908
FWUS45 KTFX 271001
AVGTFX
AVALANCHE WEATHER GUIDANCE
NATIONAL WEATHER SERVICE GREAT FALLS MT
400 AM MDT MON APR 27 2026
..GLACIER NATIONAL PARK/MARIAS PASS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 BK SC SC SC SC SC SC BK BK BK BK BK BK OV
CLOUD COVER (%) 55 45 45 55 45 40 35 30 50 35 50 55 60 60 60 65 70
TEMPERATURE 10 19 28 33 34 28 26 25 25 31 37 40 40 34 32 31 30
MAX/MIN TEMP 35 24 41 30
WIND DIR S S S SW SW SW SW W W W W W W SW SW W W
WIND (MPH) 5 6 8 8 6 6 8 9 10 10 12 12 11 9 9 8 6
WIND GUST (MPH)
PRECIP PROB (%) 5 5 20 30 10 10 5 5 20 20 30 30 30 30 30 30 40
PRECIP TYPE S S S S S S S S S S S
6 HOUR QPF 0.00 0.01 0.00 0.00 0.00 0.02 0.01 0.01
12 HOUR QPF 0.01 0.00 0.02 0.02
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.05 0.02 0.06 0.18
6 HOUR SNOW 0.0 0.1 0.0 0.0 0.1 0.1 0.0 0.0
12 HOUR SNOW 0.1 0.0 0.2 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 0.6 0.1 0.2 0.9
SNOW LEVEL (KFT) 0.8 1.7 3.3 4.3 4.8 4.6 4.3 4.2 4.5 4.9 5.5 5.9 6.2 6.1 6.0 5.8 5.5
SNOW DENSITY (%) 5 6 6 7 9 9 9 8 8 10 11 14 16 16 16 14 12
..BOB MARSHALL/SCAPEGOAT WILDERNESS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC SC SC BK BK OV OV BK BK BK BK BK
CLOUD COVER (%) 55 45 50 60 50 40 40 35 60 55 75 75 60 65 65 60 65
TEMPERATURE 13 19 30 34 35 28 24 23 23 30 37 40 39 33 31 29 28
MAX/MIN TEMP 35 22 40 28
WIND DIR SE SE S SW W W W W W W W W W W W W W
WIND (MPH) 5 5 6 8 6 4 5 6 8 9 12 13 11 8 6 6 5
WIND GUST (MPH) 32 33 31
PRECIP PROB (%) 5 5 30 40 20 20 10 10 40 40 60 60 40 40 20 20 50
PRECIP TYPE S S S S S S S S S S S S S
6 HOUR QPF 0.00 0.03 0.01 0.00 0.01 0.05 0.02 0.01
12 HOUR QPF 0.03 0.01 0.06 0.03
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.06 0.03 0.08 0.07
6 HOUR SNOW 0.0 0.4 0.1 0.0 0.2 0.2 0.1 0.0
12 HOUR SNOW 0.4 0.1 0.4 0.1
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 0.7 0.3 0.4 0.4
SNOW LEVEL (KFT) 1.0 2.0 3.5 4.5 4.9 4.7 4.4 4.3 4.4 5.0 5.7 6.0 6.3 6.2 6.1 5.9 5.7
SNOW DENSITY (%) 6 6 6 7 8 8 7 7 7 8 10 14 14 14 14 12 12
..NEVADA MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC SC SC SC BK BK BK BK BK BK BK
CLOUD COVER (%) 60 55 55 60 45 35 35 45 50 45 70 70 50 60 65 55 60
TEMPERATURE 17 21 30 36 38 31 29 27 27 32 39 43 43 37 34 32 31
MAX/MIN TEMP 39 26 44 31
WIND DIR NE E SE W NW W W W W W W W W W W W W
WIND (MPH) 5 4 5 5 6 4 4 5 6 8 12 12 11 8 6 5 5
WIND GUST (MPH)
PRECIP PROB (%) 5 10 30 40 10 10 5 5 20 20 50 50 30 30 10 10 30
PRECIP TYPE S S S S S S S R S S S S
6 HOUR QPF 0.01 0.02 0.00 0.00 0.01 0.05 0.02 0.00
12 HOUR QPF 0.03 0.00 0.06 0.02
LOW END QPF 0.00 0.00 0.01 0.00
HIGH END QPF 0.05 0.02 0.08 0.04
6 HOUR SNOW 0.2 0.2 0.0 0.0 0.1 0.1 0.0 0.0
12 HOUR SNOW 0.4 0.0 0.2 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 0.5 0.1 0.2 0.1
