199  
FNUS75 KREV 240439  
FWSREV  
 
SPOT FORECAST FOR CASA DIABLO RX...USFS  
NATIONAL WEATHER SERVICE RENO NV  
939 PM PDT SAT MAY 23 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 0600 PDT ON MAY 24.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL  
WEATHER SERVICE IN RENO.  
   
DISCUSSION
 
 
* SHOWER CHANCES OF AROUND 30% WITH LIGHTNING CHANCES NEAR 20%  
TODAY AT THE BURN SITE.  
 
* GUSTS WILL BE AROUND 15-20 MPH, WITH POTENTIAL FOR GUSTY  
ERRATIC THUNDERSTORM OUTFLOWS.  
 
* SHOWER CHANCES RETURN FOR MONDAY, AROUND 20-25%, WITH A 10%  
CHANCE OF LIGHTNING.  
   
SUNDAY
 
 
SKY/WEATHER.........SUNNY THEN BECOMING MOSTLY CLOUDY. CHANCE OF  
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN  
THE AFTERNOON.  
TEMPERATURE.........46-48 AT IGNITION...MAX 73-75.  
RH..................60-65% AT IGNITION...MIN 23-26%.  
20-FOOT WINDS.......WINDS NORTHWEST AT 5 MPH AT  
IGNITION...3-7 MPH BECOMING SOUTHEAST 7-8 MPH  
LATE IN THE MORNING, THEN SHIFTING TO THE  
SOUTHWEST 7-9 MPH LATE IN THE AFTERNOON.  
GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE AFTERNOON.  
CHC WETTING RAIN....0%.  
CHANCE OF THUNDER...20%.  
MIXING HEIGHT.......200-500 FT AGL THEN 8700 FT AGL IN THE  
AFTERNOON.  
TRANSPORT WINDS.....EAST AROUND 10 MPH SHIFTING TO THE SOUTH IN THE  
AFTERNOON.  
VENTILATION.........POOR TO VERY GOOD.  
   
SUNDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING CLEAR. SLIGHT  
CHANCE OF SHOWERS IN THE EVENING.  
TEMPERATURE.........MIN 44-46.  
RH..................MAX 65-70%.  
20-FOOT WINDS.......SOUTHWEST WINDS 7-9 MPH SHIFTING TO THE  
NORTHWEST AROUND 7 MPH EARLY IN THE EVENING,  
THEN BECOMING LIGHT LATE IN THE EVENING.  
CHC WETTING RAIN....5%.  
CHANCE OF THUNDER...10%.  
MIXING HEIGHT.......600 FT AGL IN THE EVENING.  
TRANSPORT WINDS.....WEST AROUND 10 MPH IN THE EVENING BECOMING  
LIGHT.  
VENTILATION.........GOOD TO POOR.  
   
MEMORIAL DAY
 
 
SKY/WEATHER.........SUNNY THEN BECOMING PARTLY CLOUDY. SLIGHT  
CHANCE OF SHOWERS IN THE AFTERNOON.  
TEMPERATURE.........MAX 72-74.  
RH..................MIN 20-25%.  
20-FOOT WINDS.......SOUTHEAST 7-8 MPH LATE IN THE MORNING,  
THEN SHIFTING TO THE SOUTH LATE  
IN THE AFTERNOON SHIFTING TO THE WEST LATE IN  
THE AFTERNOON.  
CHC WETTING RAIN....5%.  
CHANCE OF THUNDER...10%.  
MIXING HEIGHT.......200-500 FT AGL THEN 9000 FT AGL IN THE  
AFTERNOON.  
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTH AROUND 10 MPH IN THE  
AFTERNOON.  
VENTILATION.........POOR TO VERY GOOD.  
 

 
FORECASTER...RICHARDS  
REQUESTED BY...TRAVIS WHITE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2614292.0/REV  
.DELDT 05/24/26  
.FORMATTERVERSION 2.0.0  
.EMAIL TRAVIS.WHITE@USDA.GOV,ANDREW.CLARK2@USDA.GOV  
 
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