926  
FNUS75 KGJT 240106  
FWSGJT  
 
SPOT FORECAST FOR MIDDLE FORK...CRAIG DISPATCH  
NATIONAL WEATHER SERVICE GRAND JUNCTION CO  
706 PM MDT WED SEP 23 2020  
 
FORECAST IS BASED ON FORECAST START TIME OF 1800 MDT ON SEPTEMBER 23.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH  
FRIDAY EVENING...  
   
DISCUSSION
 
A PAIR OF DISTURBANCES, ONE THURSDAY AND THE OTHER  
FRIDAY, WILL GENERATE GUSTY SOUTHWEST WINDS EACH AFTERNOON INTO  
EARLY EVENING. THE STRONGEST WINDS ARE EXPECTED FRIDAY WHICH MAY  
COMBINE WITH LOW RELATIVE HUMIDITY AND DRY FUELS TO BRING CRITICAL  
FIRE WEATHER CONDITIONS DURING THE AFTERNOON AND EARLY IN THE  
EVENING. EXPECT FEW CLOUDS AND NO PRECIPITATION THROUGH THE END OF  
THE WEEK WITH ABOVE NORMAL TEMPERATURES.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (10-20%).  
MIN TEMPERATURE.....43-48 F.  
MAX HUMIDITY........36-41%.  
WIND (20 FT)........SOUTHWEST WINDS 3 TO 7 MPH THROUGH 1900, THEN  
BECOMING DOWNSLOPE BY 2100.  
SMOKE DISPERSAL.....DECREASING TO POOR (3000 KNOT-FT) OVERNIGHT.  
HAINES INDEX........4 OR LOW.  
LAL.................1.  
MIXING HEIGHT.......DECREASING TO 900 FT AGL OVERNIGHT.  
TRANSPORT WINDS.....NORTHWEST 17 MPH BECOMING SOUTHEAST 5 MPH  
OVERNIGHT.  
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY (0-10%).  
MAX TEMPERATURE.....68-73 F.  
MIN HUMIDITY........14-19%.  
WIND (20 FT)........DOWNSLOPE 3 TO 6 MPH THROUGH 0900, TRANSITIONING  
TO UPSLOPE BY 1100. DEEPENING MIXED LAYER BRINGS  
SOUTHWEST WINDS 7 TO 12 MPH WITH GUSTS UP TO 20  
MPH FROM 1300 ONWARD.  
SMOKE DISPERSAL.....INCREASING TO EXCELLENT IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW.  
LAL.................1.  
MIXING HEIGHT.......INCREASING TO 8200 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 15 MPH.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........CLEAR (0-10%).  
MIN TEMPERATURE.....47-52 F.  
MAX HUMIDITY........29-34%.  
WIND (20 FT)........BECOMING DOWNSLOPE 3 TO 6 MPH BY 2100.  
SMOKE DISPERSAL.....DECREASING TO POOR (5000 KNOT-FT) OVERNIGHT.  
HAINES INDEX........4 OR LOW.  
LAL.................1.  
MIXING HEIGHT.......DECREASING TO 600 FT AGL OVERNIGHT.  
TRANSPORT WINDS.....SOUTHWEST 22 MPH DECREASING TO 10 MPH OVERNIGHT.  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY (0-10%).  
MAX TEMPERATURE.....68-73 F.  
MIN HUMIDITY........13-18%.  
WIND (20 FT)........DOWNSLOPE 3 TO 6 MPH THROUGH 0900, TRANSITIONING  
TO UPSLOPE BY 1100. SOUTHWEST WINDS DEVELOP BY  
NOON AND INCREASE TO 12 TO 17 WITH GUSTS TO 30 MPH  
EARLY IN THE AFTERNOON.  
SMOKE DISPERSAL.....EXCELLENT.  
HAINES INDEX........4 OR LOW.  
LAL.................1.  
MIXING HEIGHT.......INCREASING TO 9100 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....WEST 33 MPH.  
 

 
 
FORECASTER...NORV LARSON  
REQUESTED BY...DERRICK CHARPENTIER  
TYPE OF REQUEST...WILDFIRE  
.TAG 2012922.1/GJT  
.DELDT 09/23/20  
.FORMATTERVERSION 1.0.26  
.EMAIL COCRC@FIRENET.GOV  
 
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