805
FNUS75 KTFX 201205
FWSTFX
SPOT FORECAST FOR SKYTOP RX...USFS
NATIONAL WEATHER SERVICE GREAT FALLS MT
505 AM MST TUE JAN 20 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 MST ON JANUARY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A FAST MOVING WEATHER DISTURBANCE WILL MOVE SOUTH THROUGH THE
REGION THIS MORNING, SHIFTING WINDS TO THE NORTH AND BRINGING A
PERIOD OF LOWER CLOUD-COVER AND A FEW SNOW SHOWERS OR FLURRIES
THROUGH LATE THIS MORNING. A FEW GUSTS TO 15-20 MPH ARE POSSIBLE
LATE THIS MORNING AS THE DISTURBANCE MOVES THROUGH WITH WINDS
DECREASING LATER THIS AFTERNOON AND EVENING. A GENERAL NORTHWEST
FLOW CONTINUES ACROSS THE AREA ON WEDNESDAY WITH TEMPERATURES NEAR
SEASONAL FOR MID JANUARY.
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) WITH A CHANCE OF
SNOW SHOWERS IN THE MORNING.
CWR.................10 PERCENT.
CHANCE OF THUNDER...ZERO.
MAX TEMPERATURE.....28-33.
MIN HUMIDITY........54-59 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHWEST WINDS AROUND 10 MPH SHIFTING TO THE
NORTH IN THE LATE MORNING WITH GUSTS 15-20 MPH.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....NORTH 10 TO 20 MPH.
TIME (MST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........88 91 92 91 87 78 73 60 40 26 12
WEATHER COV.....SCH CHC CHC CHC
WEATHER TYPE....SN SN SN SN
TSTM COV........
CWR.............30 30 30 30 10 10 10 10 10 10 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0
TEMP............25 25 25 25 25 27 29 28 28 28 26
RH..............59 59 66 73 75 70 68 64 62 60 63
20 FT WIND DIR..NW NW N N N N N N N NW W
20 FT WIND SPD..5 5 5 5 5 5 5 5 5 0 5
20 FT WIND GUST.15 15 15 15 15 15 10 10 10 10 10
MIX HGT (KFT)...0.5 0.5 2.0 2.5 2.5 2.5 3.0 3.0 2.5 2.0 0.5
TRANSP WIND DIR.NW N N N N N N N NW W SW
TRANSP WIND SPD.20 15 15 15 15 15 15 10 10 10 5
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....14-19.
MAX HUMIDITY........66-71 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 5-10 MPH IN THE EVENING BECOMING
LIGHT AND VARIABLE.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........22 9 8 10 14 19 19 19 12 17 20 34
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............24 24 24 24 24 24 24 24 24 23 21 20
RH..............64 64 64 60 60 59 55 54 53 55 58 62
20 FT WIND DIR..W W W W W W W W W W W NW
20 FT WIND SPD..5 5 5 5 5 5 5 5 5 5 0 0
20 FT WIND GUST.10 10 15 15 15 15 15 10 10 10 10 5
MIX HGT (KFT)...0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W W W W W W W W W W W NW
TRANSP WIND SPD.10 15 15 20 20 20 20 20 20 15 15 10
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....25-30.
MIN HUMIDITY........48-53 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING NORTH 5-10 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......2000 FT AGL.
TRANSPORT WINDS.....NORTH 5 TO 10 MPH SHIFTING TO THE NORTHWEST
LATE IN THE AFTERNOON.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........34 34 57 57 57 47 47 47 50 50 50 60
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............19 17 18 18 21 22 24 25 26 26 25 24
RH..............65 71 71 72 68 64 60 56 54 54 55 56
20 FT WIND DIR..N N N N N N N N NE NE NE NE
20 FT WIND SPD..0 0 0 0 5 5 5 5 0 0 0 0
20 FT WIND GUST.5 5 5 5 10 10 10 10 10 10 5
MIX HGT (KFT)...0.5 0.5 1.0 1.5 1.5 1.5 2.0 2.0 2.0 1.5 1.0 0.5
TRANSP WIND DIR.N N N N N N N NW NW NW W W
TRANSP WIND SPD.10 10 10 5 5 5 5 5 5 5 5 5
FORECASTER...HOENISCH
REQUESTED BY...MENNING
TYPE OF REQUEST...PRESCRIBED
.TAG 2600343.1/TFX
.DELDT 01/20/26
.FORMATTERVERSION 2.0.0
.EMAIL WILLIAM.MENNING@USDA.GOV
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