111  
FXUS65 KREV 011948  
AFDREV  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE RENO NV  
1248 PM PDT WED OCT 1 2025  
   
KEY MESSAGES  
 
* TEMPERATURES REMAIN BELOW AVERAGE THROUGH THE UPCOMING WEEK,  
WITH FRIDAY BEING THE COLDEST DAY.  
 
* THE BEST CHANCES FOR SHOWERS AND THUNDERSTORMS ARRIVE THURSDAY  
AFTERNOON THROUGH FRIDAY AS LOW PRESSURE DROPS INTO THE REGION.  
 
* DRIER AND COOL CONDITIONS PREVAIL THIS WEEKEND INTO NEXT WEEK.  
 
 
   
DISCUSSION  
 
PERIODS OF LIGHT SHOWERS WILL CONTINUE THROUGH THE REST OF THE  
AFTERNOON AS WE REMAIN AT THE EDGE OF THE STORM TRACK. ONE OR TWO  
STRAY THUNDERSTORMS MAY DEVELOP IN THE SIERRA THIS AFTERNOON.  
BREEZY AFTERNOON WINDS RETURN, BUT THEN THOSE SHOULD DECREASE IN  
MOST VALLEY AREAS, EXCEPT ON MOUNTAIN RIDGES WERE THOSE BREEZES  
CONTINUE.  
 
ANOTHER UPPER LEVEL TROUGH DESCENDS INTO THE REGION TOMORROW AND  
BRINGS BACK WIDESPREAD CHANCES FOR SHOWERS AND ISOLATED  
THUNDERSTORMS. THIS ACTIVITY WILL BE MOVING RELATIVELY FAST AS  
WINDS IN THE 500 MB LAYER ARE GOING TO BE MOVING AT 30-50 KTS AND  
AROUND 15-30KTS AT THE 700 MB LAYER. THEREFORE, EXPECT MAINLY  
LOCALLY HEAVY RAIN WHERE STORMS END UP TRAINING. OTHERWISE, THE  
STORMS SHOULD MOVE FAST. ANYWAY, THERE IS A MARGINAL RISK (5-15%  
CHANCE) OF EXCESSIVE RAIN BY WPC. OTHER HAZARDS WITH THIS ACTIVITY  
WILL BE OCCASIONAL LIGHTNING, SMALL HAIL AND GUSTY OUTFLOW WINDS  
IN EXCESS OF 40 MPH. CAMS ARE INDICATING THE CONVECTION WILL BE  
MAINLY OVER THE TAHOE BASIN AND, NV BASIN AND RANGE WHERE  
MULTIPLE BANDS OF RAIN/STORMS ARE EXPECTED STARTING TOMORROW  
AFTERNOON AND TOMORROW NIGHT.  
 
BY FRIDAY, TEMPERATURES WILL DROP AS THE BACKSIDE OF THE SYSTEM  
BRINGS COLDER AIR BEHIND THE ASSOCIATED COLD FRONT. DRIER  
CONDITIONS START BY FRIDAY AFTERNOON, BUT TEMPERATURES WILL NOT  
IMPROVE MUCH THROUGH THE REST OF THE WEEKEND. TEMPERATURES WILL  
GRADUALLY WARM UP EARLY NEXT WEEK, BUT WILL REMAIN BELOW NORMAL.  
 
THAT BEING SAID THERE IS YET ANOTHER UPPER LEVEL LOW SYSTEM  
AFFECTING THE REGION MONDAY INTO TUESDAY. HOWEVER, THERE IS  
UNCERTAINTY ABOUT HOW DEEP THIS NEXT TROUGH WILL BE AND HOW MUCH  
PRECIPITATION IT WILL BRING TO THE AREA.  
 
-HC  
 
 
   
AVIATION  
 
GENERALLY VFR CONDITIONS CONTINUE THROUGH TOMORROW (THURSDAY)  
AFTERNOON. THE EXCEPTIONS WILL BE NEAR SHRA AND -TSRA WHERE CIGS  
AND VIS COULD DROP TO MVFR OR IFR WITH THE STRONGEST ACTIVITY. THE  
STRONGEST STORMS ARE LIKELY TOMORROW AFTER 18Z. STORMS APPEAR TO  
CONTINUE INTO THE OVERNIGHT HOURS. LOW LEVEL CLOUD DECKS LEADING  
TO MOUNTAIN OBSCURATIONS IN THE SIERRA CONTINUE THROUGH TOMORROW.  
 
WINDS INCREASE THIS AFTERNOON, BUT WILL BE LIGHTER THAN THE LAST  
FEW DAYS AT TERMINALS. WINDS DECREASE IN THE VALLEYS OVERNIGHT.  
HOWEVER, MINOR TURBULENCE AND LLWS WILL PERSIST THROUGH TOMORROW.  
 
-HC  
 
 
   
REV WATCHES/WARNINGS/ADVISORIES  
 
NV...NONE.  
CA...NONE.  
 
 
 
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