Avalanche Weather Guidance
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
636
FWUS45 KTFX 091002
AVGTFX
Avalanche Weather Guidance
National Weather Service Great Falls MT
301 AM MST Tue Dec 9 2025
...Glacier National Park/Marias Pass...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV BK OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 80 85 70 60 80 80 90 90 95 90 85 85 85 90 85 85 90
Temperature 34 30 29 28 26 26 26 27 30 33 35 36 35 34 34 33 30
Max/Min Temp 34 25 36 23
Wind Dir W W W W W SW SW SW SW SW SW W W W W W W
Wind (mph) 40 34 23 21 18 18 16 17 23 32 32 26 23 21 19 18 17
Wind Gust (mph) 87 87 54 49 42 40 34 37 51 78 78 57 52 52 46 44 41
Precip Prob (%) 40 10 5 0 0 0 40 70 90 90 80 80 70 70 70 70 80
Precip Type S S S S S S S S R R S S S
6 Hour QPF 0.10 0.00 0.00 0.12 0.36 0.19 0.23 0.37
12 Hour QPF 0.10 0.12 0.55 0.60
Low End QPF 0.02 0.09 0.12 0.13
High End QPF 0.30 0.53 0.79 0.89
6 Hour Snow 0.8 0.0 0.0 1.5 2.0 0.8 1.3 3.2
12 Hour Snow 0.8 1.5 2.8 4.5
Low End Snow 0.2 0.8 0.0 0.5
High End Snow 2.8 3.6 3.6 7.0
Snow Level (kft) 5.7 4.1 3.2 3.2 3.0 3.1 3.1 3.1 4.0 5.1 6.3 6.7 6.4 5.9 5.3 4.8 4.0
Snow Density (%) 11 10 7 7 8 8 7 8 11 12 14 12 12 12 11 11 8
...Bob Marshall/Scapegoat Wilderness...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV BK BK OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 95 75 70 65 70 80 90 95 95 95 95 90 90 90 90 90 95
Temperature 35 33 31 29 26 26 26 27 31 35 36 38 36 36 37 36 34
Max/Min Temp 35 25 38 31
Wind Dir W W W W W W SW SW SW W W W W W W W W
Wind (mph) 37 35 25 20 16 13 9 11 18 24 25 23 21 23 20 19 17
Wind Gust (mph) 87 86 59 54 46 39 26 28 43 72 75 58 52 57 52 48 43
Precip Prob (%) 90 20 20 5 5 10 30 90 100 100 90 90 90 90 80 80 90
Precip Type S S S S S S S S S S S S S S S
6 Hour QPF 0.28 0.00 0.01 0.19 0.47 0.31 0.30 0.37
12 Hour QPF 0.28 0.20 0.78 0.67
Low End QPF 0.08 0.16 0.20 0.12
High End QPF 0.38 0.70 0.98 0.95
6 Hour Snow 1.8 0.0 0.1 2.3 2.3 0.4 0.6 1.3
12 Hour Snow 1.8 2.4 2.7 1.9
Low End Snow 0.6 0.9 0.0 0.0
High End Snow 3.5 3.4 3.3 4.9
Snow Level (kft) 6.3 5.3 4.1 3.7 3.4 3.3 3.3 3.3 4.7 6.2 7.6 7.8 7.4 7.2 6.7 6.3 5.7
Snow Density (%) 12 11 8 8 8 8 8 9 14 16 16 16 14 16 14 14 11
...Nevada Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV BK BK OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 90 75 65 70 80 90 95 95 95 95 85 85 90 90 90 90 90
Temperature 37 35 33 31 29 29 29 30 34 37 38 40 39 40 41 41 39
Max/Min Temp 37 29 41 35
Wind Dir W W W W W W SW S SW SW W W W W W W W
