758
FNUS75 KCYS 021218
FWSCYS
SPOT FORECAST FOR ACORN MACHINE PILE RX...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
518 AM MST MON FEB 2 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
COOL DAY TODAY WITH WINDS INCREASING THROUGH THE MORNING HOURS. A COLD
FRONT IS EXPECTED TO PUSH THROUGH LATER THIS MORNING INTO THE AFTERNOON
HOURS. PRECIPITATION IS NOT EXPECTED WITH THE INITIAL COLD FRONTAL PASSAGE.
WESTERLY TO WEST-NORTHWESTERLY WINDS THIS MORNING UNTIL 11AM, THEN WINDS
BECOME WESTERLY AT 13 TO 18 MPH, GUSTING UP TP 25 TO 30 MPH. WINDS START
TO DECREASE AROUND 5PM THIS EVENING, BECOMING WEST TO WEST-NORTHWESTERLY
AROUND 10 MPH. MINIMUM RELATIVE HUMIDITY THIS AFTERNOON WILL DROP TO
AROUND 35-40%, RECOVERING TO 70+% OVERNIGHT. INCREASING PRECIPITATION
CHANCES EXPECTED TUESDAY MORNING INTO THE EARLY EVENING HOURS, FROM ABOUT
11AM THROUGH 5PM. AS A RESULT AFTERNOON RELATIVE HUMIDITY VALUES WILL BE
HIGHER, BETWEEN 45-50%, WITH OVERNIGHT RECOVERIES 85+%.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
CWR.................1 PERCENT.
MAX TEMPERATURE.....AROUND 35.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........WEST WINDS 10 TO 14 MPH.
MIXING HEIGHT.......3300 FT AGL. BUT INCREASING PRECIPITATION CHANCES EXPECTED BEHIND THE FRONT DURING
THE MORNING HOURS ON TUESDAY INTO THE EARLY EVENING HOURS (11AM TO 5PM)
MINIMUM RELATIVE HUMIDITY THIS AFTERNOON WILL DROP TO
AROUND 35 TO 40%, RECOVERING TO 70+% THIS OVERNIGHT. A COLD FRONT IS
EXPECTED TO PUSH THROUGH LATER THIS MORNING INTO THE AFTERNOON HOURS.
PRECIPITATION IS NOT EXPECTED WITH THE INITIAL COLD FRONTAL PASSAGE,
BUT INCREASING PRECIPITATION CHANCES EXPECTED BEHIND THE FRONT DURING
THE MORNING HOURS ON TUESDAY INTO THE EARLY EVENING HOURS (11 AM TO
5 PM)
TRANSPORT WINDS.....WEST 16 TO 23 MPH.
SMOKE DISPERSAL.....POOR (6700 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (66800 KNOT-FT) IN THE
AFTERNOON.
TIME (MST) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........54 57 47 41 18 5 6 7 8
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0
TEMP............29 30 33 34 34 35 33 32 30
RH..............48 46 41 38 38 36 38 37 41
20 FT WIND DIR..W W W W W W W W W
20 FT WIND SPD..10 12 13 13 14 13 13 12 12
20 FT WIND GUST.18 22 24 24 25 23 24 22 21
MIX HGT (KFT)...0.6 1.5 2.1 2.5 3.1 3.3 3.2 3.0 0.5
TRANSP WIND DIR.W W W W W W W W W
TRANSP WIND SPD.16 20 20 21 21 23 23 22 16
SDSPL KT-FT/10008 25 35 46 55 67 64 58 7
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT).
CWR.................3 PERCENT.
MIN TEMPERATURE.....AROUND 18.
MAX HUMIDITY........71 PERCENT.
WIND (20 FT)........WEST WINDS 8 TO 10 MPH.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WINDS.....WEST 14 TO 20 MPH.
SMOKE DISPERSAL.....POOR (2600 KNOT-FT).
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........6 7 8 12 20 22 39 43 43 44 46 54
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............27 25 23 23 23 23 23 23 20 20 20 19
RH..............44 46 50 47 45 45 47 50 59 59 62 64
20 FT WIND DIR..W W W W W W W SW SW SW W W
20 FT WIND SPD..10 9 9 8 8 9 9 9 8 9 9 9
20 FT WIND GUST.18 17 17 15 15 17 17 16 16 17 18 17
MIX HGT (KFT)...0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.14 14 15 15 16 16 15 16 17 18 18 20
SDSPL KT-FT/10003 3 3 3 3 3 3 3 3 4 4 4
TUESDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). SLIGHT CHANCE OF
SNOW SHOWERS LATE IN THE MORNING.
CWR.................5 PERCENT.
MAX TEMPERATURE.....AROUND 32.
MIN HUMIDITY........49 PERCENT.
WIND (20 FT)........WEST WINDS 10 TO 13 MPH.
MIXING HEIGHT.......3600 FT AGL.
TRANSPORT WINDS.....WEST 20 TO 28 MPH.
SMOKE DISPERSAL.....POOR (6200 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (64900 KNOT-FT) IN THE
AFTERNOON.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........58 50 46 53 50 41 37 36 36 38 41 44
WEATHER COV..... SCH SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... SW SW SW SW SW SW SW
TSTM COV........
CWR.............0 0 0 0 0 10 10 10 10 10 10 10
TEMP............21 20 20 24 26 29 30 31 32 31 31 30
RH..............62 67 71 62 57 53 51 51 49 51 51 53
20 FT WIND DIR..W W W W W W W W W W NW NW
20 FT WIND SPD..10 10 12 12 12 13 13 13 13 13 12 12
20 FT WIND GUST.20 20 22 22 22 24 24 24 24 24 22 21
MIX HGT (KFT)...0.3 0.4 0.7 1.1 1.5 2.0 2.7 3.3 3.6 3.0 2.0 1.1
TRANSP WIND DIR.W W W W W W W W W NW NW NW
TRANSP WIND SPD.24 24 24 28 25 22 21 BUT INCREASING PRECIPITATION CHANCES EXPECTED BEHIND THE FRONT DURING
THE MORNING HOURS ON TUESDAY INTO THE EARLY EVENING HOURS (11AM TO 5PM)
MINIMUM RELATIVE HUMIDITY THIS AFTERNOON WILL DROP TO
AROUND 35 TO 40%, RECOVERING TO 70+% THIS OVERNIGHT. A COLD FRONT IS
EXPECTED TO PUSH THROUGH LATER THIS MORNING INTO THE AFTERNOON HOURS.
PRECIPITATION IS NOT EXPECTED WITH THE INITIAL COLD FRONTAL PASSAGE,
BUT INCREASING PRECIPITATION CHANCES EXPECTED BEHIND THE FRONT DURING
THE MORNING HOURS ON TUESDAY INTO THE EARLY EVENING HOURS (11 AM TO
5 PM) 21 21 21 21 20
SDSPL KT-FT/10006 8 14 27 34 37 48 60 65 54 36 18
FORECASTER...MOSE
REQUESTED BY...RONALD ZUCHOWSKI
TYPE OF REQUEST...PRESCRIBED
.TAG 2601468.0/CYS
.DELDT 02/02/26
.FORMATTERVERSION 2.0.0
.EMAIL RONALD.ZUCHOWSKI@USDA.GOV
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