019  
FNUS75 KREV 201235  
FWSREV  
 
SPOT FORECAST FOR BIG HILL 29...USFS  
NATIONAL WEATHER SERVICE RENO NV  
535 AM PDT TUE MAY 20 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0600 PDT ON MAY 20.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL  
WEATHER SERVICE IN RENO.  
   
DISCUSSION
 
 
* WARMING AND DRYING TREND LOOKS TO CONTINUE TODAY.  
 
* OVERNIGHT RELATIVE HUMIDITIES WILL DECLINE BY MIDWEEK, WITH  
DECENT RECOVERIES EACH AFTERNOON.  
 
* THE LATEST FORECAST CALLS FOR SLIGHTLY COOLER TEMPERATURES ON  
THURSDAY AND FRIDAY WITH BREEZY WEST-SOUTHWESTERLY WINDS GUSTING  
UP TO AROUND 20 MPH IN THE AFTERNOON.  
   
TODAY
 
 
SKY/WEATHER.........SUNNY.  
TEMPERATURE.........41-43 AT IGNITION...MAX 75-76.  
RH..................67-73% AT IGNITION...MIN 19-22%.  
20-FOOT WINDS.......WINDS SOUTHEAST AT 2 MPH AT  
IGNITION...OTHERWISE UPSLOPE 3-7 MPH BECOMING  
WEST 7-8 MPH GUSTING UP TO AROUND 15 MPH BY  
1400 PDT.  
CHC WETTING RAIN....0%.  
CHANCE OF THUNDER...0%.  
MIXING HEIGHT.......6400-7500 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS BECOMING WEST AROUND 10 MPH IN THE  
LATE MORNING AND AFTERNOON.  
VENTILATION.........MARGINAL TO VERY GOOD.  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR.  
TEMPERATURE.........MIN 42-43.  
RH..................MAX 55-60%.  
20-FOOT WINDS.......WEST WINDS 7-8 MPH EARLY IN THE EVENING  
BECOMING LIGHT AROUND 2000 PDT.  
CHC WETTING RAIN....0%.  
CHANCE OF THUNDER...0%.  
MIXING HEIGHT.......1700-2800 FT AGL.  
TRANSPORT WINDS.....WEST 10-15 MPH EARLY IN THE EVENING  
BECOMING LIGHT.  
VENTILATION.........VERY GOOD TO POOR.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
TEMPERATURE.........MAX 80-81.  
RH..................MIN 17-19%.  
20-FOOT WINDS.......UPSLOPE 3-7 MPH BECOMING WEST 5-10 MPH GUSTING  
UP TO AROUND 15 MPH BY 1100 PDT  
CHC WETTING RAIN....0%.  
CHANCE OF THUNDER...0%.  
MIXING HEIGHT.......7200-8600 FT AGL.  
TRANSPORT WINDS.....EAST AROUND 10 MPH IN THE MORNING BECOMING  
LIGHT, THEN BECOMING WEST AROUND 10 MPH LATE IN  
THE AFTERNOON.  
VENTILATION.........MARGINAL TO VERY GOOD.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
 
CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. SOUTHWEST  
WINDS AROUND 7 MPH.    
FRIDAY
 
 
CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S. SLOPE  
WINDS.    
SATURDAY
 
 
CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 70S. SLOPE  
WINDS.    
SUNDAY
 
 
CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID 80S.    
MEMORIAL DAY
 
 
CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S.  
 

 
FORECASTER...CHYBA/CRESPO  
REQUESTED BY...CHRIS ENRIQUEZ  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2512202.13/REV  
.DELDT 05/20/25  
.FORMATTERVERSION 2.0.0  
.EMAIL ROMAN.RODRIGUEZ@USDA.GOV,CHRISTOPHER.VOELKER@USDA.GOV,CHRISTIAN.ENRIQUEZ@USDA.GOV  
 
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