534
FWUS45 KTFX 171001
AVGTFX
AVALANCHE WEATHER GUIDANCE
NATIONAL WEATHER SERVICE GREAT FALLS MT
400 AM MDT FRI APR 17 2026
..GLACIER NATIONAL PARK/MARIAS PASS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK BK OV BK SC SC FW FW FW FW FW SC SC SC FW SC
CLOUD COVER (%) 65 65 65 75 60 40 25 20 25 20 15 25 30 25 25 20 25
TEMPERATURE 17 21 25 28 28 24 23 23 22 28 35 39 39 33 31 30 29
MAX/MIN TEMP 29 21 40 28
WIND DIR W W W W NW W W W W SW SW SW SW SW SW SW SW
WIND (MPH) 10 9 11 11 10 10 12 13 13 14 17 17 16 12 12 12 12
WIND GUST (MPH) 31 36 36 35
PRECIP PROB (%) 20 30 40 40 20 5 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.01 0.06 0.01 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.07 0.01 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.14 0.01 0.00 0.00
6 HOUR SNOW 0.2 0.9 0.2 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.1 0.2 0.0 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 2.0 0.2 0.0 0.0
SNOW LEVEL (KFT) 1.8 2.2 2.8 3.4 3.8 3.6 3.5 3.3 3.1 3.6 4.4 5.2 5.6 5.5 5.2 5.1 4.9
SNOW DENSITY (%) 6 6 6 6 7 6 7 7 7 9 12 16 20 20 20 25 25
..BOB MARSHALL/SCAPEGOAT WILDERNESS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK OV BK BK SC SC FW FW FW FW FW SC SC FW FW FW
CLOUD COVER (%) 60 60 90 65 55 45 30 20 20 10 15 25 30 25 15 20 20
TEMPERATURE 18 22 27 28 28 23 21 21 20 26 37 42 42 34 30 29 27
MAX/MIN TEMP 29 19 43 27
WIND DIR W W W NW NW W W W W W W W W W SW SW SW
WIND (MPH) 10 11 12 13 12 9 9 9 10 10 12 12 12 9 9 9 8
WIND GUST (MPH) 29 32 33 31 26 27 27 29 32 33
PRECIP PROB (%) 20 20 70 50 20 5 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.02 0.07 0.02 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.09 0.02 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.14 0.02 0.00 0.00
6 HOUR SNOW 0.3 1.1 0.3 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.4 0.3 0.0 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 2.1 0.4 0.0 0.0
SNOW LEVEL (KFT) 2.1 2.5 3.2 3.4 3.8 3.6 3.3 3.2 2.9 3.6 4.5 5.4 5.8 5.6 5.3 5.2 5.1
SNOW DENSITY (%) 6 6 6 6 6 6 6 6 7 8 11 16 20 20 25 25 25
..NEVADA MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK OV OV BK SC SC FW FW FW FW SC SC SC FW FW FW
CLOUD COVER (%) 65 65 70 80 50 40 35 20 15 10 15 25 35 30 15 15 25
TEMPERATURE 21 24 29 31 31 27 25 24 23 28 38 44 46 38 34 31 30
MAX/MIN TEMP 32 22 46 29
WIND DIR W W W W NW W W W W SW W W W W SW SW SW
WIND (MPH) 10 12 13 13 12 8 8 9 9 10 12 12 12 8 8 8 8
WIND GUST (MPH) 31 31 32 29
PRECIP PROB (%) 30 20 50 60 30 5 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.02 0.08 0.03 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.10 0.03 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.13 0.03 0.00 0.00
6 HOUR SNOW 0.3 1.1 0.4 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.4 0.4 0.0 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 1.8 0.5 0.0 0.0
SNOW LEVEL (KFT) 2.3 2.6 3.2 3.6 3.8 3.7 3.4 3.2 2.7 3.4 4.5 5.4 6.0 5.6 5.3 5.1 4.9
