910  
FXUS65 KREV 090846  
AFDREV  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE RENO NV  
146 AM PDT FRI MAY 9 2025  
   
KEY MESSAGES
 
 
* NEAR RECORD TEMPERATURES WILL BE POSSIBLE IN WESTERN NEVADA  
TODAY AND ON SATURDAY WITH INCREASED MINOR HEAT RISK CONCERNS  
AND RENEWED SNOWMELT RUNOFF.  
 
* A LATE SEASON STORM SYSTEM WILL BRING INCREASING WINDS ALONG  
WITH CHANCES FOR MOUNTAIN SNOWFALL AND VALLEY RAIN SHOWERS FROM  
SUNDAY THROUGH TUESDAY.  
 

 
   
DISCUSSION
 
 
* WITH HIGH PRESSURE FIRMLY IN PLACE, HIGH TEMPERATURES WILL PEAK  
TODAY AND ON SATURDAY. AFTERNOON READINGS WILL END UP IN THE MID  
TO UPPER 80S (A FEW 90S) IN WESTERN NV, EASTERN LASSEN, AND  
LOWER ELEVATIONS OF MONO COUNTY. THE MID 70S TO LOW 80S WILL BE  
COMMONPLACE FOR A MAJORITY OF EASTERN SIERRA COMMUNITIES. FOR  
TODAY, RENO STILL HAS A 30% CHANCE TO TIE THE RECORD HIGH OF 88  
DEGREES AND 10% CHANCE TO BREAK THAT RECORD. OTHERWISE, WE'LL  
MAINTAIN A LOW 5% FOR ISOLATED STORMS BUILDING OVER THE SIERRA  
THIS AFTERNOON AND ALSO ON SATURDAY AFTERNOON. WESTERLY WINDS  
WILL ONCE AGAIN BECOME BREEZY DURING THE AFTERNOON, SIMILAR TO  
YESTERDAY. HOWEVER WITH THE NEXT APPROACHING SYSTEM, WINDS WILL  
INCREASE IN STRENGTH FROM THE SOUTHWEST ON SATURDAY WITH GUSTS  
BETWEEN 25-35 MPH FOR WESTERN NV AND NORTHEAST CA; AND UPWARDS  
OF 50 MPH ACROSS THE SIERRA RIDGES.  
 
* THE NEXT SYSTEM TO MOVE INTO THE AREA WILL ARRIVE AS EARLY AS  
SUNDAY. BOTH DETERMINISTIC AND THE CORRESPONDING MODEL ENSEMBLES  
ARE IN GOOD AGREEMENT IN THE EVOLUTION OF THE PATTERN. A TROUGH  
WILL DROP INTO NORTHERN CA BY SUNDAY AFTERNOON. THIS FEATURE  
WILL THEN SLOWLY MOVE INTO CENTRAL NV BY LATE TUESDAY INTO EARLY  
WEDNESDAY.  
 
* THE FIRST CONCERN WITH THIS LATE SPRING SYSTEM WILL BE A FEW  
DAYS OF STRONG WEST TO SOUTHWEST WINDS, PRIMARILY ON SUNDAY AND  
MONDAY. AT THE MOMENT, WIND PRONE AREAS OF US-395/I-580 IN  
WESTERN NV, NORTHEAST CA, AND INTO MONO COUNTY EACH HAVE A  
LIKELY (>60%) CHANCE FOR GUSTS OF AT LEAST 50 MPH OR GREATER,  
WITH THE 50TH PERCENTILE MAXIMUM WIND GUSTS OF 50-60 MPH. THAT  
SAID, EXPECT A FEW DAYS OF ADVERSE TRAVELING CONDITIONS BY ROAD  
OR AIR, AND DANGEROUS BOATING CONDITIONS ON LOCAL AREA LAKES.  
 
* PRECIPITATION CHANCES WILL BECOME LIKELY IN NORTHEAST CA AND FAR  
NORTHERN WASHOE COUNTY BY MONDAY MORNING. PRECIPITATION MOVES  
SOUTH THROUGH THE REMAINDER OF THE AREA MONDAY INTO TUESDAY. THE  
BEST CHANCES (>60%) FOR PRECIPITATION WILL BE IN THE EASTERN  
SIERRA FROM NORTHERN MONO COUNTY NORTHWARD INTO LASSEN COUNTY.  
THE CHANCES FOR PRECIPITATION FOR THE REMAINDER OF THE AREA  
(W.NV, REST OF MONO COUNTY) DROP TO 30-40%. WE'LL CONTINUE WITH  
THE WET WEATHER THROUGH TUESDAY, WITH SHOWER CHANCES DIMINISHING  
BY EARLY WEDNESDAY. SNOW LEVELS WILL DROP TO AROUND 6,500' ON  
MONDAY (8,000' IN MONO COUNTY), THEN POSSIBLY AS LOW AS 5,500'  
TUESDAY MORNING. ANY SNOW ACCUMULATIONS WILL BE TOUGH TO STICK  
ON THE ROADWAYS GIVEN THE WARM CONDITIONS AHEAD OF THE SYSTEM.  
NONETHELESS, IT WILL FEEL MORE LIKE EARLY MARCH COMPARED TO THE  
LATE JUNE CONDITIONS WE'LL HAVE THE NEXT FEW DAYS. -MCKELLAR  
 

 
   
AVIATION
 
 
AREA TERMINALS WILL SEE VFR CONDITIONS PREVAIL AGAIN TODAY WITH  
LIGHT AFTERNOON BREEZES OUT OF THE WEST-SOUTHWEST. ISOLATED SHOWER/T-  
STORM CHANCES WILL BE LIMITED TO AROUND A 5% CHANCE ALONG THE  
SIERRA CREST DURING THE AFTERNOON HOURS TODAY. MODELS CONTINUE TO  
SHOW A SPRING LOW PRESSURE SYSTEM IN THE FORECAST THIS WEEKEND  
THAT WILL INCREASE WINDS ON SATURDAY AFTERNOON WITH THE POTENTIAL  
FOR STRONG AND GUSTY WINDS FOR SUNDAY AND MONDAY WHICH COULD  
YIELD INCREASED LIKELIHOOD OF MOUNTAIN WAVE TURBULENCE AND LLWS.  
AREA PRECIPITATION CHANCES RETURN BY EARLY MONDAY THAT CONTINUE  
THROUGH TUESDAY. -078  
 

 
   
REV WATCHES/WARNINGS/ADVISORIES
 
 
NV...NONE.  
CA...NONE.  

 
 

 
 
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