290
FNUS75 KBYZ 131156
FWSBYZ
SPOT FORECAST FOR HORN CREEK 2 PILE BURN...NORTHERN CHEYENNE AGENCY
NATIONAL WEATHER SERVICE BILLINGS MT
456 AM MST SAT DEC 13 2025
FORECAST IS BASED ON IGNITION TIME OF 0800 MST ON DECEMBER 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
SNOW COMES TO AN END THIS MORNING. HIGH TEMPERATURE TODAY IS
UNCERTAIN AS IT IS NOT CLEAR HOW FAR OFF THE FOOTHILLS WARMER
TEMPERATURES WILL GET. IF DOWNSLOPING WINDS REACH THE AREA, HIGH
TEMPERATURE WILL LIKELY BE IN THE 20S. LOW TEMPERATURE WILL LIKELY
BE EARLY IN THE EVENING TODAY AS TEMPERATURES WARM OVERNIGHT.
MUCH WARMER CONDITIONS EXPECTED SUNDAY. GENERALLY LIGHT WINDS AND
LOW MIXING HEIGHTS EXPECTED. GENERALLY HIGH RELATIVE HUMIDITIES
EXPECTED. TORGERSON
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY. SNOW LIKELY IN THE MORNING.
CWR.................10 PERCENT.
MAX TEMPERATURE.....16-20.
MIN HUMIDITY........72-76 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHWEST WINDS 5 TO 8 MPH BECOMING SOUTH
IN THE AFTERNOON.
RIDGETOP...........NORTHWEST AROUND 15 MPH EARLY IN THE MORNING
DECREASING TO AROUND 10 MPH IN THE AFTERNOON.
MIXING HEIGHT.......INCREASING TO 700 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 5 TO 12 MPH SHIFTING TO THE SOUTH 6
TO 12 MPH IN THE AFTERNOON.
TIME (MST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........94 94 93 86 76 66 60 65 61 50
WEATHER COV.....LKY LKY SCH
WEATHER TYPE....SN SN SN
TSTM COV........
TEMP............4 4 5 8 12 13 15 20 20 20
RH..............86 89 94 91 89 92 90 90 91 87
20 FT WIND DIR..NW NW NW W S S S S S S
20 FT WIND SPD..5 4 4 3 4 5 5 6 6 6
20 FT WIND GUST.12 7 6 6 7 7 8 8 8 8
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
MIN TEMPERATURE.....14-18.
MAX HUMIDITY........72-76 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS 5 TO 10 MPH.
RIDGETOP...........SOUTHWEST AROUND 15 MPH.
MIXING HEIGHT.......DECREASING TO 100 FT AGL OVERNIGHT.
TRANSPORT WINDS.....SOUTH 13 TO 15 MPH.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........50 32 32 39 30 18 17 14 13 13 13 19
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............16 18 19 21 21 22 22 19 24 25 26 30
RH..............86 85 81 78 75 74 71 71 68 60 58 57
20 FT WIND DIR..S S S S S S S S SW SW SW SW
20 FT WIND SPD..5 6 6 6 6 6 6 6 6 6 6 6
20 FT WIND GUST.10 11 11 11 11 11 11 11 11 11 11 11
SUNDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....42-46.
MIN HUMIDITY........55-59 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH BECOMING WEST 5 TO 10 MPH.
RIDGETOP...........WEST 15 TO 20 MPH.
MIXING HEIGHT.......INCREASING TO 100 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 12 TO 15 MPH.
TIME (MST) 6 AM 9 AM NOON 3 PM
SKY (%).........11 11 15 16
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
TEMP............30 33 42 43
RH..............53 59 66 66
20 FT WIND......SW 6G11 SW 6G11 SW 6G10 SW 5G10
FORECASTER...TORGERSON
REQUESTED BY...MARIO PRETTY BOY
TYPE OF REQUEST...PRESCRIBED
.TAG 2527498.2/BYZ
.DELDT 12/13/25
.FORMATTERVERSION 2.0.0
.EMAIL MARIO.PRETTYBOY@BIA.GOV
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