895  
FNUS76 KOTX 231856  
FWSOTX  
 
SPOT FORECAST FOR UPPER RENDEZVOUS RX...USFS  
NATIONAL WEATHER SERVICE SPOKANE WA  
1156 AM PDT FRI OCT 23 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 1200 PDT ON OCTOBER 23.    
DISCUSSION
 
 
BREEZY NORTH WINDS WILL RELAX THIS EVENING. THE DRY POST COLD  
FRONT AIRMASS WILL SLOWLY MOISTEN SATURDAY AND WINDS WILL BE MUCH  
LIGHTER. THERE IS A 15% CHANCE OF SNOW SHOWERS IN THE MORNING  
SUNDAY BECOMING 30% CHANCE OF RAIN SHOWERS AROUND 1200.  
PRECIPITATION AMOUNTS TRACE TO 0.05 INCHES.  
 
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
***************************************************************  
FORECASTS FOR 20 FOOT WIND SPEEDS (VALLEYS AND RIDGE TOPS) ARE  
10 MINUTE AVERAGES REFLECTING RAWS WIND.  
***VENTILATION INDEX IS DERIVED FROM TRANSPORT WIND  
MULTIPLIED BY THE MIXING HEIGHT DIVIDED BY 100.  
CATEGORIES: LOW (< 200), MODERATE (200-500),  
HIGH (500-800), AND VERY HIGH (> 800).  
***************************************************************  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....AROUND 47.  
MIN HUMIDITY........23-28 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 6 TO 12 MPH WITH GUSTS TO AROUND  
20 MPH BECOMING NORTH 3 TO 6 MPH AROUND 1800 HOURS.  
MIXING HEIGHT.......3500 FT AGL.  
TRANSPORT WINDS.....NORTH AROUND 16 MPH.  
VENTILATION INDEX...HIGH (553).  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....31.  
MAX HUMIDITY........60-70 PERCENT.  
WIND (20 FT)........VARIABLE WINDS 1-3 MPH.  
MIXING HEIGHT.......FALLING TO NEAR SURFACE AROUND 1900 HOURS.  
TRANSPORT WINDS.....NORTH AROUND 8 MPH IN THE EVENING BECOMING  
LIGHT.  
VENTILATION INDEX...LOW (48).  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY SUNNY BECOMING MOSTLY CLOUDY IN THE AFTERNOON.  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....41.  
MIN HUMIDITY........32-37 PERCENT.  
WIND (20 FT)........UPSLOPE/UPVALLEY/SOUTHEAST WINDS 4 TO 8 MPH.  
MIXING HEIGHT.......1500 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTH AROUND 6 MPH IN THE  
AFTERNOON.  
VENTILATION INDEX...LOW (127).  
 

 
FORECASTER...DB  
REQUESTED BY...AANA KULAAS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2624440.0/OTX  
.DELDT 10/23/26  
.FORMATTERVERSION 2.0.0  
.EMAIL AANA.KULAAS@USDA.GOV  
 
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