National Weather Service Text Product
AFOS product AFDPSR
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: AFDPSR
Product Timestamp: 2002-06-24 22:25 UTC
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000 FXUS65 KPSR 242227 AFDPSR AZZ020>028-CAZ030>033-250545- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 325 PM MST MON JUN 24 2002 .SYNOPSIS... HIGH PRESSURE WILL PERSIST ACROSS THE DESERT SOUTHWEST THIS WEEK ...RESULTING IN A CONTINUATION OF HOT AND DRY WEATHER. A WEAK SUBTROPICAL DISTURBANCE WILL BRING PERIODS OF HIGH CLOUDS TUESDAY AND WEDNESDAY. .DISCUSSION... IN THE SHORT TERM...UPPER RIDGE WILL PERSIST NEAR OUR AREA WHILE BUILDING TO OUR NORTH...RESULTING IN A CONTINUATION OF SOUTHWEST FLOW ALOFT. A COUPLE OF FORECAST CHALLENGES TODAY...ONE CENTERS ON THE AMOUNT OF HIGH CLOUDINESS TUESDAY AND WEDNESDAY...AS WV/IR IMAGES CONFIRM PRESENCE OF SOME CIRRIFORM CLOUDS OVER BAJA AND ADJACENT EASTERN PACIFIC ASSOCIATED WITH A WEAK UPPER DISTURBANCE. AVN/ETA SUGGEST HIGH CLOUDS WILL INCREASE OVER FORECAST AREA TUESDAY AND TUESDAY NIGHT...WITH AVN FORECASTING HIGH CLOUDS TO THIN OUT FROM WEST TO EAST ON WEDNESDAY WHILE ETA MORE PERSISTENT WITH HIGH CLOUDS WEDNESDAY. PRECIPITABLE WATER HAS BEEN INCREASING ACROSS FAR SOUTHEAST CALIFORNIA AND SOUTHWEST AZ TODAY BASED ON GOES PW IMAGES...AND AVN/ETA FORECAST ATMOSPHERIC MOISTURE TO INCREASE OVER ALL OF THE CWA TONIGHT AND TUESDAY...THEN DECREASE BY LATE WEDNESDAY INTO THURSDAY. WITH MOST OF MOISTURE INCREASE AT MID-UPPER LEVELS. FOR NOW...FEEL PARTLY CLOUDY/SUNNY IS GOOD IDEA TUESDAY AND WEDNESDAY MOST OF AZ PTN...AND HAVE MADE THAT MINOR CHANGE TO THE ZONE PACKAGE. MODELS FORECAST BOUNDARY LAYER TO BE ABOUT 1C WARMER TUESDAY AND WEDNESDAY COMPARED TO TODAY. DO NOT FEEL CLOUDS WILL HAVE MUCH IMPACT ON DAYTIME HIGHS...BUT LOWS TUESDAY NIGHT MIGHT BE A DEGREE OR TWO WARMER. WILL GO WITH SIMILAR MINS AND MAXES NEXT THREE DAYS AS MIXING DEPTH TEMPS AND WIND NOT EXPECTED TO VARY MUCH. IN EXTENDED...DO NOT SEE MUCH CHANGE IN SENSIBLE WX FRIDAY THROUGH SUNDAY...BUT DEEP-LAYERED SOUTHERLY FLOW IS FORECAST TO DEVELOP BY NEXT MONDAY (DAY 7). IF THAT OCCURS...NOTICEABLE MOISTURE INCREASE IS POSSIBLE. FOR NOW...WILL GROUP FRIDAY THRU MONDAY AND STICK WITH A DRY FORECAST ALONG WITH A SLIGHTLY ABOVE NORMAL TEMPERATURES. DG .PSR...NONE.