SNOW DENSITY (%) 6 6 7 7 7 7 6 7 7 9 14 25 33 33 33 33 33
..ELKHORN/BOULDER MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK BK OV SC SC SC FW FW FW FW FW SC FW FW FW FW
CLOUD COVER (%) 60 70 70 70 50 35 30 20 10 10 15 25 30 20 10 10 20
TEMPERATURE 18 22 28 30 30 25 22 21 20 27 38 45 46 37 32 30 29
MAX/MIN TEMP 32 20 47 28
WIND DIR W NW NW NW NW NW W W W SW SW W W SW SW SW SW
WIND (MPH) 11 13 14 14 14 9 9 9 9 9 10 12 12 8 9 9 9
WIND GUST (MPH) 29 35 34 33 33 26 26 29 32 34 26 26
PRECIP PROB (%) 30 30 30 50 20 5 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.03 0.07 0.04 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.10 0.04 0.00 0.00
LOW END QPF 0.01 0.00 0.00 0.00
HIGH END QPF 0.14 0.04 0.00 0.00
6 HOUR SNOW 0.5 1.1 0.6 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.6 0.6 0.0 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 2.1 0.7 0.0 0.0
SNOW LEVEL (KFT) 2.3 2.7 3.1 3.5 3.7 3.5 3.4 3.1 2.7 3.5 4.6 5.7 6.2 5.9 5.6 5.3 4.9
SNOW DENSITY (%) 5 5 6 6 6 6 6 6 6 8 11 20 25 25 25 25 25
..BIG BELT MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK OV OV BK SC SC SC FW FW FW FW SC SC FW FW FW
CLOUD COVER (%) 60 65 70 85 60 50 45 35 25 5 10 20 30 35 15 15 25
TEMPERATURE 19 24 29 30 30 25 24 23 23 28 38 45 47 39 34 31 30
MAX/MIN TEMP 32 22 47 30
WIND DIR W W NW NW NW W W SW SW SW SW SW SW SW S S S
WIND (MPH) 9 10 12 11 11 6 6 9 9 11 13 13 13 9 10 10 10
WIND GUST (MPH) 27 32 34 32 32 24 33 33 34 26
PRECIP PROB (%) 30 30 50 70 30 10 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.02 0.09 0.03 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.11 0.03 0.00 0.00
LOW END QPF 0.03 0.00 0.00 0.00
HIGH END QPF 0.15 0.03 0.00 0.00
6 HOUR SNOW 0.3 1.3 0.4 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.6 0.4 0.0 0.0
LOW END SNOW 0.2 0.0 0.0 0.0
HIGH END SNOW 2.0 0.4 0.0 0.0
SNOW LEVEL (KFT) 1.9 2.4 3.0 3.4 3.6 3.5 3.4 3.2 2.9 3.3 4.3 5.3 6.0 5.7 5.4 5.0 4.7
SNOW DENSITY (%) 5 6 7 7 7 7 6 6 7 8 12 20 33 33 33 33 33
..LITTLE BELT MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK SC OV OV BK SC BK SC FW FW CL FW FW FW FW FW FW
CLOUD COVER (%) 55 50 75 80 60 45 60 35 25 5 5 10 20 20 10 10 10
TEMPERATURE 16 22 27 29 28 22 22 22 22 29 39 44 46 36 32 30 29
MAX/MIN TEMP 30 21 46 29
WIND DIR W W NW NW NW W W W W W W W W SW SW SW SW
WIND (MPH) 9 11 14 13 11 6 6 9 9 11 12 13 13 9 9 9 9
WIND GUST (MPH) 28 33 35 33 29 26 31 32 33 33
PRECIP PROB (%) 30 30 50 60 30 20 5 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S S
6 HOUR QPF 0.01 0.05 0.03 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.06 0.03 0.00 0.00
LOW END QPF 0.01 0.00 0.00 0.00
HIGH END QPF 0.11 0.03 0.00 0.00
6 HOUR SNOW 0.2 0.8 0.4 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.0 0.4 0.0 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 1.4 0.5 0.0 0.0
SNOW LEVEL (KFT) 1.2 1.9 2.6 3.1 3.3 3.0 3.1 3.1 2.9 3.5 4.4 5.3 5.8 5.6 5.4 5.3 5.1
SNOW DENSITY (%) 5 6 6 6 6 6 6 6 6 7 11 16 25 25 25 25 25
