000 
FXUS65 KPSR 100408
AFDPSR
AZZ020>028-CAZ030>033-101045-

SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PHOENIX AZ
910 PM MST SUN JUN 9 2002

.SYNOPSIS...
THE SOUTHERN TAIL OF A NORTHEASTWARD-MOVING LOW PRESSURE SYSTEM...
NOW CENTERED OVER IDAHO...WILL BRING COOLER TEMPERATURES AND BREEZY
WIND TO SOUTHEAST CALIFORNIA AND SOUTHWEST ARIZONA THROUGH MONDAY.
AS THE LOW MOVES FARTHER AWAY TO THE NORTHEAST...HIGH PRESSURE WILL 
BUILD OVER THE SOUTHWESTERN STATES FROM THE SOUTHEAST...RESULTING IN 
MORE DRY WEATHER AND WARMER TEMPERATURES ACROSS THE AREA THROUGH THE 
MIDDLE AND END OF THE WEEK.  

.DISCUSSION...
WINDS A BIT BREEZY LATE THIS AFTERNOON INTO THE EARLY EVENING HAVE 
NOW DECREASED A LITTLE WITH SUNSET. THUS...WITH THE DECREASING 
WIND... THE RED FLAG WARNING FOR ZONES 132/133 WAS ALLOWED TO EXPIRE 
AT 02Z...7 PM.  MODELS AND NEW ETA CONTINUE TO SHOW UPPER LOW OVER 
EASTERN IDAHO TO PULL OUT NORTHEASTWARD STARTING TONIGHT AND 
REACHING EASTERN MT BY MON NIGHT. THIS WILL CONTINUE TO LESSEN THE 
GRADIENT OVER SE CA / SW AZ FOR LESS WIND MON...AND EVEN LESS WIND 
TUES. TEMPS MON SHOULD BE ABOUT THE SAME AS SUN AS REGION WILL STILL 
BE UNDER A LITTLE INFLUENCE FROM THE TROF EXTENDING DOWN FROM THE ID 
UPPER LOW. BUT AS UPPER LOW PULLS OUT...AN UPPER HIGH PRESSURE 
CENTER LOCATED NEAR THE TEXAS BIG BEND AREA WILL EXPAND INTO AZ. 
THIS SHOULD BRING A SLOW WARMING TREND TO THE REGION STARTING TUES. 
SKIES WILL REMAIN CLEAR UNDER A DRY WEST TO SOUTHWEST FLOW ALOFT. 
HOWEVER...AS THE UPPER HIGH EXPANDS NORTHWESTWARD...IT BRINGS UP 
SOME MAINLY 500 MB MOISTURE INTO SE AZ. THE PREVIOUS AVN IS MOST 
AGRESSIVE WITH THIS MOISTURE AND SPREADS A FAIR AMOUNT OF IT INTO 
SOUTHERN GILA AND NW PINAL COUNTIES BY TUES...BUT THE NEW ETA 
FOLLOWS ITS PREVIOUS RUN AND TEMPERS THE SPREAD OF THIS MOISTURE 
THAT FAR WEST. SO EXPECT SOME MOISTURE TO SPREAD INTO THAT AREA FOR 
SOME CLOUDINESS TUES. SHOWERS, IF ANY, WOULD BE CONFINED TO THE 
HIGHER MOUNTAINS WELL EAST OF SOUTHERN GILA COUNTY. SE CA / SW AZ 
FOR BOTH MON/TUES SHOULD REMAIN SUNNY AS THAT AREA REMAINS UNDER A 
DRY SOUTHWEST FLOW ALOFT. NO UPDATES. DKS


.PSR...NONE.