246
FNUS75 KTFX 192101
FWSTFX
SPOT FORECAST FOR RED ROCKS LOGGING DECKS...USFS
NATIONAL WEATHER SERVICE GREAT FALLS MT
201 PM MST FRI DEC 19 2025
FORECAST IS BASED ON IGNITION TIME OF 0800 MST ON DECEMBER 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A PERSISTENT WEST TO SOUTHWEST FLOW ALOFT WILL MAINTAIN THE
OPPORTUNITY FOR SNOW EARLY NEXT WEEK ALONG THE CONTINENTAL DIVIDE.
MONDAY IS MOST FAVORED FOR SNOW, WITH LOWER-END PROBABILITY FOR
SNOW LINGERING INTO TUESDAY. LINGERING STRONGER MID LEVEL FLOW
WILL RESULT IN BREEZY WINDS EARLY ON MONDAY, WITH THERE BEING A
60% PROBABILITY FOR A GUST IN EXCESS OF 30 MPH.
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). SNOW LIKELY
EARLY IN THE MORNING, THEN CHANCE OF SNOW LATE
IN THE MORNING.
CWR.................30 PERCENT DECREASING TO 5 PERCENT LATE IN THE
MORNING.
MAX TEMPERATURE.....28-33.
MIN HUMIDITY........66-71 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......4500 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 20 MPH SHIFTING TO THE SOUTHWEST 10
TO 15 MPH LATE IN THE AFTERNOON.
TIME (MST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........82 82 82 62 62 62 62 62 62 68
WEATHER COV.....LKY LKY LKY CHC CHC CHC CHC CHC CHC SCH
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN
TSTM COV........
CWR.............30 30 30 10 10 10 10 10 10 M
TEMP............27 27 27 28 29 30 30 29 28 26
RH..............90 87 82 78 74 71 70 72 76 80
20 FT WIND DIR..W W W W W W W W W SW
20 FT WIND SPD..10 10 10 10 10 10 10 10 10 5
20 FT WIND GUST.15 15 15 15 15 15 15 15 15 15
MIX HGT (KFT)...2.5 3.5 4.0 4.5 4.0 3.0 2.5 1.5 1.0 0.5
TRANSP WIND DIR.W W W W W W W SW SW SW
TRANSP WIND SPD.15 15 20 20 20 25 25 20 15 10
MONDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
SNOW.
CWR.................10.
MIN TEMPERATURE.....20-25.
MAX HUMIDITY........82-87 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......0 FT AGL.
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........68 68 73 73 73 70 70 70 81 81 81 84
WEATHER COV.....SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN SN SN
TSTM COV........
CWR.............M M M M M M M M M M M M
TEMP............25 24 23 23 24 24 24 24 24 24 25 25
RH..............83 85 86 86 84 83 82 81 81 81 82 83
20 FT WIND DIR..SW SW SW SW SW S S S S S S S
20 FT WIND SPD..5 5 10 10 10 10 10 10 10 10 10 10
20 FT WIND GUST.15 15 15 15 15 15 15 15 15 15 15 15
MIX HGT (KFT)...0.5 0.1 0.1 0.1 0.1 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.SW S S S S S S S S S S S
TRANSP WIND SPD.10 10 15 15 15 15 15 15 15 15 15 15
TUESDAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SLIGHT CHANCE OF
SNOW IN THE MORNING.
CWR.................5.
MAX TEMPERATURE.....32-37.
MIN HUMIDITY........71-76 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......4500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........84 84 84 84 84 86 86 86 84 84 84 75
WEATHER COV.....SCH SCH SCH SCH SCH
WEATHER TYPE....SN SN SN SN SN
TSTM COV........
CWR.............M M M M M M M M M M M M
TEMP............25 25 25 26 28 30 32 33 34 33 32 30
RH..............85 86 87 86 84 83 82 82 83 85 87 89
20 FT WIND DIR..S S SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..10 10 5 5 5 5 5 5 5 5 5 5
20 FT WIND GUST.15 15 10 10 10 10 10 10 15 15 15 15
MIX HGT (KFT)...0.5 1.0 1.0 1.0 1.0 1.5 2.5 3.5 4.5 3.5 2.0 0.5
TRANSP WIND DIR.S SW SW SW SW SW SW SW SW SW S S
TRANSP WIND SPD.10 10 10 10 15 15 15 15 15 15 15 10
FORECASTER...MCDOWELL
REQUESTED BY...KRISTIAN SPURGEON
TYPE OF REQUEST...PRESCRIBED
.TAG 2527967.0/TFX
.DELDT 12/19/25
.FORMATTERVERSION 2.0.0
.EMAIL MITCHELL.ROBBINS@USDA.GOV
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