..HIGHWOOD MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK BK BK BK OV BK SC FW CL CL FW FW FW FW FW FW
CLOUD COVER (%) 50 50 50 55 60 75 55 30 10 5 5 5 15 20 10 5 5
TEMPERATURE 14 20 27 32 32 28 27 26 27 33 41 47 49 41 37 34 34
MAX/MIN TEMP 34 26 49 33
WIND DIR W W NW NW NW W W W W W W W W SW SW SW SW
WIND (MPH) 11 12 16 14 13 10 10 11 13 14 17 17 16 11 11 11 11
WIND GUST (MPH)
PRECIP PROB (%) 20 20 20 30 30 20 5 5 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S S
6 HOUR QPF 0.00 0.01 0.02 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.01 0.02 0.00 0.00
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.04 0.02 0.00 0.00
6 HOUR SNOW 0.0 0.1 0.3 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 0.1 0.3 0.0 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 0.3 0.3 0.0 0.0
SNOW LEVEL (KFT) 0.4 1.4 2.4 2.9 3.2 3.2 3.1 3.1 2.8 3.4 4.2 5.1 5.7 5.6 5.5 5.4 5.3
SNOW DENSITY (%) 6 6 6 8 8 7 7 7 8 10 14 25 33 33 33 33 33
..SNOWY/JUDITH MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK SC SC SC SC SC SC SC SC FW CL FW FW FW FW FW FW
CLOUD COVER (%) 55 40 50 50 45 35 45 45 35 10 5 10 10 20 20 10 15
TEMPERATURE 17 22 31 34 33 27 25 24 25 34 43 48 49 39 36 33 31
MAX/MIN TEMP 35 23 50 31
WIND DIR NW NW NW NW NW NW W W W W W W W SW SW SW SW
WIND (MPH) 13 16 18 17 16 9 8 8 10 11 13 13 12 8 8 9 9
WIND GUST (MPH) 36 39 39 37 36 26 31 33 33 33
PRECIP PROB (%) 10 10 10 10 20 10 5 5 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.00 0.01 0.01 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.01 0.01 0.00 0.00
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.03 0.01 0.00 0.00
6 HOUR SNOW 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 0.1 0.1 0.0 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 0.3 0.1 0.0 0.0
SNOW LEVEL (KFT) 0.4 0.8 2.0 2.6 2.9 2.8 2.7 2.7 2.8 3.4 4.2 5.0 5.6 5.5 5.4 5.2 5.1
SNOW DENSITY (%) 5 6 7 8 8 7 6 7 7 9 14 25 33 33 33 33 33
..BEARS PAW MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK SC SC SC SC FW SC SC SC FW CL FW FW SC FW FW FW
CLOUD COVER (%) 50 35 35 40 45 20 40 50 30 10 5 10 15 30 20 10 10
TEMPERATURE 11 17 27 33 34 27 25 25 26 35 43 49 50 40 37 33 31
MAX/MIN TEMP 35 23 51 30
WIND DIR NW NW NW NW NW NW NW W W W W W W SW S SW SW
WIND (MPH) 10 10 13 14 14 8 5 5 5 9 12 13 11 5 6 5 5
WIND GUST (MPH)
PRECIP PROB (%) 10 5 10 20 10 0 5 5 0 0 0 0 0 0 0 0 0
PRECIP TYPE S
6 HOUR QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.00 0.00 0.00 0.00
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.00 0.01 0.00 0.00
6 HOUR SNOW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 0.0 0.0 0.0 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 0.0 0.0 0.0 0.0
SNOW LEVEL (KFT) 0.0 0.0 0.8 1.9 2.5 2.3 2.2 2.2 2.4 3.1 3.9 4.6 5.1 5.1 5.1 5.0 5.0
SNOW DENSITY (%) 5 6 6 7 8 7 7 7 7 10 14 20 33 33 33 33 33
..CASTLE/CRAZY MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER OV BK OV OV BK BK BK SC SC FW FW FW SC FW FW FW FW