SNOW LEVEL (KFT) 1.3 2.1 3.7 4.8 5.1 4.9 4.6 4.4 4.5 4.9 5.6 6.0 6.3 6.2 6.2 5.9 5.6
SNOW DENSITY (%) 6 6 7 10 12 11 10 9 8 9 14 20 20 20 20 16 14
..ELKHORN/BOULDER MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC BK BK SC BK BK SC BK
CLOUD COVER (%) 80 80 75 75 60 40 35 30 45 40 60 60 50 55 55 50 55
TEMPERATURE 17 20 28 33 35 28 26 24 24 30 38 41 41 34 31 29 29
MAX/MIN TEMP 36 23 42 28
WIND DIR E E SE NE NW W W W W W W W NW NW W W W
WIND (MPH) 5 5 5 6 6 4 5 5 6 8 11 12 12 8 6 5 5
WIND GUST (MPH) 28 29
PRECIP PROB (%) 30 30 40 50 20 20 5 10 20 20 40 40 20 20 10 10 30
PRECIP TYPE S S S S S S S S S S S S S S S
6 HOUR QPF 0.02 0.05 0.01 0.00 0.00 0.03 0.01 0.00
12 HOUR QPF 0.07 0.01 0.03 0.01
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.14 0.02 0.09 0.03
6 HOUR SNOW 0.3 0.7 0.1 0.0 0.1 0.2 0.0 0.0
12 HOUR SNOW 1.0 0.1 0.3 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 1.8 0.1 0.3 0.1
SNOW LEVEL (KFT) 2.6 3.0 4.1 5.0 5.3 5.1 4.8 4.6 4.5 5.0 5.6 6.0 6.4 6.3 6.2 6.0 5.7
SNOW DENSITY (%) 6 5 6 7 9 8 7 7 7 7 10 14 16 14 14 12 11
..BIG BELT MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC SC SC SC BK BK BK BK BK BK BK
CLOUD COVER (%) 70 60 65 65 50 35 25 35 50 40 65 65 55 60 70 55 60
TEMPERATURE 16 20 28 35 37 31 29 27 26 32 40 43 44 38 35 33 32
MAX/MIN TEMP 38 26 45 31
WIND DIR NE SE S E N S SW SW SW SW W W W W SW SW SW
WIND (MPH) 5 4 5 5 5 4 5 5 6 8 11 12 12 6 5 5 5
WIND GUST (MPH) 21 29 31 33
PRECIP PROB (%) 5 10 40 40 10 10 5 5 20 20 50 50 30 30 10 10 40
PRECIP TYPE S S S S S S S S S S S S S S S
6 HOUR QPF 0.02 0.03 0.00 0.00 0.00 0.05 0.01 0.00
12 HOUR QPF 0.05 0.00 0.05 0.01
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.08 0.02 0.09 0.03
6 HOUR SNOW 0.3 0.3 0.0 0.0 0.0 0.1 0.0 0.0
12 HOUR SNOW 0.6 0.0 0.1 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 0.9 0.1 0.2 0.1
SNOW LEVEL (KFT) 1.9 2.5 3.6 4.6 5.0 4.9 4.6 4.4 4.4 4.9 5.5 5.9 6.2 6.1 6.0 5.8 5.6
SNOW DENSITY (%) 6 6 7 10 12 11 10 10 8 10 12 20 25 20 20 16 14
..LITTLE BELT MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC BK BK OV OV BK BK BK BK BK
CLOUD COVER (%) 55 55 65 75 60 50 30 35 55 55 75 75 60 60 60 60 70
TEMPERATURE 13 19 28 34 35 28 25 24 24 32 40 42 41 34 32 30 29
MAX/MIN TEMP 36 23 43 29
WIND DIR SE SE SE S SW S SW SW W W W W W W W SW SW
WIND (MPH) 3 4 6 6 5 4 5 5 5 6 11 12 11 6 5 5 5
WIND GUST (MPH) 28 28
PRECIP PROB (%) 10 20 50 50 30 20 10 10 40 40 60 60 40 40 20 20 50
PRECIP TYPE S S S S S S S S S S S S S S S S S
6 HOUR QPF 0.02 0.04 0.01 0.00 0.01 0.06 0.02 0.00
12 HOUR QPF 0.06 0.01 0.07 0.02
LOW END QPF 0.00 0.00 0.01 0.00
HIGH END QPF 0.08 0.03 0.12 0.05
6 HOUR SNOW 0.3 0.5 0.1 0.0 0.1 0.2 0.1 0.0
12 HOUR SNOW 0.8 0.1 0.3 0.1
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 1.0 0.3 0.5 0.3
