144  
FNUS75 KBOU 281707  
FWSBOU  
 
SPOT FORECAST FOR LILY LAKE PILE BURN...NPS  
NATIONAL WEATHER SERVICE DENVER/BOULDER CO  
1007 AM MST TUE JAN 28 2025  
 
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
AN APPROACHING STORM SYSTEM WILL BRING A CHANCE OF SNOW  
SHOWERS WEDNESDAY NIGHT INTO THURSDAY. SNOW ACCUMULATION LOOKS TO BE  
LIGHT WITH LESS THAN AN INCH EXPECTED. BETTER MIXING AND INCREASED  
WINDS OUT OF THE NORTHWEST SHOULD LEAD TO BETTER SMOKE DISPERSAL  
THURSDAY AFTERNOON.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT) UNTIL 1600, THEN  
PARTLY CLOUDY (20-30 PERCENT).  
CHANCE OF PCPN......10 PERCENT.  
MAX TEMPERATURE.....AROUND 35.  
MIN HUMIDITY........41 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 4 TO 8 MPH UNTIL 1000, THEN  
SOUTHEAST 5 TO 10 MPH.  
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 1000, THEN RISING TO  
2500 FT AGL BY 1300.  
TRANSPORT WINDS.....SOUTH 10 MPH UNTIL 1200, THEN SOUTHEAST 12 MPH.  
SMOKE DISPERSAL.....POOR.  
 
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........15 17 17 16 17 21 19 20 21 25 26 22  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 10 10 10 10 10 10 10  
TEMP............15 16 19 23 28 32 34 35 34 32 29 26  
RH..............64 58 54 52 46 43 41 41 47 53 60 68  
20 FT WIND DIR..SW SW SW SW S SE SE SE E SE S SW  
20 FT WIND SPD..5 5 5 5 6 6 6 6 5 3 2 2  
20 FT WIND GUST.7 8 8 8 7 8 9 10 10 9 7 8  
MIX HGT (KFT)...0.6 0.6 0.6 0.8 1.2 1.8 2.2 2.4 2.6 1.9 1.3 0.6  
TRANSP WIND DIR.S S S S SE SE SE SE SE SE S S  
TRANSP WIND SPD.9 10 10 8 10 12 12 13 13 10 9 7  
VRATE KT-FT/1K..5 6 5 6 11 18 22 25 29 18 10 4  
SMOKEDISPERSION.P P P P P P P P P P P P  
   
WEDNESDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). SLIGHT CHANCE OF  
SNOW.  
CHANCE OF PCPN......30 PERCENT.  
MIN TEMPERATURE.....AROUND 19.  
MAX HUMIDITY........77 PERCENT.  
WIND (20 FT)........VARIABLE UP TO 5 MPH UNTIL 1900, THEN WEST  
5-10 MPH.  
MIXING HEIGHT.......BELOW 1000 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 8 MPH UNTIL 1900, THEN BECOMING  
NORTHWEST 15 MPH BY 2200.  
SMOKE DISPERSAL.....POOR.  
 
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........23 25 26 27 27 28 32 35 39 43 47 51  
WEATHER COV..... SCH SCH SCH SCH SCH SCH CHC  
WEATHER TYPE.... SN SN SN SN SN SN SN  
TSTM COV........  
CHC OF PCPN (%).10 10 10 10 10 20 20 20 20 20 20 30  
TEMP............23 21 20 19 19 20 21 22 23 23 22 21  
RH..............74 77 77 77 74 71 68 65 62 62 65 68  
20 FT WIND DIR..SW W W W NW NW NW NW NW NW NW NW  
20 FT WIND SPD..2 3 3 3 3 3 3 5 5 5 5 5  
20 FT WIND GUST.8 9 9 9 10 10 10 12 12 13 14 15  
MIX HGT (KFT)...0.6 0.6 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7  
TRANSP WIND DIR.S W W NW NW N N N N N N N  
TRANSP WIND SPD.8 8 9 10 10 12 13 13 14 15 15 16  
VRATE KT-FT/1K..4 5 5 6 6 7 7 8 8 8 9 9  
SMOKEDISPERSION.P P P P P P P P P P P P  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (45-55 PERCENT) UNTIL 1100, THEN  
PARTLY CLOUDY (35-45 PERCENT). CHANCE OF SNOW  
UNTIL 1100, THEN SLIGHT CHANCE OF SNOW.  
CHANCE OF PCPN......30 PERCENT.  
MAX TEMPERATURE.....AROUND 36.  
MIN HUMIDITY........35 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 6 TO 12 MPH WITH GUSTS TO AROUND  
20 MPH UNTIL 1000, INCREASING TO 8 TO 16 MPH WITH GUSTS TO  
AROUND 25 MPH.  
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900, THEN RISING TO 3500 FT AGL  
BY 1200.  
TRANSPORT WINDS.....NORTH 20 TO 25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1000, THEN FAIR UNTIL 1100, THEN  
GOOD UNTIL 1500, THEN FAIR UNTIL 1600, THEN  
POOR.  
 
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........51 51 51 51 51 47 42 38 33 33 33 7  
WEATHER COV.....CHC CHC CHC CHC CHC SCH SCH SCH SCH SCH SCH  
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN SN  
TSTM COV........  
CHC OF PCPN (%).30 30 30 30 30 20 20 20 20 20 20 0  
TEMP............21 21 23 25 28 32 34 36 36 35 32 29  
RH..............65 62 54 50 44 39 38 35 36 38 43 48  
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW NW W  
20 FT WIND SPD..5 6 7 8 9 10 10 10 9 8 7 7  
20 FT WIND GUST.16 18 21 24 26 29 29 28 26 24 21 20  
MIX HGT (KFT)...0.7 0.6 0.6 1.6 2.6 3.6 3.7 3.7 3.8 2.8 1.7 0.7  
TRANSP WIND DIR.N N N N N N N N N N NW NW  
TRANSP WIND SPD.17 17 18 22 24 28 28 26 26 23 20 16  
VRATE KT-FT/1K..10 10 10 30 56 87 87 87 88 55 29 10  
SMOKEDISPERSION.P P P P F G G G G F P P  
   
FORECAST DAYS 3 THROUGH 5
 
   
FRIDAY
 
 
MOSTLY CLEAR. LOWS AROUND 18. HIGHS AROUND 40. WEST WINDS AROUND  
10 MPH.    
SATURDAY
 
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS IN THE UPPER 20S.  
HIGHS AROUND 40. WEST WINDS AROUND 15 MPH.    
SUNDAY
 
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS IN THE LOWER 30S.  
HIGHS IN THE LOWER 40S. WEST WINDS AROUND 14 MPH.  
 

 
FORECASTER...GIMMESTAD  
REQUESTED BY...CHELSEA MARTUS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2501568.0/BOU  
.DELDT 01/28/25  
.FORMATTERVERSION 2.0.0  
.EMAIL CMARTUS.NPS@GMAIL.COM  
 
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