CLOUD COVER (%) 70 60 75 85 65 50 55 45 30 5 5 15 25 20 15 10 15
TEMPERATURE 18 22 27 30 28 23 22 21 21 27 37 43 45 36 32 30 29
MAX/MIN TEMP 31 20 45 28
WIND DIR W W NW NW NW W W W SW SW W W SW SW SW SW SW
WIND (MPH) 12 16 18 17 14 10 9 10 10 13 18 18 16 11 10 10 11
WIND GUST (MPH) 37 43 43 40 35 26 29 32 39 43 43 40 29 29 31 31
PRECIP PROB (%) 20 30 40 70 30 10 5 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.01 0.08 0.01 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.09 0.01 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.12 0.01 0.00 0.00
6 HOUR SNOW 0.2 1.2 0.2 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.4 0.2 0.0 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 1.8 0.2 0.0 0.0
SNOW LEVEL (KFT) 1.7 2.2 2.8 3.1 3.5 3.2 3.1 3.2 2.9 3.4 4.2 5.3 5.9 5.7 5.5 5.2 4.9
SNOW DENSITY (%) 5 5 6 6 6 6 5 6 6 7 10 16 25 25 25 25 25
..BRIDGER RANGE
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER OV OV OV OV BK SC SC SC FW FW FW FW SC SC FW FW FW
CLOUD COVER (%) 80 75 70 80 60 45 45 30 20 5 10 15 25 30 20 15 25
TEMPERATURE 18 21 26 29 28 23 22 21 20 26 36 43 45 37 32 29 28
MAX/MIN TEMP 30 19 45 28
WIND DIR W W W NW NW W W W SW SW SW SW SW SW S SW S
WIND (MPH) 9 12 13 12 10 5 5 6 6 9 13 12 11 9 9 8 8
WIND GUST (MPH) 26 31 32 29 28 26 32 31 31 26
PRECIP PROB (%) 30 40 40 60 30 5 5 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.03 0.06 0.04 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.09 0.04 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.13 0.05 0.00 0.00
6 HOUR SNOW 0.6 0.9 0.7 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.5 0.7 0.0 0.0
LOW END SNOW 0.2 0.0 0.0 0.0
HIGH END SNOW 1.8 0.8 0.0 0.0
SNOW LEVEL (KFT) 2.0 2.4 3.1 3.4 3.6 3.5 3.4 3.2 2.8 3.3 4.1 5.3 6.1 5.8 5.4 4.9 4.7
SNOW DENSITY (%) 5 5 6 6 6 6 5 6 6 7 10 16 25 25 25 25 25
..MADISON RANGE/SPANISH PEAKS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK BK BK BK SC SC SC FW CL FW FW SC SC FW FW FW
CLOUD COVER (%) 65 60 70 70 65 50 45 30 20 5 15 25 35 25 15 10 15
TEMPERATURE 11 15 20 23 22 17 15 13 11 20 32 36 35 28 25 23 22
MAX/MIN TEMP 24 11 37 22
WIND DIR W W W NW NW NW NW W SW SW SW SW SW S S S S
WIND (MPH) 6 9 10 11 10 5 4 5 8 8 11 12 13 11 11 11 10
WIND GUST (MPH) 26 29 29 29 32 33 34 31 29 28 27
PRECIP PROB (%) 30 30 40 50 30 10 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.04 0.08 0.03 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.12 0.03 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.15 0.03 0.00 0.00
6 HOUR SNOW 0.8 1.3 0.5 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 2.1 0.5 0.0 0.0
LOW END SNOW 0.2 0.0 0.0 0.0
HIGH END SNOW 2.6 0.6 0.0 0.0
SNOW LEVEL (KFT) 1.8 2.3 3.0 3.4 3.7 3.5 3.2 2.9 2.5 3.4 4.6 5.6 6.0 5.5 5.1 5.1 4.9
SNOW DENSITY (%) 5 5 5 6 5 5 5 5 5 6 8 10 12 12 12 12 14
..GALLATIN RANGE/HYALITE MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER OV OV OV OV BK BK BK SC SC FW FW FW SC SC FW FW FW