SNOW LEVEL (KFT) 1.8 2.4 3.4 4.4 4.8 4.5 4.2 4.2 4.3 4.8 5.4 5.8 6.0 5.9 5.8 5.6 5.5
SNOW DENSITY (%) 5 5 6 7 8 7 8 8 7 8 11 14 16 16 16 14 12
..HIGHWOOD MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC SC SC FW FW SC SC BK BK BK BK BK SC BK
CLOUD COVER (%) 45 35 35 50 30 30 15 25 35 30 65 65 55 60 55 45 55
TEMPERATURE 12 19 28 35 38 32 29 29 28 35 42 45 45 39 36 34 33
MAX/MIN TEMP 39 28 46 33
WIND DIR SE SE SE S SE S SW W W W W W W W SW SW W
WIND (MPH) 8 8 8 6 6 6 8 8 9 10 14 14 13 9 9 9 9
WIND GUST (MPH)
PRECIP PROB (%) 0 5 20 20 10 20 5 5 10 10 50 50 30 30 10 10 30
PRECIP TYPE S S S S S S S S S S
6 HOUR QPF 0.00 0.01 0.01 0.00 0.00 0.04 0.02 0.00
12 HOUR QPF 0.01 0.01 0.04 0.02
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.02 0.02 0.06 0.03
6 HOUR SNOW 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0
12 HOUR SNOW 0.1 0.0 0.0 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 0.2 0.0 0.0 0.0
SNOW LEVEL (KFT) 1.1 1.8 3.0 3.9 4.4 4.3 4.3 4.2 4.2 4.6 5.2 5.5 5.8 5.8 5.7 5.4 5.2
SNOW DENSITY (%) 6 6 7 10 12 12 12 12 12 12 16 25 25 25 25 20 16
..SNOWY/JUDITH MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 BK BK SC SC FW FW SC SC BK BK BK SC SC SC SC
CLOUD COVER (%) 75 75 70 65 50 30 25 25 40 40 60 65 55 50 50 40 50
TEMPERATURE 17 23 30 34 36 28 26 26 27 37 44 46 44 37 34 32 31
MAX/MIN TEMP 37 23 47 30
WIND DIR SE SE SE S S S S SW W W NW NW NW W W W W
WIND (MPH) 5 6 8 8 6 6 6 6 6 6 10 11 10 6 6 6 8
WIND GUST (MPH) 27
PRECIP PROB (%) 20 30 30 20 10 10 5 5 20 20 50 50 20 20 5 5 30
PRECIP TYPE S S S S S S S S S S S
6 HOUR QPF 0.03 0.01 0.00 0.00 0.00 0.03 0.01 0.00
12 HOUR QPF 0.04 0.00 0.03 0.01
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.05 0.01 0.07 0.02
6 HOUR SNOW 0.4 0.2 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 0.7 0.0 0.1 0.0
SNOW LEVEL (KFT) 1.3 1.8 2.7 3.5 4.0 3.7 3.6 3.8 4.0 4.6 5.2 5.6 5.8 5.7 5.6 5.2 5.0
SNOW DENSITY (%) 5 5 6 8 10 10 11 11 12 12 16 20 25 25 25 20 16
..BEARS PAW MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC SC SC SC SC SC SC SC SC SC SC SC SC BK
CLOUD COVER (%) 40 25 30 30 30 35 35 35 40 35 35 50 45 40 40 50 55
TEMPERATURE 8 16 27 36 39 31 28 27 28 37 45 49 48 39 34 33 32
MAX/MIN TEMP 40 25 49 31
WIND DIR SE S S S S SE SE S W SW W NW NW N N NW NW
WIND (MPH) 4 5 6 8 5 5 5 4 3 4 9 11 10 5 4 4 4
WIND GUST (MPH)
PRECIP PROB (%) 0 0 10 10 10 10 10 10 20 20 20 20 10 10 10 10 20
PRECIP TYPE S S S S 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 0.00 0.01 0.01
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) 0.2 0.7 2.0 3.0 3.4 3.2 3.0 3.3 3.7 4.1 4.7 5.1 5.4 5.2 4.9 4.6 4.2
SNOW DENSITY (%) 5 5 6 10 12 12 12 14 14 16 20 25 33 25 25 20 16
..CASTLE/CRAZY MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 FW SC SC SC BK BK BK BK BK BK BK
