958  
FXUS65 KTWC 232142  
AFDTWC  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE TUCSON AZ  
242 PM MST SAT OCT 23 2021  
   
SYNOPSIS
 
WARM AND DRY THIS WEEKEND AND INTO EARLY NEXT WEEK. A  
WEATHER SYSTEM BRINGS COOLER TEMPERATURES AND A SLIGHT CHANCE OF  
A FEW SHOWERS MAINLY NORTH AND EAST OF TUCSON MONDAY NIGHT INTO  
TUESDAY NIGHT.  
 

 
   
DISCUSSION
 
PLEASANT TEMPS WITH SOME PASSING CIRRUS CLOUDS SUMS  
TODAY UP NICELY. SUNDAY WILL BE SIMILAR.  
 
MONDAY: WARMER WITH BREEZY SOUTHWEST WINDS IN ADVANCE OF PACIFIC  
TROF WHICH MOVES INLAND.  
 
TUESDAY: THE ABOVE MENTIONED PACIFIC TROF AND ITS ASSOCIATED COLD  
FRONT WILL PUSH ACROSS THE AREA TUESDAY MORNING. THIS SYSTEM WILL  
BRING A SLIGHT CHANCE OF VALLEY RAIN AND HIGH ELEVATION SNOW  
SHOWERS. PRECIPITATION TOTALS WILL BE VERY LIGHT. MUCH COOLER WITH  
HIGHS UP TO 10 DEGREES COOLER THAN MONDAY.  
 
WEDNESDAY: AFTER A CHILLY START TO THE MORNING, LIKELY THE COLDEST  
MORNING IN THIS 7 DAY FORECAST PACKAGE, HIGHS REBOUND A FEW  
DEGREES WARMER THAN TUESDAY.  
 
THURSDAY AND FRIDAY: WARMER UNDER BUILDING HIGH PRESSURE ALOFT.  
 

 
   
AVIATION
 
VALID THROUGH 25/00Z. FEW TO SCT CIRRUS CLOUDS AOA  
20K FT AGL THRU VALID PD. SFC WINDS SWLY 7-13 KTS WITH OCNL GUSTS  
AROUND 20 KTS ON SUNDAY. AVIATION NOT UPDATED FOR TAF AMENDMENTS.  
 

 
   
FIRE WEATHER
 
A QUIET AND DRY PERIOD OF WEATHER THIS WEEKEND,  
WITH A SLIGHT CHANCE OF SHOWERS IN THE WHITE MOUNTAINS MONDAY  
NIGHT INTO TUESDAY NIGHT. 20-FT WINDS INCREASE EACH AFTERNOON AT  
THROUGH TUESDAY, BUT GENERALLY REMAIN LESS THAN 20 MPH. EXPECT  
SEASONAL HUMIDITY LEVELS IN THE TEENS TO LOWER 20S DURING THE  
AFTERNOON WITH GOOD OVERNIGHT RECOVERIES, INCREASING NEXT TUESDAY.  
 

 
   
TWC WATCHES/WARNINGS/ADVISORIES
 
NONE.  
 

 
 

 
 
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