Wind (mph) 34 33 24 20 16 12 9 11 17 21 23 23 21 24 21 20 18
Wind Gust (mph) 85 75 49 43 35 28 41 49 48 47 46 50 49 46 41
Precip Prob (%) 90 60 10 5 0 10 30 90 90 90 80 80 80 80 80 80 90
Precip Type S S S S S S R R S S R R R S
6 Hour QPF 0.32 0.00 0.01 0.21 0.36 0.19 0.16 0.19
12 Hour QPF 0.32 0.22 0.55 0.35
Low End QPF 0.04 0.11 0.03 0.02
High End QPF 0.41 0.62 0.67 0.52
6 Hour Snow 0.7 0.0 0.1 2.1 0.6 0.0 0.0 0.0
12 Hour Snow 0.7 2.2 0.6 0.0
Low End Snow 0.1 0.4 0.0 0.0
High End Snow 2.1 2.6 0.8 0.6
Snow Level (kft) 6.6 6.0 4.8 4.2 3.9 3.8 3.7 3.6 5.0 6.9 8.2 8.1 7.8 7.7 7.3 6.9 6.4
Snow Density (%) 25 20 11 11 10 10 10 11 20 25 25 25 20 25 20 20 14
...Elkhorn/Boulder Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV BK BK OV OV OV OV OV OV BK BK OV OV OV OV OV
Cloud Cover (%) 80 75 65 60 70 90 95 95 90 85 65 70 75 75 80 80 85
Temperature 36 35 34 32 28 28 28 29 33 36 39 40 38 38 39 39 38
Max/Min Temp 37 27 41 36
Wind Dir W W W W W W SW SW SW SW W W W W W W W
Wind (mph) 28 28 23 19 13 10 6 10 14 18 19 19 18 20 19 18 17
Wind Gust (mph) 72 70 52 44 32 35 42 43 43 41 44 43 42 41
Precip Prob (%) 70 60 20 5 0 5 50 90 70 70 40 40 60 60 60 60 70
Precip Type S S S S S R R R S S S S S S
6 Hour QPF 0.19 0.02 0.01 0.23 0.17 0.04 0.03 0.03
12 Hour QPF 0.21 0.24 0.21 0.06
Low End QPF 0.00 0.08 0.00 0.00
High End QPF 0.32 0.46 0.25 0.14
6 Hour Snow 0.6 0.1 0.1 2.3 0.6 0.0 0.0 0.0
12 Hour Snow 0.7 2.4 0.6 0.0
Low End Snow 0.0 0.3 0.0 0.0
High End Snow 2.1 3.0 0.7 0.1
Snow Level (kft) 7.2 6.7 5.7 4.7 4.1 4.1 4.2 4.6 6.0 7.5 8.3 8.3 8.2 8.0 7.8 7.7 7.3
Snow Density (%) 20 16 10 10 9 9 9 10 20 25 25 25 20 25 20 20 16
...Big Belt Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 75 75 85 85 85 70 85 95 95 90 80 75 85 90 90 90 90
Temperature 38 37 35 33 31 30 30 30 33 36 40 42 40 40 41 41 39
Max/Min Temp 38 29 42 36
Wind Dir SW W W W W W SW S SW SW SW W W SW SW SW SW
Wind (mph) 33 32 24 21 14 11 10 12 17 19 19 20 19 20 19 18 17
Wind Gust (mph) 87 77 55 48 35 39 46 47 44 42 44 44 42 40
Precip Prob (%) 60 40 20 5 0 10 20 80 80 80 50 50 70 70 70 70 80
Precip Type S S S S S S S S R R S R R R S
6 Hour QPF 0.06 0.00 0.02 0.16 0.07 0.02 0.02 0.08
12 Hour QPF 0.06 0.18 0.09 0.10
Low End QPF 0.01 0.06 0.00 0.00
High End QPF 0.16 0.32 0.16 0.25
6 Hour Snow 0.1 0.0 0.2 1.6 0.4 0.0 0.0 0.0
12 Hour Snow 0.1 1.8 0.4 0.0
Low End Snow 0.0 0.2 0.0 0.0
High End Snow 0.9 2.1 0.4 0.5
Snow Level (kft) 6.8 6.3 5.1 4.3 3.9 3.7 3.6 3.7 4.9 6.6 8.0 7.6 7.3 7.4 7.1 6.8 6.3
Snow Density (%) 25 20 12 11 11 11 11 11 20 25 33 25 25 25 20 20 14