CLOUD COVER (%) 75 80 80 80 65 45 25 35 45 35 60 60 55 50 60 55 60
TEMPERATURE 19 21 27 33 34 28 24 24 24 31 40 42 41 35 32 30 29
MAX/MIN TEMP 35 23 43 29
WIND DIR E E SE SE E SE SW SW SW W W W W W W SW W
WIND (MPH) 8 9 9 9 6 5 4 5 6 10 16 17 16 9 6 6 6
WIND GUST (MPH) 26 26 28 36 37 37
PRECIP PROB (%) 40 50 40 30 10 10 5 5 10 10 40 40 20 20 5 5 30
PRECIP TYPE S S S S S S S S S S S
6 HOUR QPF 0.03 0.03 0.00 0.00 0.00 0.04 0.01 0.00
12 HOUR QPF 0.06 0.00 0.04 0.01
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.08 0.02 0.12 0.05
6 HOUR SNOW 0.6 0.4 0.0 0.0 0.0 0.1 0.0 0.0
12 HOUR SNOW 1.0 0.0 0.1 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 1.2 0.1 0.3 0.2
SNOW LEVEL (KFT) 2.3 2.6 3.5 4.4 4.8 4.5 4.2 4.2 4.4 4.9 5.5 5.8 6.1 6.0 5.9 5.7 5.6
SNOW DENSITY (%) 5 5 6 7 8 7 7 7 7 7 11 14 16 16 14 12 12
..BRIDGER RANGE
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 FW SC SC SC BK BK BK SC BK SC BK
CLOUD COVER (%) 80 85 80 75 60 35 20 30 45 40 60 60 55 50 55 50 60
TEMPERATURE 20 21 26 33 35 28 25 25 24 30 39 42 41 35 32 31 29
MAX/MIN TEMP 35 23 43 29
WIND DIR E SE SE SE E SE SW SW W W W W W W SW SW SW
WIND (MPH) 8 8 6 5 5 4 4 3 4 6 12 12 11 5 4 4 4
WIND GUST (MPH) 26 31 29
PRECIP PROB (%) 40 60 50 30 20 10 5 5 20 20 40 40 20 20 10 10 40
PRECIP TYPE S S S S S S S S S S S S S
6 HOUR QPF 0.05 0.03 0.00 0.00 0.00 0.04 0.01 0.00
12 HOUR QPF 0.08 0.00 0.04 0.01
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.11 0.01 0.10 0.03
6 HOUR SNOW 0.8 0.5 0.1 0.0 0.1 0.2 0.0 0.0
12 HOUR SNOW 1.3 0.1 0.3 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 1.5 0.1 0.3 0.1
SNOW LEVEL (KFT) 2.6 2.8 3.6 4.6 5.0 4.6 4.5 4.5 4.4 4.9 5.5 5.9 6.1 6.1 6.0 5.8 5.6
SNOW DENSITY (%) 6 5 6 8 10 8 8 7 7 8 11 16 16 16 16 14 12
..MADISON RANGE/SPANISH PEAKS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC SC SC BK BK BK BK BK SC BK
CLOUD COVER (%) 85 85 85 80 60 55 40 40 50 45 60 60 50 50 55 50 60
TEMPERATURE 15 18 24 29 31 24 21 20 19 25 33 36 36 30 27 26 24
MAX/MIN TEMP 32 18 37 24
WIND DIR NE NE W NW NW NW W W W W W W W W SW SW S
WIND (MPH) 4 5 6 8 6 4 4 3 4 5 10 10 9 4 4 4 4
WIND GUST (MPH) 28 27 26
PRECIP PROB (%) 70 70 80 70 40 30 20 20 20 20 40 40 20 20 10 10 30
PRECIP TYPE S S S S S S S S S S S S S S S S S
6 HOUR QPF 0.07 0.09 0.03 0.00 0.00 0.02 0.01 0.00
12 HOUR QPF 0.16 0.03 0.02 0.01
LOW END QPF 0.04 0.00 0.00 0.00
HIGH END QPF 0.22 0.04 0.07 0.03
6 HOUR SNOW 1.2 1.3 0.4 0.0 0.1 0.2 0.1 0.0
12 HOUR SNOW 2.5 0.4 0.3 0.1
LOW END SNOW 0.5 0.0 0.0 0.0
HIGH END SNOW 3.0 0.5 0.5 0.2
SNOW LEVEL (KFT) 3.6 4.0 4.9 5.5 5.7 5.3 4.9 4.7 4.6 5.1 5.6 6.1 6.4 6.3 6.1 6.0 5.8
SNOW DENSITY (%) 5 5 6 7 7 6 6 6 6 6 7 10 11 10 10 9 8
..GALLATIN RANGE/HYALITE MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC BK BK BK SC BK BK BK