CLOUD COVER (%) 80 80 75 75 70 60 65 50 30 5 10 20 35 30 20 20 20
TEMPERATURE 13 16 22 24 24 19 16 14 13 21 35 40 39 30 26 24 23
MAX/MIN TEMP 25 13 41 23
WIND DIR W W NW NW NW NW W W SW SW SW SW SW S S S S
WIND (MPH) 8 9 11 11 11 6 5 6 8 8 10 11 11 11 12 11 10
WIND GUST (MPH) 28 29 28
PRECIP PROB (%) 50 50 50 50 30 10 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S S
6 HOUR QPF 0.06 0.10 0.08 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.16 0.08 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.20 0.09 0.00 0.00
6 HOUR SNOW 1.0 1.7 1.3 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 2.7 1.3 0.0 0.0
LOW END SNOW 0.3 0.0 0.0 0.0
HIGH END SNOW 3.3 1.6 0.0 0.0
SNOW LEVEL (KFT) 1.9 2.5 3.1 3.5 3.7 3.6 3.3 2.9 2.5 3.4 4.7 5.7 6.2 5.6 5.2 5.1 4.9
SNOW DENSITY (%) 5 5 5 5 5 5 5 5 5 6 8 11 14 14 14 14 16
..LIONHEAD RANGE
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER SC BK OV OV BK SC FW FW FW FW FW FW SC FW FW FW FW
CLOUD COVER (%) 50 50 70 80 70 45 25 25 25 10 15 25 35 25 15 10 10
TEMPERATURE 10 16 24 27 26 20 16 12 11 19 33 38 38 29 24 21 19
MAX/MIN TEMP 28 11 39 19
WIND DIR SW SW W W W W SW SW SW SW SW SW SW S S S SE
WIND (MPH) 4 6 9 10 10 5 3 3 3 5 10 11 10 6 5 5 5
WIND GUST (MPH)
PRECIP PROB (%) 30 30 50 60 30 5 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.01 0.04 0.01 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.05 0.01 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.08 0.01 0.00 0.00
6 HOUR SNOW 0.2 0.7 0.2 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 0.9 0.2 0.0 0.0
LOW END SNOW 0.2 0.0 0.0 0.0
HIGH END SNOW 1.3 0.2 0.0 0.0
SNOW LEVEL (KFT) 1.5 2.0 3.1 3.7 3.9 3.6 3.2 2.9 2.6 3.5 4.5 5.5 5.9 5.4 5.0 4.9 4.8
SNOW DENSITY (%) 5 5 5 6 6 5 5 5 6 6 7 12 16 16 14 14 16
..TOBACCO ROOT MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK BK OV BK SC SC FW FW FW FW SC SC FW FW FW FW
CLOUD COVER (%) 60 60 65 70 55 40 25 15 15 10 20 25 25 25 15 15 15
TEMPERATURE 14 19 24 27 27 21 19 17 16 24 34 40 41 32 29 28 27
MAX/MIN TEMP 29 16 42 27
WIND DIR W W NW NW NW NW NW W W SW SW SW SW S SW SW SW
WIND (MPH) 9 11 12 12 12 8 8 9 10 10 13 14 16 13 12 11 10
WIND GUST (MPH) 28 27
PRECIP PROB (%) 20 20 30 50 30 5 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.02 0.07 0.02 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.09 0.02 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.16 0.02 0.00 0.00
6 HOUR SNOW 0.3 1.2 0.3 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.5 0.3 0.0 0.0
LOW END SNOW 0.3 0.0 0.0 0.0
HIGH END SNOW 2.4 0.3 0.0 0.0
SNOW LEVEL (KFT) 2.1 2.5 3.1 3.5 3.8 3.5 3.3 2.9 2.6 3.6 4.5 5.6 6.2 5.7 5.4 5.1 4.8
SNOW DENSITY (%) 5 5 5 6 6 5 5 5 6 7 9 12 16 20 16 16 20
..SNOWCREST/GRAVELLY/RUBY/BLACKTAIL RANGES
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK SC BK BK BK SC FW FW FW FW FW SC SC SC FW FW FW
CLOUD COVER (%) 55 50 65 60 55 35 20 10 10 10 25 35 35 30 20 10 10
