359
FNUS75 KBOU 282227
FWSBOU
SPOT FORECAST FOR FAIR PILE RX...USFS
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
327 PM MST WED JAN 28 2026
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A WEAK SYSTEM WILL TRACK ACROSS THE AREA TONIGHT
AND THURSDAY MORNING WITH UP TO 2 INCHES OF SNOW POSSIBLE THROUGH
NOON THURSDAY. THIS SYSTEM IS ALSO EXPECTED TO BRING BREEZY WEST
WINDS WITH GUSTS TO 25 MPH DURING THE AFTERNOON. THESE WINDS ARE
EXPECTED TO PRODUCE FAIR TO GOOD SMOKE DISPERSAL DURING THE
AFTERNOON HOURS THURSDAY.
FOR FRIDAY, A SOMEWHAT MOIST NORTHWEST FLOW ALOFT WILL BRING
CLOUDS AND POSSIBLY FLURRIES. WINDS ARE EXPECTED TO BE STRONG
ENOUGH FOR FAIR SMOKE DISPERSAL FRIDAY. WINDS PICK UP A LITTLE ON
SATURDAY AND ARE EXPECTED TO PRODUCE FAIR TO GOOD SMOKE DISPERSAL.
HIGH PRESSURE ALOFT BUILDS OVER THE REGION SUNDAY AND MONDAY,
LIKELY KEEPING SMOKE DISPERSAL POOR BOTH DAYS.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). SNOW LIKELY.
CWR.................11 PERCENT INCREASING TO 27 PERCENT LATE IN THE
EVENING, THEN DECREASING TO 13 PERCENT EARLY IN
THE MORNING.
CHANCE OF PCPN......60 PERCENT.
MIN TEMPERATURE.....AROUND 11.
MAX HUMIDITY........92 PERCENT.
WIND (20 FT)........WEST WINDS 8 TO 13 MPH, WITH GUSTS TO 25 MPH.
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 2100, THEN 1000 FT AGL.
TRANSPORT WINDS.....WEST 17 TO 23 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........67 77 92 94 97 93 94 97 99 98 96 97
WEATHER COV.....SCH CHC CHC CHC CHC LKY LKY LKY CHC CHC CHC CHC
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN SN SN
TSTM COV........
CWR.............10 10 10 10 10 30 30 30 30 30 30 10
CHC OF PCPN (%).20 30 40 50 50 60 60 60 50 50 50 50
CHC OF THDR (%).M M M M M M M M M M M M
TEMP............19 17 16 15 15 14 14 13 12 12 13 12
RH..............50 55 63 64 69 75 75 82 88 92 86 88
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..9 10 12 12 10 10 10 10 10 10 10 10
20 FT WIND GUST.14 16 18 18 17 16 16 16 16 16 15 16
MIX HGT (KFT)...0.9 0.9 0.9 1.1 1.2 1.3 1.0 1.2 1.3 1.2 1.2 1.2
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.17 17 21 23 22 18 18 18 20 20 20 21
VRATE KT-FT/1K..12 12 15 19 18 19 14 16 18 17 18 18
SMOKEDISPERSION.P P P P P P P P P P P P
THURSDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF SNOW
UNTIL 1400, THEN SLIGHT CHANCE OF SNOW.
CWR.................14 PERCENT.
CHANCE OF PCPN......50 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 19.
MIN HUMIDITY........66 PERCENT.
WIND (20 FT)........WEST WINDS 10 TO 15 MPH. GUSTS UP TO 25 MPH
LATE IN THE MORNING AND AFTERNOON.
MIXING HEIGHT.......3100 FT AGL.
TRANSPORT WINDS.....WEST 20 TO 28 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1000, THEN FAIR UNTIL 1100, THEN
GOOD UNTIL 1600, THEN FAIR UNTIL 1700, THEN
POOR.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........97 93 93 90 84 82 79 73 68 61 56 63
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC CHC SCH SCH SCH SCH
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN SN SN
TSTM COV........