CLOUD COVER (%) 90 85 85 75 60 50 30 40 45 40 60 60 50 45 55 50 60
TEMPERATURE 17 19 25 30 32 24 21 20 19 26 34 38 37 30 27 26 25
MAX/MIN TEMP 32 18 38 25
WIND DIR E NE NE NW NW SE SW SW W W W W W W SW SW SW
WIND (MPH) 4 4 6 8 6 4 4 4 4 5 10 11 9 5 4 4 4
WIND GUST (MPH) 27
PRECIP PROB (%) 60 70 70 60 20 20 10 10 20 20 40 40 20 20 10 10 30
PRECIP TYPE S S S S S S S S S S S S S
6 HOUR QPF 0.06 0.09 0.02 0.00 0.01 0.02 0.01 0.00
12 HOUR QPF 0.15 0.02 0.03 0.01
LOW END QPF 0.03 0.00 0.00 0.00
HIGH END QPF 0.22 0.04 0.08 0.04
6 HOUR SNOW 1.0 1.4 0.3 0.0 0.1 0.2 0.0 0.0
12 HOUR SNOW 2.4 0.3 0.3 0.0
LOW END SNOW 0.5 0.0 0.0 0.0
HIGH END SNOW 2.9 0.4 0.5 0.3
SNOW LEVEL (KFT) 3.2 3.7 4.6 5.3 5.4 5.1 4.8 4.5 4.4 5.0 5.6 6.1 6.3 6.1 6.1 5.9 5.8
SNOW DENSITY (%) 5 5 6 6 7 6 6 6 6 6 7 10 11 11 10 9 9
..LIONHEAD RANGE
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 OV BK BK BK BK BK BK BK SC SC BK SC
CLOUD COVER (%) 75 80 75 80 65 70 60 60 65 55 65 65 55 45 40 55 50
TEMPERATURE 21 25 30 35 34 28 26 23 21 27 36 39 40 32 28 25 24
MAX/MIN TEMP 38 20 40 23
WIND DIR E S SW SW W SW SW SW SW SW W W W SW S S SE
WIND (MPH) 3 5 9 9 6 3 2 2 2 3 8 9 8 4 3 2 3
WIND GUST (MPH)
PRECIP PROB (%) 70 50 50 70 50 20 20 10 30 30 50 50 20 20 5 5 20
PRECIP TYPE S S S S S S S S S S S S S S
6 HOUR QPF 0.07 0.16 0.05 0.01 0.01 0.03 0.01 0.00
12 HOUR QPF 0.23 0.06 0.04 0.01
LOW END QPF 0.01 0.00 0.00 0.00
HIGH END QPF 0.30 0.07 0.08 0.02
6 HOUR SNOW 1.1 2.0 0.6 0.1 0.2 0.2 0.0 0.0
12 HOUR SNOW 3.1 0.7 0.4 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 3.3 0.9 0.5 0.1
SNOW LEVEL (KFT) 4.2 4.6 5.4 6.0 6.0 5.7 5.4 5.0 4.7 5.1 5.8 6.3 6.5 6.4 6.3 5.9 5.8
SNOW DENSITY (%) 6 6 7 8 8 7 7 7 6 6 8 14 16 16 12 11 10
..TOBACCO ROOT MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 FW SC SC SC BK BK BK BK BK SC BK
CLOUD COVER (%) 85 85 80 70 55 50 25 30 40 30 50 55 55 55 50 45 55
TEMPERATURE 15 18 25 31 32 26 24 23 22 28 36 39 37 33 30 28 27
MAX/MIN TEMP 33 22 39 27
WIND DIR NE N N NW NW NW W W W W W W W NW W SW SW
WIND (MPH) 6 6 8 8 9 5 5 5 6 8 11 11 11 8 5 6 6
WIND GUST (MPH)
PRECIP PROB (%) 60 50 40 60 30 20 10 10 10 10 30 30 20 20 10 10 20
PRECIP TYPE S S S S S S S S S S S S S S S
6 HOUR QPF 0.06 0.08 0.03 0.00 0.00 0.03 0.01 0.00
12 HOUR QPF 0.14 0.03 0.03 0.01
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.17 0.03 0.07 0.03
6 HOUR SNOW 1.1 1.1 0.3 0.0 0.0 0.3 0.1 0.0
12 HOUR SNOW 2.2 0.3 0.3 0.1
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 2.4 0.4 0.5 0.2
SNOW LEVEL (KFT) 3.1 3.5 4.4 5.2 5.4 5.2 4.8 4.7 4.6 5.0 5.5 6.0 6.3 6.2 6.1 5.9 5.8
SNOW DENSITY (%) 5 5 6 7 7 7 7 6 6 6 8 11 12 11 11 10 10
..SNOWCREST/GRAVELLY/RUBY/BLACKTAIL RANGES
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC SC SC SC BK BK BK BK SC BK
CLOUD COVER (%) 85 85 75 75 60 55 40 40 40 30 50 55 55 55 55 45 55
