNIGHT...FOR BREEZY CONDITIONS AND SLIGHTLY COOLER DAYTIME
TEMPERATURES THROUGH THURSDAY. HIGH PRESSURE WILL RETURN TO THE
REGION FRIDAY...FOR CONTINUED DRY WEATHER AND A WARMING TREND OVER
THE WEEKEND. ABOVE NORMAL TEMPERATURES ARE LIKELY LATE IN THE
WEEKEND THROUGH MONDAY...WITH DAYTIME HIGHS IN THE 80S OVER MUCH OF
THE LOWER DESERT.

&&

.SHORT TERM...
TONIGHT THROUGH FRIDAY
935 PM MST TUE MAR 4 2008

VERY QUIET WX AROUND THE PHX CWA THIS EVENING...WITH A DRY NWLY FLOW
ALOFT IN PLACE OVER THE REGION. BAND OF CIFM CLOUDINESS PUSH THRU
SRN AZ AT PRESENT...BUT RATHER CLEAR UPSTREAM.

00Z MODEL DATA SHOW YET ANOTHER TROUGH CARVING OUT OVER THE WRN
STATES THIS EVENING. THIS SYSTEM WILL BE GRAZING BY AZ...WITH LITTLE
IF ANY APPRECIABLE MOISTURE. HOWEVER...NICE COLD FRONT WILL BE
PUSHING SWD DURING THE DAY ON WEDNESDAY...LIKELY PASSING THRU THE
GREATER PHX AREA SOMETIME AFTER 00Z THU. PRESSURE GRADIENTS WILL BE
QUITE TIGHT ALONG AND BEHIND THE FRONT...WITH GUSTY N WINDS STILL
LIKELY DOWN THE CO RIVER AND IN SE CA AS EARLY AS WED AFTERNOON.
MODELS SUGGEST STRONGEST CORE OF LOW LEVEL WINDS WILL BE PUSHING
THRU THE RIVER AFTER 00Z...WITH SOME GUSTS POSSIBLY APPROACHING WIND
ADVISORY CRITERIA. LATER SHIFTS WILL NEED TO WATCH OUT FOR THAT
POSSIBILITY. IN THE MEANTIME...CURRENT FIRE WX WATCH STILL APPEARS
REASONABLE...IN LIGHT OF THE ABOVE WIND SPEEDS...AND CONTINUED VERY
DRY LOW LEVEL AMS. CURRENT FORECASTS IN GOOD SHAPE...NO UPDATES
NEEDED THIS EVENING.

PREVIOUS DISCUSSION...
WEDNESDAY...AN UPPER LEVEL TROF OF LOW PRESSURE AND ITS ASSOCIATED
WEAK COLD FRONT WILL MOVE INTO NORTHERN ARIZONA WEDNESDAY
AFTERNOON...BEFORE SWINGING THROUGH THE STATE OVERNIGHT WED INTO
THU. THIS IS A RELATIVELY DRY SYSTEM...CERTAINLY FOR OUR CWA...WITH
THE MAIN IMPACT ONCE AGAIN BEING WINDS. BREEZY TO LOCALLY WINDY
CONDITIONS ARE EXPECTED WED AFTERNOON INTO THE EVENING HOURS...AS
THE COLD POOL ASSOCIATED WITH THIS SYSTEM MOVES THROUGH UT AND SERN
AZ FOR AN INCREASING GRADIENT WIND. DOESNT LOOK LIKE WINDS WILL BE
ELEVATED ENOUGH TO WARRANT A WIND ADVISORY...BUT CERTAINLY 15 TO 25
MPH RANGE WITH GUSTS TO 35 MPH...ARE EXPECTED BETWEEN 22 AND 04 UTC
(3PM TO 9PM MST) FROM THE CO RIVER VALLEY WESTWARD. WITH THE DRY AIR
CURRENTLY IN PLACE...AND EVEN DRIER AIR EXPECTED TO FILTER IN ON THE
BACK SIDE OF THIS SYSTEM...WE CAN EXPECT SURFACE DEW POINTS TO LOWER
INTO THE LOW TEENS. THE DRY AIR COUPLED WITH BREEZY CONDITIONS WED
AFTERNOON AND EARLY EVENING COULD LEAD TO HAZARDOUS FIRE WEATHER
CONDITIONS. A FIRE WEATHER WATCH IS IN EFFECT FOR THE LOWER CO RIVER
VALLEY WESTWARD FOR WED AFTERNOON/EVENING (SEE PRODUCTS FWFPSR AND
RFWPSR FOR MORE DETAILS).

THURSDAY...THE COOLEST TEMPS WILL RE REALIZED THURSDAY...WITH
S-CNTRL AZ DESERTS HIGHS LOWERING TO THE UPPER 60S TO NEAR 70...A
BIT WARMER OUT WEST WHERE THERES A GREATER DEGREE OF SEPARATION
FROM THE COLD POOL ASSOCIATED WITH THIS SYSTEM. A FEW N/NELY BREEZES
CAN ALSO BE EXPECTED OVER THE S-CNTRL AZ DESERTS AND HIGHER TERRAIN
THURSDAY...BUT WINDS SHOULD REMAIN BELOW CRITICAL FIRE WEATHER
AND/OR WIND ADVISORY THRESHOLDS.

