688  
FNUS75 KBOU 101240  
FWSBOU  
 
SPOT FORECAST FOR BLUE RIVER WEST...USFS  
NATIONAL WEATHER SERVICE DENVER/BOULDER CO  
540 AM MST WED DEC 10 2025  
 
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
MORNING SNOW SHOWERS WILL GIVE WAY TO FLURRIES OR  
DRY CONDITIONS IN THE AFTERNOON TODAY. MINIMAL SNOW ACCUMULATION  
IS EXPECTED. WINDS WILL BE BREEZY THROUGHOUT THE DAY WITH GUSTS  
REACHING 40 MPH OUT OF THE WEST. THESE STRONG WINDS AND DECENT  
MIXING HEIGHTS WILL ALLOW FOR GOOD SMOKE DISPERSAL.  
 
THURSDAY WILL BE DRY WITH WARMER CONDITIONS. MIXING HEIGHTS WILL  
BE SLIGHTLY LESS THAN WEDNESDAY WHILE WINDS WILL BE WEAKER WITH  
GUSTS TO 35 MPH. HOWEVER, GOOD SMOKE DISPERSAL IS STILL EXPECTED.  
 
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT). CHANCE OF SNOW  
UNTIL 1700.  
CHANCE OF PCPN......40 PERCENT.  
MAX TEMPERATURE.....AROUND 41.  
MIN HUMIDITY........65 PERCENT.  
WIND (20 FT)........WEST WINDS 17 TO 25 MPH WITH GUSTS TO AROUND 35  
MPH.  
MIXING HEIGHT.......2900 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 28 TO 35 MPH.  
SMOKE DISPERSAL.....GOOD UNTIL 1600, THEN FAIR.  
 
TIME (MST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........62 53 53 53 54 53 53 58  
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC  
WEATHER TYPE....SN SN SN SN SN SN SN  
TSTM COV........  
CHC OF PCPN (%).40 30 30 30 30 30 30 0  
TEMP............37 39 41 40 41 39 37 34  
RH..............72 67 65 67 65 70 72 82  
20 FT WIND DIR..W W W W W W W W  
20 FT WIND SPD..20 21 21 22 22 22 22 22  
20 FT WIND GUST.31 33 33 35 35 35 35 35  
MIX HGT (KFT)...2.8 2.9 3.0 3.0 2.8 2.7 2.0 1.8  
TRANSP WIND DIR.NW NW NW NW NW NW NW NW  
TRANSP WIND SPD.31 33 33 35 33 33 30 28  
VRATE KT-FT/1K..76 84 86 90 82 79 52 44  
SMOKEDISPERSION.G G G G G G F F  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MIN TEMPERATURE.....AROUND 20.  
MAX HUMIDITY........96 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 14 TO 22 MPH WITH GUSTS TO  
AROUND 35 MPH.  
MIXING HEIGHT.......1500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 20 TO 29 MPH UNTIL 0400, THEN 16 TO  
21 MPH.  
SMOKE DISPERSAL.....FAIR UNTIL 1900, THEN POOR.  
 
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........44 34 42 33 32 30 29 29 28 28 28 29  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............32 31 31 30 30 30 29 27 25 24 24 21  
RH..............85 85 85 85 81 78 78 85 88 88 84 96  
20 FT WIND DIR..W NW NW NW NW NW NW NW NW W W W  
20 FT WIND SPD..22 22 22 21 20 20 18 17 16 16 15 14  
20 FT WIND GUST.35 35 35 33 31 31 30 28 25 25 24 22  
MIX HGT (KFT)...1.8 1.5 1.5 1.6 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5  
TRANSP WIND DIR.NW NW NW NW NW NW NW NW NW NW NW W  
TRANSP WIND SPD.28 29 29 29 29 26 25 24 21 20 18 18  
VRATE KT-FT/1K..43 38 38 39 38 35 33 32 27 25 24 24  
SMOKEDISPERSION.F P P P P P P P P P P P  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) UNTIL 1000, THEN  
MOSTLY SUNNY (15-25 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 43.  
MIN HUMIDITY........53 PERCENT.  
WIND (20 FT)........WEST WINDS 12 TO 20 MPH WITH GUSTS TO AROUND 35  
MPH.  
MIXING HEIGHT.......2800 FT AGL.  
TRANSPORT WINDS.....WEST 20 TO 29 MPH UNTIL 1100, THEN NORTHWEST 28  
TO 37 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900, THEN FAIR UNTIL 1100, THEN  
GOOD UNTIL 1600, THEN FAIR.  
 
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........37 45 43 33 23 13 13 13 13 15 16 18  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............23 24 25 33 38 41 43 43 42 41 38 35  
RH..............84 84 88 72 64 57 53 53 53 53 54 56  
20 FT WIND DIR..W W W W W W W W W W W W  
20 FT WIND SPD..14 14 14 15 15 16 17 17 17 16 16 15  
20 FT WIND GUST.22 22 22 24 24 25 28 28 28 35 33 32  
MIX HGT (KFT)...1.5 1.5 1.6 1.9 2.2 2.5 2.6 2.7 2.8 2.5 2.2 1.9  
TRANSP WIND DIR.W W W NW W W NW NW NW NW NW NW  
TRANSP WIND SPD.20 20 22 25 29 31 33 36 37 33 31 28  
VRATE KT-FT/1K..25 25 30 43 54 68 74 82 90 73 58 45  
SMOKEDISPERSION.P P P F F G G G G G F F  
 

 
FORECASTER...DANIELSON  
REQUESTED BY...PRESTON BURNS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2527334.0/BOU  
.DELDT 12/10/25  
.FORMATTERVERSION 2.0.0  
.EMAIL PRESTON.BURNS@USDA.GOV  
 
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