TEMPERATURE 19 21 29 34 35 28 25 23 22 28 37 40 40 33 31 29 28
MAX/MIN TEMP 36 22 41 28
WIND DIR NE NE NW NW NW N NW W W W W W W NW W SW SW
WIND (MPH) 5 5 8 9 9 5 4 4 4 5 11 12 11 5 4 3 3
WIND GUST (MPH)
PRECIP PROB (%) 70 70 50 60 40 30 20 20 20 20 30 30 20 20 10 10 20
PRECIP TYPE S S S S S S S S S S S S S S S S S
6 HOUR QPF 0.05 0.06 0.03 0.00 0.00 0.01 0.00 0.00
12 HOUR QPF 0.11 0.03 0.01 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.17 0.03 0.04 0.01
6 HOUR SNOW 0.9 0.9 0.3 0.0 0.0 0.1 0.0 0.0
12 HOUR SNOW 1.8 0.3 0.1 0.0
LOW END SNOW 0.3 0.0 0.0 0.0
HIGH END SNOW 2.1 0.4 0.1 0.1
SNOW LEVEL (KFT) 3.7 4.0 4.9 5.5 5.7 5.5 5.2 4.9 4.7 5.1 5.6 6.1 6.4 6.3 6.2 6.0 5.9
SNOW DENSITY (%) 5 5 6 8 8 7 7 6 6 6 8 12 14 14 12 11 10
..CENTENNIAL MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 OV BK SC SC SC SC BK BK BK SC SC BK SC
CLOUD COVER (%) 80 80 80 85 70 60 50 50 45 35 60 60 55 45 50 55 45
TEMPERATURE 22 23 28 33 33 27 24 23 21 27 35 38 38 33 30 28 26
MAX/MIN TEMP 35 21 39 26
WIND DIR NE NE W W NW N NW NW NW W W W W W N N NE
WIND (MPH) 9 8 10 10 10 8 6 6 6 8 12 12 11 6 5 5 5
WIND GUST (MPH)
PRECIP PROB (%) 70 60 40 80 40 20 20 20 20 20 40 40 10 10 5 5 20
PRECIP TYPE S S S S S S S S S S S S S
6 HOUR QPF 0.09 0.18 0.04 0.00 0.00 0.02 0.00 0.00
12 HOUR QPF 0.27 0.04 0.02 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.33 0.05 0.05 0.01
6 HOUR SNOW 1.4 2.4 0.5 0.0 0.1 0.2 0.0 0.0
12 HOUR SNOW 3.8 0.5 0.3 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 4.5 0.6 0.3 0.1
SNOW LEVEL (KFT) 4.0 4.3 5.3 5.8 6.0 5.7 5.3 5.0 4.8 5.2 5.8 6.3 6.6 6.5 6.3 6.0 5.8
SNOW DENSITY (%) 5 6 6 7 9 7 7 6 6 6 8 12 16 14 12 11 10
..ANACONDA/HIGHLAND RANGES
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC SC SC SC BK BK SC BK BK SC SC
CLOUD COVER (%) 65 65 70 70 45 35 25 35 45 30 55 60 50 55 50 45 45
TEMPERATURE 20 23 30 34 34 28 25 24 23 28 37 40 40 34 30 29 28
MAX/MIN TEMP 36 23 41 28
WIND DIR NE N NW NW NW NW NW NW NW W W W W NW W W SW
WIND (MPH) 4 4 6 8 8 5 3 3 3 4 8 9 9 5 3 3 3
WIND GUST (MPH)
PRECIP PROB (%) 30 20 40 50 20 10 5 5 20 20 40 40 10 10 5 5 20
PRECIP TYPE S S S S S S S S S S S S S
6 HOUR QPF 0.03 0.05 0.01 0.00 0.00 0.03 0.00 0.00
12 HOUR QPF 0.08 0.01 0.03 0.00
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.17 0.02 0.09 0.02
6 HOUR SNOW 0.4 0.7 0.2 0.0 0.0 0.2 0.0 0.0
12 HOUR SNOW 1.1 0.2 0.2 0.0
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 2.0 0.2 0.4 0.1
SNOW LEVEL (KFT) 3.2 3.7 4.6 5.2 5.4 5.2 4.9 4.7 4.5 5.0 5.7 6.1 6.5 6.4 6.3 6.0 5.7
SNOW DENSITY (%) 6 5 6 7 8 7 7 6 6 6 8 12 14 12 12 11 10
..PIONEER MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 SC SC SC SC BK BK BK BK BK SC BK
CLOUD COVER (%) 80 75 80 80 60 50 35 40 50 45 55 60 50 60 55 50 55
