359
FNUS75 KCYS 202340
FWSCYS
SPOT FORECAST FOR SANDSTONE NORTH GNA...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
440 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 35% FOR THIS FORECAST PERIOD WITH GOOD
OVERNIGHT RECOVERY AND WINDS LESS THAN 10 MPH.
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY (40-55 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 32.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........SOUTH TO SOUTHWEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST TO WEST 10 TO 20 MPH, DECREASING
TO AROUND 12 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (3800 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (60300 KNOT-FT) IN THE
AFTERNOON.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........12 12 6 6 6 15 15 15 36 36 36 51
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............11 12 12 17 23 28 29 30 30 32 29 25
RH..............76 70 73 64 50 42 42 41 41 36 40 46
20 FT WIND DIR..SE SE S S S SW SW SW SW SW SW SW
20 FT WIND SPD..5 5 6 6 7 7 8 9 10 8 7 6
20 FT WIND GUST.9 9 10 12 13 14 16 17 18 16 13 10
MIX HGT (KFT)...0.4 0.4 0.5 0.7 1.4 2.2 2.7 3.0 2.9 2.3 1.4 0.8
TRANSP WIND DIR.SW SW S SW SW W W W W W W W
TRANSP WIND SPD.12 10 10 12 14 17 21 23 23 20 15 12
SDSPL KT-FT/10005 4 4 7 17 33 49 60 59 39 18 8
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-55 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 15.
MAX HUMIDITY........64 PERCENT.
WIND (20 FT)........SOUTHWEST TO SOUTH WINDS AROUND 5 MPH.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 12 MPH.
SMOKE DISPERSAL.....POOR (4000 KNOT-FT).
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........51 54 58 52 51 54 54 51 46 46 48 49
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............24 22 20 20 19 18 18 17 17 17 17 16
RH..............48 49 51 51 56 56 56 58 58 58 58 61
20 FT WIND DIR..SW SW SW S S S S S S S S S
20 FT WIND SPD..5 5 5 5 3 3 3 3 3 5 5 5
20 FT WIND GUST.9 9 9 8 8 7 7 7 8 8 8 8
MIX HGT (KFT)...0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5
TRANSP WIND DIR.W W W W W SW SW SW SW SW W W
TRANSP WIND SPD.10 10 10 10 10 12 12 10 10 10 10 10
SDSPL KT-FT/10005 4 4 4 4 5 5 4 4 4 4 4
THURSDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT).
CWR.................1 PERCENT.
MAX TEMPERATURE.....AROUND 32.
MIN HUMIDITY........34 PERCENT.
WIND (20 FT)........SOUTH TO SOUTHWEST WINDS 3 TO 6 MPH.
MIXING HEIGHT.......3100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 5 TO 14 MPH.
SMOKE DISPERSAL.....POOR (1900 KNOT-FT).
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........48 47 48 50 53 57 59 61 65 67 69 75
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............15 15 16 20 24 29 31 32 32 31 29 27
RH..............64 64 61 54 48 39 36 34 34 37 42 44
20 FT WIND DIR..S S S S SW SW SW W W W W W
20 FT WIND SPD..5 3 3 3 3 5 5 6 6 6 5 3
20 FT WIND GUST.8 8 7 7 8 8 9 10 12 10 9 9
MIX HGT (KFT)...0.3 0.3 0.4 0.9 1.7 2.3 2.8 3.1 3.0 2.4 1.4 0.6
TRANSP WIND DIR.SW SW SW SW SW W W W W W W W
TRANSP WIND SPD.9 8 8 9 12 13 14 14 13 10 7 5
SDSPL KT-FT/10003 2 3 8 17 25 34 37 34 21 8 2
FORECASTER...ZAWISLAK
REQUESTED BY...COYDE FICKEL
TYPE OF REQUEST...PRESCRIBED
.TAG 2600297.0/CYS
.DELDT 01/20/26
.FORMATTERVERSION 2.0.0
.EMAIL COYDE.FICKEL@USDA.GOV
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