829  
FNUS75 KGJT 181505  
FWSGJT  
 
SPOT FORECAST FOR ALPINE PILES...USFS  
NATIONAL WEATHER SERVICE GRAND JUNCTION CO  
805 AM MST THU DEC 18 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0600 MST ON DECEMBER 18.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
GUSTY WINDS ARE EXPECTED THROUGH THE FORECAST PERIOD. TODAY GUSTS  
UP TO 25 MPH ARE EXPECTED, AND ON FRIDAY STRONGER GUSTS UP TO 30  
MPH ARE POSSIBLE. SMOKE DISPERSAL SHIFTS FROM POOR TO FAIR THIS  
MORNING, WITH GOOD DISPERSAL AROUND 1000 MST.  
   
TODAY
 
 
SKY/WEATHER.........SUNNY (10-20 PERCENT).  
CWR.................0 PERCENT.  
MAX TEMPERATURE.....31-36.  
MIN HUMIDITY........27-32 PERCENT.  
WIND (20 FT)........WEST WINDS 10-15 MPH WITH GUSTS TO AROUND 25 MPH.  
SMOKE DISPERSAL.....FAIR INCREASING TO GOOD (45000-67000 KNOT-FT).  
MIXING HEIGHT.......INCREASING TO 2000 FT AGL BY 1200.  
TRANSPORT WINDS.....WEST 23-28 MPH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).  
CWR.................0 PERCENT.  
MIN TEMPERATURE.....21-26.  
MAX HUMIDITY........71-76 PERCENT.  
WIND (20 FT)........WEST WINDS 10 MPH WITH GUSTS TO AROUND 25 MPH.  
SMOKE DISPERSAL.....POOR (7000-8000 KNOT-FT).  
MIXING HEIGHT.......DECREASING TO 500 FT AGL BY 1800.  
TRANSPORT WINDS.....WEST 20 MPH.  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY (10-20 PERCENT).  
CWR.................0 PERCENT.  
MAX TEMPERATURE.....43-48.  
MIN HUMIDITY........30-35 PERCENT.  
WIND (20 FT)........WEST WINDS 15 MPH WITH GUSTS TO AROUND 30 MPH.  
SMOKE DISPERSAL.....INCREASING TO FAIR AROUND 1200.  
MIXING HEIGHT.......INCREASING TO 1800 FT AGL BY 1400.  
TRANSPORT WINDS.....WEST 34 MPH.  
 

 
FORECASTER...LUCAS BOYER  
REQUESTED BY...CARL HANLEY  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2527532.3/GJT  
.DELDT 12/18/25  
.FORMATTERVERSION 2.0.0  
.EMAIL JACK.STARKEBAUM@USDA.GOV,DAVID.CARR@USDA.GOV,CARLIE.GENTRY@USDA.GOV,CARL.HANLEY@USDA.GOV,BENJIMAN.SMITH@USDA.GOV,TREVOR.KEENAN@USDA.GOV,JASON.HOLTON@USDA.GOV,PAUL.DZEIKAN@USDA.GOV  
 
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