212 
FXUS65 KPSR 281227
AFDPSR
AZZ020>028-CAZ030>033-281745-

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PHOENIX AZ
430 AM MST WED APR 28 2004

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

.SYNOPSIS...
A STRONG LOW PRESSURE SYSTEM FROM THE NORTH WILL BRING WINDY WEATHER
AND AREAS OF BLOWING SAND AND DUST TODAY THROUGH THURSDAY WITH MUCH 
COOLER WEATHER THURSDAY. THERE MAY BE ENOUGH MOISTURE FOR A SLIGHT 
CHANCE OF SHOWERS AND THUNDERSTORMS EAST OF THE GREATER PHOENIX AREA 
THIS AFTERNOON AND EVENING. OTHERWISE...IT WILL BE MOSTLY SUNNY TODAY
AND MOSTLY CLEAR TONIGHT. STRONG HIGH PRESSURE ALOFT FROM THE PACIFIC
WILL BRING BACK WARMER WEATHER THIS WEEKEND AND EARLY NEXT WEEK WITH 
CONTINUED MOSTLY CLEAR NIGHTS AND SUNNY DAYS.

&&

.DISCUSSION...
A WEAK LOW PRESSURE SYSTEM WAS SOUTH OF EL PASO AND IS EXPECTED TO 
MOVE EAST AWAY FROM ARIZONA OVER TEXAS TODAY. HOWEVER THERE IS 
ENOUGH MOISTURE FROM MEXICO LEFT BEHIND TO CONTINUE MENTIONING A 
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EAST OF THE GREATER 
PHOENIX AREA THIS AFTERNOON AND EVENING. OTHERWISE IT WILL BE MOSTLY 
SUNNY TODAY AND MOSTLY CLEAR TONIGHT. THE BIG WEATHER NEWS IS WINDY 
WEATHER TODAY THROUGH THURSDAY AS A STRONG LOW PRESSURE SYSTEM THAT 
WAS LOCATED OVER MONTANA EARLY THIS MORNING MOVES SOUTH TOWARD 
ARIZONA TODAY THROUGH THURSDAY. THE ASSOCIATED COLD FRONT WILL SWING 
SOUTHEAST ACROSS SOUTHEAST CALIFORNIA AND ARIZONA TONIGHT AND 
THURSDAY. THIS SYSTEM WILL BE DRY THIS FAR SOUTH WITH WINDY WEATHER 
DEVELOPING AHEAD OF THE COLD FRONT THIS AFTERNOON CONTINUING AS THE 
COLD FRONT SWEEPS SOUTHEAST ACROSS THE AREA TONIGHT AND THURSDAY. IT 
WILL ALSO BE MUCH COOLER THURSDAY. A RED FLAG WARNING IS IN EFFECT 
FOR OUR ENTIRE AREA FROM 12 NOON MST/PDT THIS AFTERNOON THROUGH 7 PM 
MST/PDT THIS EVENING DUE TO THE GUSTY WINDS AND LOW HUMIDITY. A WIND 
ADVISORY HAS BEEN EXTENDED FROM SOUTHEAST CALIFORNIA TO SOUTHWEST 
ARIZONA AND IS IN EFFECT FROM 12 NOON TODAY THROUGH 9 PM TONIGHT. A 
WIND ADVISORY HAS ALSO BEEN ISSUED FOR SOUTH-CENTRAL ARIZONA 
INCLUDING THE GREATER PHOENIX AREA FOR THURSDAY. THE WINDS ARE 
EXPECTED TO RESULT IN BLOWING SAND AND DUST. STRONG HIGH PRESSURE 
ALOFT FROM THE PACIFIC WILL BRING BACK WARMER WEATHER THIS WEEKEND 
AND EARLY NEXT WEEK WITH CONTINUED MOSTLY CLEAR NIGHTS AND SUNNY 
DAYS.

&&

.PSR WATCHES/WARNINGS/ADVISORIES...
AZ...WIND ADVISORY FOR SOUTHWEST ARIZONA INCLUDING THE LOWER
     COLORADO RIVER VALLEY NORTH OF YUMA...ZONES 20...21...AND 26
     FROM 12 NOON MST (1900 GMT) TODAY THROUGH 9 PM MST (0400 GMT)
     TONIGHT.
     WIND ADVISORY FOR SOUTH-CENTRAL ARIZONA INCLUDING THE
     GREATER PHOENIX AREA FOR THURSDAY.
     RED FLAG WARNING FOR ALL OF SOUTHWEST AND SOUTH-CENTRAL
     ARIZONA...FIRE WEATHER ZONES 131...132 AND 133...FROM
     12 NOON MST (1900 GMT) THIS AFTERNOON THROUGH 7 PM MST
     (0200 GMT) THIS EVENING.
CA...WIND ADVISORY FOR SOUTHEAST CALIFORNIA INCLUDING THE LOWER
     COLORADO RIVER VALLEY...ZONES 30...31...32...AND 33 FROM
     12 NOON PDT (1900 GMT) TODAY THROUGH 9 PM PDT (0400 GMT)
     TONIGHT.
     RED FLAG WARNING FOR ALL OF SOUTHEAST CALIFORNIA...
     FIRE WEATHER ZONES 230...231 AND 232...FROM 12 NOON PDT
     (1900 GMT) THIS AFTERNOON THROUGH 7 PM PDT (0200 GMT)
     THIS EVENING.

&&

$$

ELLIS