611
FNUS75 KCYS 221311
FWSCYS
SPOT FORECAST FOR BUCK/OBSIDIAN RX...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
611 AM MST THU JAN 22 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
STRONG ARCTIC COLD FRONT WILL PUSH SOUTH INTO SOUTHEAST WYOMING LATER
TODAY AND MAINLY TONIGHT. THIS FRONT IS EXPECTED TO STALL NEAR THE
MOUNTAINS, INCLUDING THE BURN AREA, TONIGHT. ACCUMULATING SNOW
WILL DEVELOP ON FRIDAY AS THE ARCTIC FRONT FINALLY MOVES SOUTH INTO
COLORADO, BRINGING THE COLDEST AIR SO FAR THIS WINTER SEASON.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....30 TO 35 DEGREES.
MIN HUMIDITY........30 TO 40 PERCENT.
WIND (20 FT)........WEST WINDS 8 TO 16 MPH. GUSTS 21 TO 31 MPH
IN THE MORNING.
MIXING HEIGHT.......3600 FT AGL.
TRANSPORT WINDS.....WEST 16 TO 25 MPH.
SMOKE DISPERSAL.....GOOD (78100 KNOT-FT) IN THE AFTERNOON.
TIME (MST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........25 35 35 35 68 68 68 72 72 72 77
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0
TEMP............14 16 23 26 29 29 30 31 30 28 25
RH..............55 51 38 33 29 31 31 30 31 35 40
20 FT WIND DIR..W W W W W W W W W W W
20 FT WIND SPD..16 15 13 12 12 12 12 12 10 9 8
20 FT WIND GUST.31 28 25 23 21 21 21 21 20 17 16
MIX HGT (KFT)...0.8 0.9 1.5 2.2 2.8 2.9 3.4 3.6 3.3 2.8 1.1
TRANSP WIND DIR.W W W W W W W W W W W
TRANSP WIND SPD.20 18 20 21 23 23 24 25 25 22 16
SDSPL KT-FT/100012 14 26 40 56 59 71 78 73 53 15
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SLIGHT CHANCE OF
SNOW EARLY IN THE MORNING.
CWR.................5 PERCENT.
MIN TEMPERATURE.....AROUND 10 ABOVE ZERO TOWARDS SUNRISE.
MAX HUMIDITY........70 TO 85 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 10 MPH BECOMING LIGHT AND
VARIABLE OVERNIGHT.
MIXING HEIGHT.......600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 9 TO 15 MPH.
SMOKE DISPERSAL.....POOR (5100 KNOT-FT).
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........77 77 77 77 77 79 79 79 79 79 79 85
WEATHER COV..... SCH
WEATHER TYPE.... SN
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 10
TEMP............21 21 20 19 18 17 17 15 15 14 13 12
RH..............47 47 49 51 53 56 56 61 61 64 67 73
20 FT WIND DIR..W SW SW SW S S S S S S S SW
20 FT WIND SPD..7 7 7 6 6 6 6 6 6 6 6 5
20 FT WIND GUST.14 13 13 12 12 10 10 10 10 12 12 12
MIX HGT (KFT)...0.9 0.7 0.7 0.7 0.7 0.6 0.7 0.6 0.7 0.7 0.7 0.8
TRANSP WIND DIR.W W W W W SW SW SW SW SW SW SW
TRANSP WIND SPD.15 12 10 12 10 9 10 9 9 10 10 12
SDSPL KT-FT/100011 7 7 7 6 5 6 5 5 6 6 8
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). SLIGHT CHANCE OF
SNOW IN THE MORNING, THEN SNOW LIKELY LATE IN THE
AFTERNOON.
CWR.................5 PERCENT INCREASING TO 30 PERCENT LATE IN THE
MORNING.
MAX TEMPERATURE.....20 TO 26 DEGREES.
MIN HUMIDITY........35 TO 45 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE, SHIFTING TO THE
NORTH AROUND 10 MPH IN THE AFTERNOON.
MIXING HEIGHT.......3100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 7 TO 16 MPH SHIFTING TO THE NORTHWEST
AROUND 7 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR (43300 KNOT-FT).
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........85 85 89 89 89 86 86 86 89 89 89 89
WEATHER COV.....SCH SCH SCH SCH SCH CHC CHC CHC CHC CHC CHC LKY
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 30
TEMP............12 11 15 20 22 24 23 23 23 19 16 13
RH..............70 76 64 49 45 41 45 47 50 62 73 84
20 FT WIND DIR..SW S S SW SW W W W W NW NW NW
20 FT WIND SPD..5 5 5 6 6 7 7 7 7 7 7 6
20 FT WIND GUST.12 12 12 10 12 12 13 15 15 14 13 10
MIX HGT (KFT)...0.7 0.7 0.8 1.3 2.0 2.7 3.0 3.1 2.9 2.4 1.9 1.4
TRANSP WIND DIR.SW SW SW SW W W W W W W NW NW
TRANSP WIND SPD.7 8 8 12 13 13 15 16 17 15 10 7
SDSPL KT-FT/10004 5 6 13 22 30 40 43 43 32 17 9
REQUESTED BY...COYDE FICKEL
TYPE OF REQUEST...PRESCRIBED
.TAG 2600360.2/CYS
.DELDT 01/22/26
.FORMATTERVERSION 2.0.0
.EMAIL COYDE.FICKEL@USDA.GOV
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