020  
FNUS76 KOTX 280356  
FWSOTX  
 
SPOT FORECAST FOR GRANDE FIRE...NE WA IMT #1  
NATIONAL WEATHER SERVICE SPOKANE WA  
856 PM PDT WED AUG 27 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 0500 PDT ON AUGUST 28.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
 
WINDS WILL BE MOSTLY SOUTHERLY WITH GUSTS TO 10 MPH THROUGH EARLY  
THURSDAY MORNING BEFORE STAYING LIGHT THROUGH THE REST OF THE  
PERIOD. COOLER TEMPERATURES EXPECTED THURSDAY, WITH TEMPERATURES  
DROPPING ALMOST 10 DEGREES. SHOWER AND THUNDERSTORM CHANCES  
INCREASE TOMORROW, PARTICULARLY IN THE AFTERNOON. THUNDERSTORM  
CHANCES CONTINUE FRIDAY AFTERNOON AND EVENING. PRECIP AMOUNTS  
RANGE FROM 0.05-0.13".  
   
THURSDAY  
 
SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF SHOWERS THROUGH THE  
DAY. SLIGHT CHANCE OF THUNDERSTORMS IN THE  
AFTERNOON.  
CWR.................15 PERCENT.  
CHANCE OF LIGHTNING.20 PERCENT.  
MAX TEMPERATURE.....AROUND 73.  
MIN HUMIDITY........48 PERCENT.  
WIND (20 FT)........SOUTH WINDS AROUND 4 TO 8 MPH SHIFTING TO THE  
SOUTHEAST 8 TO 14 MPH IN THE AFTERNOON. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS  
IN THE AFTERNOON.  
MIXING HEIGHT.......NEAR SURFACE INCREASING TO 6000 FT AGL IN THE  
AFTERNOON.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
   
THURSDAY NIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING.  
CWR.................5 PERCENT.  
CHANCE OF LIGHTNING.20 PERCENT.  
MIN TEMPERATURE.....AROUND 59.  
MAX HUMIDITY........72 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS AROUND 3 TO 6 MPH SHIFTING TO  
THE EAST OVERNIGHT. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS IN THE EVENING.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH IN THE EVENING BECOMING  
LIGHT.  
 
 
FORECASTER...JCLEV  
REQUESTED BY...JESSICA WALSTON  
TYPE OF REQUEST...WILDFIRE  
.TAG 2520874.0/OTX  
.DELDT 08/27/25  
.FORMATTERVERSION 2.0.0  
.EMAIL JESSICA.WALSTON@DNR.WA.GOV  
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