TEMPERATURE 17 21 28 32 33 27 23 22 21 27 35 38 38 32 29 27 26
MAX/MIN TEMP 34 21 39 26
WIND DIR NE W W NW NW NW W W W W W W W NW W W W
WIND (MPH) 3 4 5 8 9 5 4 5 5 6 10 10 10 6 4 4 4
WIND GUST (MPH) 27
PRECIP PROB (%) 40 40 60 70 40 30 20 20 30 30 40 40 20 20 20 20 30
PRECIP TYPE S S S S S S S S S S S S S S S S S
6 HOUR QPF 0.05 0.07 0.02 0.00 0.00 0.02 0.00 0.00
12 HOUR QPF 0.12 0.02 0.02 0.00
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.19 0.02 0.07 0.03
6 HOUR SNOW 0.8 1.1 0.3 0.0 0.1 0.2 0.0 0.0
12 HOUR SNOW 1.9 0.3 0.3 0.0
LOW END SNOW 0.1 0.0 0.0 0.0
HIGH END SNOW 2.5 0.3 0.4 0.1
SNOW LEVEL (KFT) 3.4 3.9 4.7 5.3 5.5 5.2 4.9 4.7 4.6 5.0 5.7 6.2 6.5 6.4 6.3 6.1 5.8
SNOW DENSITY (%) 5 5 6 7 8 7 6 6 6 6 7 11 12 12 10 10 9
..BEAVERHEAD/TENDOY MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 BK OV BK SC SC SC SC FW SC SC SC BK BK SC SC
CLOUD COVER (%) 80 75 70 70 55 50 40 35 35 25 50 50 45 55 55 50 45
TEMPERATURE 20 23 30 34 33 27 24 23 22 27 36 39 39 33 30 28 27
MAX/MIN TEMP 35 21 40 27
WIND DIR N N NW NW NW NW NW W W W W W W NW NW W SW
WIND (MPH) 6 6 9 10 10 8 6 5 5 8 11 11 11 6 4 4 4
WIND GUST (MPH) 27 28
PRECIP PROB (%) 60 30 50 60 30 20 10 5 10 10 30 30 10 10 5 5 20
PRECIP TYPE S S S S S S S S S S S S S
6 HOUR QPF 0.05 0.08 0.03 0.00 0.00 0.02 0.00 0.00
12 HOUR QPF 0.13 0.03 0.02 0.00
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.18 0.03 0.04 0.02
6 HOUR SNOW 0.9 1.2 0.4 0.0 0.0 0.1 0.0 0.0
12 HOUR SNOW 2.1 0.4 0.1 0.0
LOW END SNOW 0.2 0.0 0.0 0.0
HIGH END SNOW 2.4 0.5 0.2 0.1
SNOW LEVEL (KFT) 3.8 4.1 5.0 5.5 5.7 5.5 5.2 4.9 4.7 5.1 5.6 6.1 6.5 6.4 6.3 6.1 5.9
SNOW DENSITY (%) 5 5 6 7 8 7 6 6 6 6 7 11 14 12 11 10 10
..ABSORAKA-BEARTOOTH/COOKE CITY MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 OV BK SC BK SC SC OV OV BK BK SC BK BK
CLOUD COVER (%) 85 70 80 85 80 60 45 55 45 45 75 75 55 50 50 60 60
TEMPERATURE 11 16 24 28 27 20 17 15 13 20 29 32 31 24 21 20 19
MAX/MIN TEMP 29 13 32 19
WIND DIR E SE SW NW NW NW W W W W W W W W W SW SW
WIND (MPH) 4 5 9 10 6 3 3 3 4 5 11 12 10 5 4 4 4
WIND GUST (MPH)
PRECIP PROB (%) 40 40 70 80 50 10 10 10 20 20 60 60 30 30 5 5 30
PRECIP TYPE
6 HOUR QPF 0.07 0.18 0.05 0.00 0.01 0.06 0.02 0.00
12 HOUR QPF 0.25 0.05 0.07 0.02
LOW END QPF 0.02 0.00 0.00 0.00
HIGH END QPF 0.29 0.05 0.08 0.04
6 HOUR SNOW 1.2 2.9 0.8 0.0 0.2 0.8 0.2 0.0
12 HOUR SNOW 4.1 0.8 1.0 0.2
LOW END SNOW 0.3 0.0 0.0 0.0
HIGH END SNOW 4.3 0.8 1.0 0.5
SNOW LEVEL (KFT) 3.4 4.0 5.2 5.8 5.6 5.2 4.7 4.4 4.2 4.8 5.6 6.1 6.5 6.1 6.0 5.9 5.8
SNOW DENSITY (%) 5 5 5 6 6 6 6 6 5 5 6 7 8 7 7 7 7
..ABSORAKA MOUNTAINS ABOVE 6000FT NORTHEAST FACING
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 OV BK SC SC SC SC OV OV BK BK SC SC BK
CLOUD COVER (%) 90 85 85 85 80 60 30 40 45 40 70 70 55 55 45 50 55
