504
FNUS75 KCYS 031014
FWSCYS
SPOT FORECAST FOR WHITE ROCKS HAND PILE RX...USFS MBRTB
NATIONAL WEATHER SERVICE CHEYENNE WY
314 AM MST WED DEC 3 2025
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
LIGHT SNOW SHOWERS ARE EXPECTED THROUGHOUT THE DAY WITH SNOW ACCUMULATIONS
UP TO AN INCH POSSIBLE. A SECONDARY COLD FRONT MOVING ACROSS THE AREA TODAY
WILL LEAD TO HIGH TEMPERATURES IN THE LOW 20S WITH LIGHT NORTHEAST WINDS.
MINIMUM RELATIVE HUMIDITY WILL BE AROUND 65 PERCENT. HEADING INTO THE OVERNIGHT
HOURS, LOW TEMPERATURES WILL BE IN THE SINGLE DIGITS. WINDS WILL BE CALM
MOST OF THE NIGHT, BUT WILL BEGIN TO PICK UP EARLY IN THE MORNING. STRONG
WINDS ARE EXPECTED THURSDAY WITH SUSTAINED WESTERLIES AT 25 MPH AND GUSTS TO
40 MPH. HIGH TEMPERATURES WILL BE IN THE MID 20S WITH A MINIMUM RELATIVE
HUMIDITY AROUND 50 PERCENT. A STRAY SNOW SHOWER COULD BE POSSIBLE IN THE
AFTERNOON.
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
MOSTLY SUNNY (35-45 PERCENT). CHANCE OF SNOW IN
THE MORNING AND EARLY AFTERNOON, THEN SLIGHT
CHANCE OF SNOW LATE IN THE AFTERNOON.
CWR.................14 PERCENT DECREASING TO 1 PERCENT LATE IN THE
AFTERNOON.
MAX TEMPERATURE.....AROUND 22.
MIN HUMIDITY........65 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 6 MPH IN THE MORNING
BECOMING LIGHT.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....EAST 7 TO 13 MPH SHIFTING TO THE NORTH 6 TO 7
MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (4900 KNOT-FT).
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........91 91 85 81 81 77 75 75 70 58 49 33
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC CHC SCH SCH SCH
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
TEMP............15 15 15 18 20 20 21 22 20 19 16 11
RH..............92 92 88 77 71 71 71 65 71 74 84 96
20 FT WIND DIR..NE NE NE NE NE NE NE N N NW NW W
20 FT WIND SPD..5 6 6 5 5 5 5 3 2 2 2 2
20 FT WIND GUST.9 9 9 9 9 9 8 7 6 5 5 5
MIX HGT (KFT)...0.6 0.6 1.0 1.4 1.9 2.3 2.5 2.3 2.2 1.6 0.8 1.0
TRANSP WIND DIR.E E E E E E NE NE NE NE N N
TRANSP WIND SPD.12 12 12 13 12 9 8 9 9 7 7 6
SDSPL KT-FT/10006 6 10 15 20 19 18 19 17 9 5 5
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
CWR.................1 PERCENT.
MIN TEMPERATURE.....AROUND 4 ABOVE.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 14 MPH IN
THE LATE EVENING AND OVERNIGHT.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 6 MPH SHIFTING TO THE SOUTHWEST 6
TO 15 MPH IN THE EVENING AND OVERNIGHT, THEN
INCREASING TO 18 TO 23 MPH AFTER 3 AM.
SMOKE DISPERSAL.....POOR (1500 KNOT-FT).
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........30 21 11 9 9 9 10 11 10 12 11 8
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............8 6 5 5 4 4 5 5 5 6 6 7
RH..............100 100 95 91 91 83 79 79 79 79 87 87
20 FT WIND DIR..W W W W SW SW SW SW SW SW SW SW
20 FT WIND SPD..2 2 3 3 5 7 7 8 9 12 12 14
20 FT WIND GUST.5 6 7 8 9 12 14 16 18 21 23 25
MIX HGT (KFT)...0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4
TRANSP WIND DIR.N W SW SW SW SW W SW SW SW SW SW
TRANSP WIND SPD.6 6 6 7 8 9 10 13 15 18 22 23
SDSPL KT-FT/10002 2 2 2 2 2 2 3 4 5 6 7
THURSDAY
SKY/WEATHER.........SUNNY (20-30 PERCENT). CHANCE OF SNOW LATE IN
THE AFTERNOON.
CWR.................6 PERCENT.
MAX TEMPERATURE.....AROUND 24.
MIN HUMIDITY........52 PERCENT.
WIND (20 FT)........WEST WINDS 16 TO 21 MPH. GUSTS UP TO 38 MPH
INCREASING TO 39 MPH LATE IN THE MORNING.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 29 TO 38 MPH SHIFTING TO THE WEST 36
TO 44 MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR (9900 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (93500 KNOT-FT) IN THE
AFTERNOON.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........11 13 9 10 14 20 27 33 37 39 40 41
WEATHER COV..... CHC
WEATHER TYPE.... SN
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 10
TEMP............7 8 13 18 20 22 23 24 23 21 17 15
RH..............87 83 70 59 56 52 52 52 54 59 70 77
20 FT WIND DIR..SW SW SW W W W W W W W W W
20 FT WIND SPD..16 16 18 20 21 21 21 21 21 21 21 21
20 FT WIND GUST.29 31 33 36 38 39 39 39 39 39 38 38
MIX HGT (KFT)...0.4 0.7 1.0 1.5 1.9 2.3 2.4 2.5 2.3 1.9 1.3 0.9
TRANSP WIND DIR.SW SW W W W W W W W W W W
TRANSP WIND SPD.29 32 33 38 41 43 44 44 43 40 38 36
SDSPL KT-FT/100010 19 30 49 70 84 93 94 85 66 44 27
FORECASTER...FULLER
REQUESTED BY...PARKER JOHNSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2526912.0/CYS
.DELDT 12/03/25
.FORMATTERVERSION 2.0.0
.EMAIL PARKER.JOHNSON@USDA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page