732  
FNUS75 KREV 250504  
FWSREV  
 
SPOT FORECAST FOR CASA DIABLO RX...USFS  
NATIONAL WEATHER SERVICE RENO NV  
1004 PM PDT SUN MAY 24 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 0600 PDT ON MAY 25.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL  
WEATHER SERVICE IN RENO.  
   
DISCUSSION  
 
* A 20% CHANCE OF SHOWERS ACCOMPANIES A 15% CHANCE FOR EMBEDDED  
LIGHTNING TODAY. TUESDAY, A BREAK IN SHOWERS IS TRADED FOR GUSTY  
WESTERLY WINDS UP TO 30 MPH.  
 
* SHOWER CHANCES RETURN AND INCREASE FOR WEDNESDAY, WITH 80%  
CHANCES FOR SHOWERS, A 20% CHANCE OF LIGHTNING, AND SNOW LEVELS  
AROUND 7000-7500 FEET. SNOW MAY MIX INTO RAIN, BUT ACCUMULATION  
WILL BE LIMITED TO THE HIGHEST PEAKS.  
 
* SHOWERS LINGER INTO THURSDAY, WITH A WARMING AND DRYING TREND  
EMERGING FOR THE WEEKEND.  
   
MEMORIAL DAY  
 
SKY/WEATHER.........SUNNY THEN BECOMING PARTLY CLOUDY. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
AFTERNOON.  
TEMPERATURE.........45-48 AT IGNITION...MAX 74-76.  
RH..................68-73% AT IGNITION...MIN 25-30%.  
20-FOOT WINDS.......WINDS NORTHWEST AT 3 MPH AT  
IGNITION...OTHERWISE 3-7 MPH BECOMING  
SOUTHEAST 7-8 MPH LATE IN THE MORNING, THEN  
SHIFTING TO THE SOUTH 7-9 MPH LATE IN THE  
AFTERNOON SHIFTING TO THE SOUTHWEST LATE IN THE  
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE AFTERNOON.  
CHC WETTING RAIN....0%.  
CHANCE OF THUNDER...15%.  
MIXING HEIGHT.......3800-8500 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTHWEST AROUND 10 MPH IN  
THE AFTERNOON.  
VENTILATION.........POOR TO VERY GOOD.  
   
MONDAY NIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY.  
TEMPERATURE.........MIN 40-43.  
RH..................MAX 65-70%.  
20-FOOT WINDS.......SOUTHWEST WINDS 7-9 MPH SHIFTING TO THE  
NORTHWEST EARLY IN THE EVENING.  
CHC WETTING RAIN....0%.  
CHANCE OF THUNDER...0%.  
MIXING HEIGHT.......200-500 FT AGL THEN 600 FT AGL OVERNIGHT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
VENTILATION.........EXCELLENT TO POOR.  
   
TUESDAY  
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING SUNNY.  
TEMPERATURE.........MAX 64-67.  
RH..................MIN 21%.  
20-FOOT WINDS.......NORTHWEST WINDS 7-9 MPH INCREASING TO SOUTHWEST  
11-16 MPH EARLY IN THE MORNING, THEN SHIFTING  
TO THE WEST LATE IN THE AFTERNOON.  
CHC WETTING RAIN....0%.  
CHANCE OF THUNDER...0%.  
MIXING HEIGHT.......3500-7500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 15-20 MPH.  
VENTILATION.........POOR TO VERY GOOD INCREASING TO EXCELLENT IN  
THE AFTERNOON.  
 
 
FORECASTER...RICHARDS  
REQUESTED BY...TRAVIS WHITE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2614292.1/REV  
.DELDT 05/25/26  
.FORMATTERVERSION 2.0.0  
.EMAIL ANDREW.CLARK2@USDA.GOV,TRAVIS.WHITE@USDA.GOV  
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