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AREA FORECAST DISCUSSION

 
 FXUS65 KTWC 200855
 AFDTWC
 
 AREA FORECAST DISCUSSION
 NATIONAL WEATHER SERVICE TUCSON AZ
 155 AM MST SAT SEP 20 2008
 
 .SYNOPSIS...
 DRY CONDITIONS WITH ABOVE NORMAL DAYTIME TEMPERATURES INTO NEXT WEEK 
 AS HIGH PRESSURE ALOFT DIVERTS STORM SYSTEMS WELL NORTH OF THE AREA. 
 
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 .DISCUSSION...UPPER LOW OVER NRN CALIFORNIA EARLY THIS MORNING WILL 
 MOVE NEWD TODAY AS HIGH PRESSURE ALOFT REMAINS OVER SE AZ. 20/00Z 
 NAM HINTED AT THE POTENTIAL FOR A SHOWER ACROSS EXTREME COCHISE 
 COUNTY LATE THIS AFTERNOON...WHILE THE 20/00Z ECMWF PRODUCED LIGHT 
 PRECIP ACROSS THE WHITE MOUNTAINS. HOWEVER BELIEVE AIRMASS WILL BE 
 TOO DRY AND STABLE TO SUPPORT ANY SHOWERS/TSTMS CAPABLE OF PRODUCING 
 MEASURABLE PRECIP. FAIRLY DRY WLY FLOW ALOFT TO OCCUR SUN-MON. LARGE 
 UPPER HIGH TO BE OVER THE SWRN CONUS DURING THE TUE-FRI PERIOD WITH 
 STORM TRACK DIVERTED WELL NORTH OF SE AZ. THUS EXPECT PRECIP-FREE 
 CONDITIONS WITH ABOVE NORMAL DAYTIME TEMPS DURING THE UPCOMING WEEK.
 
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 .AVIATION...MOSTLY CLEAR SKIES ACROSS MUCH OF SE AZ INTO SUNDAY WITH 
 PARTLY CLOUDY SKIES ACROSS THE WHITE MOUNTAINS. LIGHT SURFACE WINDS 
 INTO SUNDAY. AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS.
 
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 .TWC WATCHES/WARNINGS/ADVISORIES...NONE.
 
 

 
 WEATHER.GOV/TUCSON
 
 
 

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