TEMPERATURE 14 18 24 26 26 20 18 16 16 23 36 40 39 31 29 27 25
MAX/MIN TEMP 27 16 40 25
WIND DIR W NW NW NW NW NW NW W SW S S SW S S S S S
WIND (MPH) 9 11 13 14 13 8 5 5 5 8 12 16 16 13 11 10 10
WIND GUST (MPH) 28
PRECIP PROB (%) 20 20 30 40 20 5 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.00 0.03 0.01 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.03 0.01 0.00 0.00
LOW END QPF 0.01 0.00 0.00 0.00
HIGH END QPF 0.07 0.01 0.00 0.00
6 HOUR SNOW 0.1 0.4 0.1 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 0.5 0.1 0.0 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 1.0 0.1 0.0 0.0
SNOW LEVEL (KFT) 2.1 2.4 3.0 3.4 3.7 3.5 3.2 2.9 2.7 3.6 4.5 5.5 6.0 5.6 5.3 5.2 4.9
SNOW DENSITY (%) 5 5 5 6 6 5 5 5 6 7 9 14 16 20 16 16 20
..CENTENNIAL MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER SC SC BK BK BK SC FW FW FW FW FW SC SC SC FW FW FW
CLOUD COVER (%) 40 45 65 65 60 25 10 15 10 5 20 30 35 30 15 10 10
TEMPERATURE 12 16 23 26 26 20 17 15 14 21 31 35 36 30 26 25 23
MAX/MIN TEMP 27 14 36 23
WIND DIR NW NW NW W NW NW NW NW W S S SW SW S S SE SE
WIND (MPH) 12 13 14 14 14 11 9 8 5 8 14 16 14 11 9 8 8
WIND GUST (MPH)
PRECIP PROB (%) 20 20 40 50 20 5 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.01 0.03 0.01 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.04 0.01 0.00 0.00
LOW END QPF 0.01 0.00 0.00 0.00
HIGH END QPF 0.08 0.01 0.00 0.00
6 HOUR SNOW 0.2 0.4 0.2 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 0.6 0.2 0.0 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 1.2 0.2 0.0 0.0
SNOW LEVEL (KFT) 1.8 2.3 3.0 3.5 3.8 3.6 3.2 2.9 2.6 3.6 4.5 5.4 5.8 5.4 5.2 5.1 4.9
SNOW DENSITY (%) 5 5 5 6 6 5 5 5 6 7 8 11 14 16 14 16 16
..ANACONDA/HIGHLAND RANGES
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK BK BK SC FW FW FW FW SC SC SC SC FW FW FW FW
CLOUD COVER (%) 65 65 70 60 40 25 20 15 25 25 35 40 35 25 20 20 25
TEMPERATURE 17 20 26 29 29 23 20 18 17 23 36 43 45 35 30 28 26
MAX/MIN TEMP 30 17 45 26
WIND DIR NW W NW NW NW NW NW W SW S SW SW SW SW SW S S
WIND (MPH) 6 9 11 12 12 6 4 4 4 5 9 10 10 6 5 6 5
WIND GUST (MPH) 29 26 28 29
PRECIP PROB (%) 20 20 30 30 10 0 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.02 0.03 0.00 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.05 0.00 0.00 0.00
LOW END QPF 0.01 0.00 0.00 0.00
HIGH END QPF 0.10 0.00 0.00 0.00
6 HOUR SNOW 0.4 0.6 0.0 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.0 0.0 0.0 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 1.4 0.0 0.0 0.0
SNOW LEVEL (KFT) 2.3 2.6 3.1 3.5 3.7 3.5 3.2 3.0 2.8 3.6 4.6 5.7 6.4 6.1 5.7 5.3 4.9
SNOW DENSITY (%) 5 5 5 6 6 6 6 6 6 7 11 16 25 25 20 20 25
..PIONEER MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK BK BK SC FW FW FW FW SC SC SC SC FW FW FW FW
CLOUD COVER (%) 65 65 65 55 40 20 20 15 15 25 35 40 35 25 20 20 25
TEMPERATURE 15 18 24 27 28 21 18 17 16 23 36 42 43 34 29 27 26
MAX/MIN TEMP 29 16 44 26
WIND DIR W W NW NW NW NW W W W SW SW SW SW SW SW SW SW
