521  
FXUS65 KTWC 060910  
AFDTWC  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE TUCSON AZ  
210 AM MST SAT DEC 6 2025  
   
SYNOPSIS
 
HIGH PRESSURE BEGINS TO SHIFT INTO THE REGION THIS  
WEEKEND, STRENGTHENING THROUGH NEXT WEEK. THIS WILL RESULT IN DRY  
CONDITIONS AND HIGH TEMPERATURES WARMING TO ABOVE SEASONABLE  
LEVELS TOMORROW THROUGH NEXT WEEK.  
 

 
   
DISCUSSION
 
SATELLITE IMAGERY THIS MORNING SHOWED A CLEAR SKY  
ACROSS SOUTHERN ARIZONA UNDER DRY NW FLOW ALOFT. HIGHS TODAY WILL  
BE SLIGHTLY WARMER, AROUND 1 TO 4 DEGREES, THAN YESTERDAY. WARMUP  
WILL CONTINUE TOMORROW AND THROUGH ALL OF NEXT WEEK AS UPPER  
RIDGE WEST OF CALIFORNIA GRADUALLY BUILDS IN OVER THE AREA FROM  
THE WEST. HIGHS UP TO 5 DEGREES ABOVE NORMAL TOMORROW, UP TO 10  
DEGREES ABOVE NORMAL MONDAY THEN 10 TO 14 DEGREES ABOVE NORMAL  
TUESDAY THROUGH FRIDAY WITH A FEW LOCALS NEAR RECORDS HIGHS NEXT  
FRIDAY.  
 

 
   
AVIATION
 
VALID THROUGH 07/12Z.  
SKC. SFC WINDS VRBL AND TERRAIN DRIVEN LESS THAN 8 KTS THRU  
06/17Z AND THEN AGAIN AFTER 07/04Z. AT OTHER TIMES, SFC WINDS  
WLY/NWLY 8-12 KTS. AVIATION DISCUSSION NOT UPDATED FOR TAF  
AMENDMENTS.  
 

 
   
FIRE WEATHER
 
DRY CONDITIONS ARE EXPECTED THE NEXT 7 DAYS. A  
WARMING TREND STARTS THIS WEEKEND WHERE HIGHS WILL RUN UP TO 5  
DEGREES ABOVE NORMAL. MUCH WARMER NEXT WEEK WHERE HIGHS WILL BE 8  
TO 12 DEGREES ABOVE NORMAL. 20-FOOT WINDS WILL GENERALLY BE 15 MPH  
OR LESS AND TERRAIN DRIVEN THROUGH THE MIDDLE OF NEXT WEEK.  
MINIMUM RH VALUES IN THE VALLEYS 16-26 PERCENT THIS WEEKEND AND  
THROUGH THE MIDDLE OF NEXT WEEK.  
 

 
   
TWC WATCHES/WARNINGS/ADVISORIES
 
NONE.  
 

 
 

 
 
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