FRIDAY...A WARMING TREND WILL COMMENCE FRIDAY...AS A RIDGE OF
HIGH PRESSURE BUILDS ALONG THE WEST COAST. A GRADUAL WARMING TREND
WITH LIGHT SURFACE WINDS AND SUNNY TO MOSTLY SUNNY SKIES CAN BE
EXPECTED INTO THE WEEKEND.

&&

.LONG TERM...
THURSDAY NIGHT THROUGH MONDAY
405 AM MST TUE MAR 4 2008

GFS/ECMWF AGREE THAT HIGH PRESSURE ALOFT FROM THE EASTERN PACIFIC
WILL MOVE SLOWLY EAST AND BECOME THE DOMINANT WEATHER FEATURE OVER
THE SOUTHWEST UNITED STATES DURING THIS PERIOD. AS A RESULT...EXPECT
A WARMING TREND...WITH TEMPS RISING FROM NEAR-NORMAL LEVELS FRIDAY
TO 4-6 DEGREES ABOVE NORMAL BY SUNDAY-MONDAY. WEAK LOW-MID LEVEL
PRESSURE GRADIENT SHOULD RESULT IN PREDOMINANTLY LIGHT WINDS. AIR
MASS WILL REMAIN VERY DRY...SO DIURNAL TEMPERATURE RANGE WILL BE
GREATER THAN THE NORM.

&&

.AVIATION...
245 PM MST TUE MAR 4 2008 (2145 UTC MAR 4 2008)

SOUTHEAST CALIFORNIA AND SOUTHWEST ARIZONA THROUGH 00Z THU...
INCLUDING KBLH...KYUM...AND KIPL AIRPORTS.  MOSTLY CLEAR SKIES AND
LIGHT WIND WILL CONTINUE THROUGH 16Z WED.  HOWEVER...A DRY COLD
FRONT WILL APPROACH FROM THE NORTH ABOUT MID DAY WEDNESDAY...LEADING
TO INCREASING AND GUSTY NORTH TO NORTHWEST SURFACE WINDS TO NEAR 28
KNOTS BY 00Z THU.

SOUTH CENTRAL ARIZONA...INCLUDING KPHX...KIWA...KGYR...KSDL
AIRPORTS. MOSTLY CLEAR SKIES AND LIGHT WINDS WILL CONTINUE THROUGH
18Z WED. HOWEVER...A DRY COLD FRONT WILL APPROACH FROM THE NORTH
ABOUT MID DAY WEDNESDAY...LEADING TO INCREASING WEST TO NORTHWEST
SURFACE WINDS GUSTING TO NEAR 15 KNOTS BY 00Z THU.

&&

FIRE WEATHER...
245 PM MST TUE MAR 4 2008

...FIRE WEATHER WATCH POSTED FOR THE COLORADO RIVER AND PORTIONS OF
SOUTHEAST CALIFORNIA AND FAR SOUTHWEST ARIZONA...CA FIRE WEATHER
ZONES 230...231...AND 232...AND AZ FIRE WEATHER ZONES 131...FOR LATE
WEDNESDAY AFTERNOON AND EVENING...

ANOTHER DRY COLD FRONT WILL APPROACH THE REGION BY MID DAY
WEDNESDAY...THEN SWEEP THROUGH THE AREA WEDNESDAY EVENING. AS A
RESULT...INCREASING NORTH TO NORTHWEST WINDS ARE EXPECTED WEDNESDAY
AFTERNOON...WITH SUSTAINED WINDS OF 20 MPH WITH GUSTS TO NEAR 35 MPH
BY 5 PM PST...PARTICULARLY DOWN THE COLORADO RIVER AND OVER JOSHUA
TREE NATIONAL PARK THROUGH 8 PM PST.  RELATIVE HUMIDITIES LATE
WEDNESDAY AFTERNOON AND EVENING WILL FALL INTO THE 8 TO 13 PERCENT
RANGE.

ON THURSDAY...BREEZY NORTH WINDS OF 15 TO 20 MPH...ALONG WITH
HUMIDITIES OF 10 TO 15 PERCENT...WILL DEVELOP THURSDAY AFTERNOON AND
EVENING.  CLEAR SKIES ARE ALSO FORECAST.

&&

.PSR WATCHES/WARNINGS/ADVISORIES...

AZ...FIRE WEATHER WATCH FROM WEDNESDAY AFTERNOON THROUGH
     WEDNESDAY EVENING FOR AZZ131.

CA...FIRE WEATHER WATCH FROM WEDNESDAY AFTERNOON THROUGH
     WEDNESDAY EVENING FOR CAZ230>232.

&&

NATIONAL WEATHER SERVICE PHOENIX IS ON THE INTERNET AT

WEATHER.GOV/PHOENIX

SHORT TERM...ESTLE/WANEK
LONG TERM...DG
AVIATION...VASQUEZ
FIRE WX...VASQUEZ