WIND (MPH) 9 11 13 14 14 8 5 5 5 5 9 10 11 6 6 6 6
WIND GUST (MPH) 29 33 33 34 35 26 26 28 29
PRECIP PROB (%) 20 20 30 30 10 5 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.01 0.02 0.00 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.03 0.00 0.00 0.00
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.08 0.00 0.00 0.00
6 HOUR SNOW 0.2 0.4 0.0 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 0.6 0.0 0.0 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 1.2 0.0 0.0 0.0
SNOW LEVEL (KFT) 2.3 2.5 3.0 3.4 3.6 3.4 3.1 3.0 2.8 3.6 4.6 5.7 6.3 6.0 5.7 5.4 5.0
SNOW DENSITY (%) 5 5 5 6 6 5 5 6 6 7 10 16 25 20 16 20 20
..BEAVERHEAD/TENDOY MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK SC BK SC SC FW FW FW FW SC SC SC SC SC FW FW FW
CLOUD COVER (%) 55 50 60 50 45 20 15 15 20 30 35 40 30 30 25 20 20
TEMPERATURE 14 18 24 28 28 21 18 17 17 24 36 41 42 33 29 27 26
MAX/MIN TEMP 29 17 42 26
WIND DIR W NW NW NW NW NW W W SW SW SW SW SW S S S S
WIND (MPH) 11 13 14 14 14 9 6 5 5 6 11 13 13 11 10 9 9
WIND GUST (MPH) 33 32 33 32 32 32 32 29 27
PRECIP PROB (%) 20 10 20 20 10 0 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S
6 HOUR QPF 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.01 0.00 0.00 0.00
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.05 0.00 0.00 0.00
6 HOUR SNOW 0.1 0.2 0.0 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 0.3 0.0 0.0 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 0.7 0.0 0.0 0.0
SNOW LEVEL (KFT) 2.2 2.4 3.0 3.3 3.7 3.6 3.4 3.2 3.0 3.7 4.6 5.6 6.2 5.9 5.6 5.3 5.0
SNOW DENSITY (%) 5 5 5 5 5 5 5 6 6 7 10 14 20 20 16 20 20
..ABSORAKA-BEARTOOTH/COOKE CITY MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK OV OV BK BK BK OV SC FW CL FW FW FW FW FW FW
CLOUD COVER (%) 65 65 70 75 65 60 60 75 50 10 5 5 25 20 15 10 15
TEMPERATURE 7 11 18 20 19 13 12 10 8 15 27 33 32 23 19 17 16
MAX/MIN TEMP 20 8 33 16
WIND DIR W W NW NW NW W W W SW SW SW SW SW SW SW SW S
WIND (MPH) 6 10 12 13 11 8 5 6 6 9 12 13 12 10 9 8 8
WIND GUST (MPH) 27 32 31 28 29 29 26
PRECIP PROB (%) 30 30 50 50 40 20 5 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE
6 HOUR QPF 0.01 0.04 0.02 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.05 0.02 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.09 0.03 0.00 0.00
6 HOUR SNOW 0.2 0.7 0.4 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 0.9 0.4 0.0 0.0
LOW END SNOW 0.2 0.0 0.0 0.0
HIGH END SNOW 1.4 0.5 0.0 0.0
SNOW LEVEL (KFT) 1.6 2.1 2.7 3.1 3.4 3.1 3.0 2.6 2.3 3.2 4.4 5.6 6.2 5.5 5.0 4.9 4.8
SNOW DENSITY (%) 5 5 5 6 5 5 5 5 5 6 6 8 9 9 8 9 9
..ABSORAKA MOUNTAINS ABOVE 6000FT NORTHEAST FACING
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK OV BK BK OV BK SC FW FW CL FW FW FW FW FW FW
CLOUD COVER (%) 70 60 70 70 70 70 50 40 25 10 5 10 25 25 15 15 20
TEMPERATURE 11 15 21 23 22 17 15 14 14 21 32 37 36 28 26 25 24
MAX/MIN TEMP 24 13 38 24