TEMPERATURE 12 16 21 25 26 21 18 18 17 26 32 35 34 28 25 24 24
MAX/MIN TEMP 28 17 35 24
WIND DIR E E E NE NW W W SW W W W W W W SW SW SW
WIND (MPH) 6 9 12 11 9 4 6 8 9 9 13 13 12 9 9 9 10
WIND GUST (MPH) 31 29 28 33 34 34 26
PRECIP PROB (%) 50 60 80 70 40 10 10 10 20 20 60 60 30 30 10 10 30
PRECIP TYPE
6 HOUR QPF 0.06 0.13 0.05 0.00 0.01 0.04 0.02 0.00
12 HOUR QPF 0.19 0.05 0.05 0.02
LOW END QPF 0.03 0.00 0.00 0.00
HIGH END QPF 0.23 0.05 0.09 0.05
6 HOUR SNOW 1.1 2.0 0.7 0.0 0.1 0.5 0.2 0.0
12 HOUR SNOW 3.1 0.7 0.6 0.2
LOW END SNOW 0.4 0.0 0.0 0.0
HIGH END SNOW 3.4 0.7 0.8 0.4
SNOW LEVEL (KFT) 2.9 3.3 4.1 4.7 5.0 4.7 4.4 4.2 4.2 4.8 5.5 6.1 6.4 6.1 6.0 5.9 5.8
SNOW DENSITY (%) 5 5 5 6 6 6 7 6 6 6 7 9 10 10 9 9 9
..ABSORAKA MOUNTAINS ABOVE 6000FT WEST FACING
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 OV BK SC BK SC SC BK BK BK SC BK SC BK
CLOUD COVER (%) 85 75 80 80 70 60 45 50 50 40 65 65 55 45 50 50 55
TEMPERATURE 17 20 27 31 32 25 22 20 18 25 34 37 37 30 27 25 23
MAX/MIN TEMP 34 18 38 23
WIND DIR E E SW W NW NW W W W W W W W W SW SW SW
WIND (MPH) 4 5 8 9 8 4 3 3 4 5 10 11 10 5 4 4 4
WIND GUST (MPH) 23 31 29 27 31 32 32 23 21 23
PRECIP PROB (%) 50 50 70 70 40 10 10 10 20 20 40 40 20 20 5 5 20
PRECIP TYPE S S S S S S S S S S S S S S
6 HOUR QPF 0.06 0.11 0.04 0.00 0.01 0.03 0.01 0.00
12 HOUR QPF 0.17 0.04 0.04 0.01
LOW END QPF 0.03 0.00 0.00 0.00
HIGH END QPF 0.24 0.05 0.08 0.04
6 HOUR SNOW 1.0 1.6 0.6 0.0 0.1 0.3 0.1 0.0
12 HOUR SNOW 2.6 0.6 0.4 0.1
LOW END SNOW 0.3 0.0 0.0 0.0
HIGH END SNOW 3.2 0.7 0.6 0.3
SNOW LEVEL (KFT) 3.5 4.1 5.0 5.7 5.7 5.3 4.9 4.5 4.4 4.9 5.6 6.1 6.4 6.2 6.1 5.9 5.8
SNOW DENSITY (%) 5 5 6 7 7 6 6 6 6 6 7 10 11 10 9 9 8
..CRAZY MOUNTAINS
DATE MONDAY 04/27/26 TUESDAY 04/28/26
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 FW SC SC SC BK BK BK SC SC BK BK
CLOUD COVER (%) 85 90 90 85 70 40 20 40 50 40 65 65 50 50 50 55 55
TEMPERATURE 17 19 23 28 30 24 22 22 22 30 36 39 38 32 30 29 28
MAX/MIN TEMP 30 20 40 28
WIND DIR E SE SE SE S SW W W W W W W W W W W W
WIND (MPH) 9 10 10 9 9 5 5 6 9 11 17 18 17 10 9 9 10
WIND GUST (MPH) 27 29 37 39 39
PRECIP PROB (%) 40 60 50 30 20 5 5 5 20 20 50 50 20 20 5 5 30
PRECIP TYPE S S S S S S S S S S S S
6 HOUR QPF 0.06 0.05 0.01 0.00 0.01 0.05 0.01 0.00
12 HOUR QPF 0.11 0.01 0.06 0.01
LOW END QPF 0.00 0.00 0.00 0.00
HIGH END QPF 0.14 0.02 0.09 0.04
6 HOUR SNOW 1.1 0.9 0.1 0.0 0.1 0.4 0.1 0.0
12 HOUR SNOW 2.0 0.1 0.5 0.1
LOW END SNOW 0.0 0.0 0.0 0.0
HIGH END SNOW 2.1 0.2 0.6 0.3
SNOW LEVEL (KFT) 2.4 2.6 3.5 4.3 4.7 4.4 4.2 4.3 4.5 4.9 5.5 5.9 6.2 6.0 5.9 5.7 5.7
SNOW DENSITY (%) 5 5 5 6 7 7 7 7 7 7 9 12 12 12 12 11 11
--- PRECIP TYPE CODES ---
CODE TYPE
T THUNDERSTORMS
R RAIN
S SNOW
I SLEET
Z FREEZING RAIN
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