203
FNUS75 KCYS 202344
FWSCYS
SPOT FORECAST FOR BUCK/OBSIDIAN RX...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
444 PM MST TUE JAN 20 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
A SURFACE COLD FRONT WILL HAVE PUSHED TO THE SOUTH, LITTLE TO NO
PRECIPITATION ASSOCIATED WITH IT. COLDER TEMPERATURES AND MIN RH
VALUES GENERALLY ABOVE 25% FOR THIS FORECAST PERIOD WITH GOOD
OVERNIGHT RECOVERY.
WEDNESDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 33.
MIN HUMIDITY........27 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 12 TO 16 MPH.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 24 TO 33 MPH SHIFTING TO THE WEST 30
TO 37 MPH LATE IN THE AFTERNOON, THEN
DECREASING TO AROUND 24 MPH LATE IN THE
AFTERNOON.
SMOKE DISPERSAL.....POOR (20300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO VERY GOOD (110300 KNOT-FT) IN THE
AFTERNOON INCREASING TO POOR (24900 KNOT-FT)
EARLY IN THE MORNING INCREASING TO VERY GOOD
(123500 KNOT-FT) IN THE AFTERNOON IN THE
AFTERNOON.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........8 8 6 6 6 14 14 14 32 32 32 34
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............13 13 15 21 26 29 32 33 32 30 28 23
RH..............61 58 53 41 33 31 27 27 28 31 33 41
20 FT WIND DIR..SW SW SW SW SW W W W W W W W
20 FT WIND SPD..13 12 12 13 13 14 15 16 16 15 13 12
20 FT WIND GUST.23 23 23 24 25 26 28 29 30 28 24 22
MIX HGT (KFT)...0.9 1.0 1.2 1.7 2.5 3.3 3.8 4.0 3.8 3.0 2.0 1.2
TRANSP WIND DIR.SW SW SW SW W W W W W W W W
TRANSP WIND SPD.25 24 25 28 30 31 33 36 37 33 30 24
SDSPL KT-FT/100020 21 26 42 66 89 110 124 121 88 53 25
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 15.
MAX HUMIDITY........56 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 10 MPH.
MIXING HEIGHT.......800 FT AGL.
TRANSPORT WINDS.....WEST 17 TO 24 MPH.
SMOKE DISPERSAL.....POOR (14200 KNOT-FT).
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........41 37 47 46 47 52 55 57 56 56 55 56
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............20 19 19 17 17 17 17 17 16 16 15 15
RH..............47 49 47 51 51 51 51 51 53 53 56 56
20 FT WIND DIR..W W SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..10 9 8 8 8 8 8 9 9 9 9 9
20 FT WIND GUST.20 17 16 15 15 15 16 17 17 17 17 16
MIX HGT (KFT)...1.3 0.9 0.8 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.24 24 23 22 21 21 21 20 20 18 18 17
SDSPL KT-FT/100027 18 17 17 16 16 16 15 16 15 15 14
THURSDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT).
CWR.................2 PERCENT.
MAX TEMPERATURE.....AROUND 31.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........WEST WINDS 7 TO 9 MPH.
MIXING HEIGHT.......3700 FT AGL.
TRANSPORT WINDS.....WEST 12 TO 21 MPH DECREASING TO AROUND 8 MPH
LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (9300 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (67500 KNOT-FT) IN THE
AFTERNOON.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........58 60 63 64 64 64 64 66 67 68 68 72
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............15 15 17 21 25 29 31 31 30 27 24 25
RH..............56 56 51 45 38 32 30 30 32 37 43 42
20 FT WIND DIR..SW SW SW W W W W W W W W W
20 FT WIND SPD..8 7 7 7 7 8 8 9 9 8 7 7
20 FT WIND GUST.15 14 13 13 14 15 16 17 17 16 15 17
MIX HGT (KFT)...0.8 0.8 1.0 1.6 2.5 3.2 3.6 3.7 3.5 2.9 2.1 1.3
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.16 14 14 15 17 20 21 21 20 16 12 8
SDSPL KT-FT/100012 9 11 21 38 55 65 68 60 41 21 9
FORECASTER...ZAWISLAK
REQUESTED BY...COYDE FICKEL
TYPE OF REQUEST...PRESCRIBED
.TAG 2600360.0/CYS
.DELDT 01/19/26
.FORMATTERVERSION 2.0.0
.EMAIL COYDE.FICKEL@USDA.GOV
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