WIND DIR W W NW NW NW W W W W SW W W W SW SW SW SW
WIND (MPH) 13 16 18 17 16 11 10 12 14 13 14 14 13 16 18 17 17
WIND GUST (MPH) 35 41 46 42 41 28 27 31 35 34 36 35 36 39 41 40 36
PRECIP PROB (%) 20 30 50 40 40 30 5 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE
6 HOUR QPF 0.01 0.04 0.06 0.01 0.00 0.00 0.00 0.00
12 HOUR QPF 0.05 0.07 0.00 0.00
LOW END QPF 0.01 0.00 0.00 0.00
HIGH END QPF 0.08 0.07 0.00 0.00
6 HOUR SNOW 0.3 0.7 0.9 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.0 0.9 0.0 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 1.2 1.1 0.0 0.0
SNOW LEVEL (KFT) 1.8 2.1 2.7 3.2 3.5 3.2 3.0 2.7 2.5 3.4 4.5 5.6 6.2 5.6 5.3 5.1 5.0
SNOW DENSITY (%) 5 5 6 6 6 5 5 5 6 7 8 10 12 12 12 12 14
..ABSORAKA MOUNTAINS ABOVE 6000FT WEST FACING
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER BK BK OV OV BK BK BK SC SC FW FW FW SC SC FW FW FW
CLOUD COVER (%) 65 60 70 75 65 55 55 45 30 5 10 15 30 25 15 15 15
TEMPERATURE 11 15 22 24 23 17 15 13 11 19 33 38 37 28 24 22 20
MAX/MIN TEMP 25 11 38 20
WIND DIR W W NW NW NW W W W SW SW SW SW SW SW S S S
WIND (MPH) 6 9 11 12 11 6 4 5 6 8 11 12 12 10 9 9 8
WIND GUST (MPH) 31 34 39 39 39 27 23 26 29 31 35 35 37 34 35 35 34
PRECIP PROB (%) 30 30 50 50 30 10 0 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.02 0.07 0.03 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.09 0.03 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.12 0.04 0.00 0.00
6 HOUR SNOW 0.4 1.1 0.5 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.5 0.5 0.0 0.0
LOW END SNOW 0.2 0.0 0.0 0.0
HIGH END SNOW 1.9 0.7 0.0 0.0
SNOW LEVEL (KFT) 1.7 2.2 3.0 3.4 3.6 3.4 3.1 2.7 2.3 3.3 4.6 5.7 6.1 5.5 5.0 4.9 4.8
SNOW DENSITY (%) 5 5 5 6 6 5 5 5 5 6 7 10 12 12 11 11 12
..CRAZY MOUNTAINS
DATE FRIDAY 04/17/26 SATURDAY 04/18/26
TIME (LT) 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
6A 9A 12 3P 6P 9P 12 3A 6A 9A 12 3P 6P 9P 12 3A 6A
CLOUD COVER OV BK OV OV OV SC SC SC SC FW FW FW SC FW FW FW FW
CLOUD COVER (%) 70 65 75 80 70 45 50 45 35 10 5 10 25 25 20 20 20
TEMPERATURE 17 20 25 27 26 21 20 20 20 26 34 40 42 34 31 29 29
MAX/MIN TEMP 28 19 42 28
WIND DIR W W W NW NW NW W W W W W W W SW SW W SW
WIND (MPH) 16 19 20 18 16 11 10 12 13 17 19 19 17 13 13 13 14
WIND GUST (MPH) 39 46 44 40 36 27 31 34 41 46 44 42 31 33 32 32
PRECIP PROB (%) 20 30 30 60 40 10 5 0 0 0 0 0 0 0 0 0 0
PRECIP TYPE S S S S S
6 HOUR QPF 0.02 0.06 0.02 0.00 0.00 0.00 0.00 0.00
12 HOUR QPF 0.08 0.02 0.00 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.15 0.02 0.00 0.00
6 HOUR SNOW 0.3 0.9 0.3 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 1.2 0.3 0.0 0.0
LOW END SNOW 0.2 0.0 0.0 0.0
HIGH END SNOW 2.2 0.3 0.0 0.0
SNOW LEVEL (KFT) 1.8 2.2 2.9 3.1 3.4 3.2 3.1 3.2 3.0 3.4 4.2 5.2 5.9 5.7 5.4 5.1 4.9
SNOW DENSITY (%) 5 6 6 6 6 6 6 6 6 7 9 12 16 20 20 20 20
--- PRECIP TYPE CODES ---
CODE TYPE
T THUNDERSTORMS
R RAIN
S SNOW
I SLEET
Z FREEZING RAIN
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page