CWR.............10 10 10 10 10 10 10 10 10 10 10 10
CHC OF PCPN (%).50 50 40 40 40 30 30 30 20 20 20 20
CHC OF THDR (%).M M M M M 0 0 0 0 0 0 0
TEMP............12 11 11 12 14 16 17 18 19 19 18 17
RH..............89 89 89 87 82 75 75 72 69 66 67 72
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..10 10 10 10 12 13 14 14 14 14 14 12
20 FT WIND GUST.16 15 16 16 17 20 21 21 21 21 21 17
MIX HGT (KFT)...1.3 1.2 1.6 2.3 2.6 3.0 3.1 3.3 3.4 3.3 2.6 1.8
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.20 20 20 21 22 25 26 28 28 28 25 20
VRATE KT-FT/1K..20 18 25 37 48 62 66 76 78 74 57 27
SMOKEDISPERSION.P P P P F G G G G G F P
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT). SLIGHT CHANCE OF
SNOW.
CWR.................5 PERCENT.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 9 ABOVE.
MAX HUMIDITY........91 PERCENT.
WIND (20 FT)........WEST WINDS 6 TO 13 MPH.
MIXING HEIGHT.......1000 FT AGL UNTIL 1900, THEN BELOW 1000 FT AGL
UNTIL 2300, THEN 1100 FT AGL UNTIL 2400, THEN
BELOW 1000 FT AGL UNTIL 0400, THEN 1000 FT AGL.
TRANSPORT WINDS.....WEST 13 TO 20 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........54 60 73 67 61 55 62 69 76 77 79 80
WEATHER COV.....SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN SN SN
TSTM COV........
CWR.............10 10 10 10 10 10 10 10 10 10 10 10
CHC OF PCPN (%).20 20 20 20 20 20 20 20 20 20 20 20
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............15 12 12 12 12 11 11 11 11 10 10 10
RH..............77 84 86 86 86 85 85 85 85 89 91 91
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..10 8 7 6 6 6 6 6 6 6 6 6
20 FT WIND GUST.16 14 12 10 10 10 10 10 10 10 10 10
MIX HGT (KFT)...1.0 0.9 0.8 0.9 0.9 1.1 0.8 0.9 0.9 0.9 1.0 1.0
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.20 16 15 13 13 14 14 14 13 13 13 13
VRATE KT-FT/1K..16 12 9 9 8 11 9 9 9 9 10 10
SMOKEDISPERSION.P P P P P P P P P P P P
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
SNOW UNTIL 1100, THEN CHANCE OF SNOW UNTIL
1700.
CWR.................7 PERCENT.
CHANCE OF PCPN......30 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MAX TEMPERATURE.....AROUND 22.
MIN HUMIDITY........71 PERCENT.
WIND (20 FT)........WEST WINDS 6 TO 11 MPH. GUSTS UP TO 20 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......2800 FT AGL.
TRANSPORT WINDS.....WEST 9 TO 18 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1300, THEN FAIR UNTIL 1500, THEN
POOR.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........80 81 81 78 75 72 70 69 67 70 73 76
WEATHER COV.....SCH SCH SCH SCH SCH CHC CHC CHC CHC CHC CHC
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN SN
TSTM COV........
CWR.............10 10 10 10 10 10 10 10 10 10 10 0
CHC OF PCPN (%).20 20 20 20 20 30 30 30 30 30 30 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............10 10 11 14 16 19 20 21 21 21 21 20
RH..............91 91 89 82 79 74 73 73 73 73 74 77
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..6 6 6 7 7 8 9 10 10 10 9 8
20 FT WIND GUST.12 12 13 15 16 18 20 20 20 20 20 18
MIX HGT (KFT)...1.0 1.0 1.0 1.5 2.1 2.6 2.8 3.1 3.3 2.7 2.1 1.4
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.12 10 9 12 14 15 16 17 18 17 15 14
VRATE KT-FT/1K..9 8 8 14 22 32 37 42 48 36 25 16
SMOKEDISPERSION.P P P P P P P F F P P P
FORECAST DAYS 3 THROUGH 5
SATURDAY
MOSTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS AROUND 13. HIGHS
IN THE UPPER 20S. WEST WINDS 8 TO 16 MPH.
SUNDAY
PARTLY CLOUDY. LOWS AROUND 13. HIGHS IN THE LOWER 30S. WEST WINDS
5 TO 10 MPH.
MONDAY
MOSTLY CLOUDY. LOWS AROUND 16. HIGHS IN THE MID 30S. WEST WINDS
5 TO 10 MPH.
FORECASTER...MEIER
REQUESTED BY...JOHN.WEIL@USDA.GOV
TYPE OF REQUEST...PRESCRIBED
.TAG 2601073.1/BOU
.DELDT 01/28/26
.FORMATTERVERSION 2.0.0
.EMAIL JOHN.WEIL@USDA.GOV
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