...Little Belt Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV SC BK OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 75 85 90 80 45 50 75 90 95 90 85 85 90 85 90 90 90
Temperature 38 37 34 31 28 27 26 27 31 34 39 40 39 38 39 38 36
Max/Min Temp 39 24 41 33
Wind Dir W W W W W W SW SW SW SW SW W W W W W W
Wind (mph) 35 34 24 20 16 12 8 9 13 18 20 20 20 21 19 17 16
Wind Gust (mph) 87 86 51 44 37 31 37 48 48 46 46 49 44 42 39
Precip Prob (%) 30 60 30 10 0 5 5 60 90 90 50 50 70 70 80 80 80
Precip Type S S S S S S S S S S S S S
6 Hour QPF 0.07 0.02 0.00 0.12 0.13 0.02 0.09 0.19
12 Hour QPF 0.09 0.12 0.15 0.28
Low End QPF 0.02 0.05 0.01 0.00
High End QPF 0.24 0.31 0.34 0.58
6 Hour Snow 0.3 0.1 0.0 1.4 0.6 0.0 0.1 0.3
12 Hour Snow 0.4 1.4 0.6 0.4
Low End Snow 0.1 0.3 0.0 0.0
High End Snow 2.2 1.8 0.8 2.4
Snow Level (kft) 6.8 6.3 4.9 3.9 3.4 3.3 3.2 3.4 4.7 6.1 7.6 7.1 6.7 6.9 6.8 6.5 5.8
Snow Density (%) 20 16 9 9 8 8 9 9 14 16 25 20 16 20 16 14 12
...Highwood Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV SC BK OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 75 90 90 85 45 50 75 85 90 90 85 85 90 90 85 90 90
Temperature 40 38 35 32 30 29 29 30 31 36 41 43 42 41 40 38 35
Max/Min Temp 41 28 43 29
Wind Dir W W W W W W W SW SW SW W W W W W W W
Wind (mph) 44 42 24 23 18 16 11 10 12 19 25 24 24 25 21 20 20
Wind Gust (mph) 87 86 41 42 41 41
Precip Prob (%) 20 50 30 10 0 0 5 40 80 80 40 40 60 60 70 70 80
Precip Type S S S S S S R S R S S S S
6 Hour QPF 0.08 0.02 0.00 0.08 0.08 0.01 0.19 0.29
12 Hour QPF 0.10 0.08 0.09 0.48
Low End QPF 0.00 0.03 0.01 0.00
High End QPF 0.28 0.22 0.26 0.78
6 Hour Snow 0.1 0.1 0.0 0.7 0.2 0.0 0.0 0.3
12 Hour Snow 0.2 0.7 0.2 0.3
Low End Snow 0.0 0.1 0.0 0.0
High End Snow 1.8 1.0 0.2 4.8
Snow Level (kft) 6.5 5.8 4.0 3.4 3.2 3.0 3.0 2.9 3.8 5.5 7.1 6.5 6.2 6.3 5.9 5.1 4.2
Snow Density (%) 25 20 10 10 10 10 11 11 16 20 33 25 20 20 14 14 10
...Snowy/Judith Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV BK SC FW BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 80 85 90 70 30 25 55 95 95 95 85 80 85 90 90 95 90
Temperature 42 40 37 32 30 28 28 28 30 32 39 43 41 40 39 37 35
Max/Min Temp 42 24 43 30
Wind Dir W W NW NW NW NW W SW S S SW W W W W W W
Wind (mph) 31 32 23 19 16 13 8 6 10 14 14 17 19 19 16 16 14
Wind Gust (mph) 81 81 49 39 36 34 32 33 36 42 44 40 37 37
Precip Prob (%) 10 30 40 20 0 0 0 10 90 90 50 50 60 60 60 60 80
Precip Type S S S S S S R S R R R S S
6 Hour QPF 0.08 0.02 0.00 0.05 0.23 0.07 0.19 0.25
12 Hour QPF 0.10 0.05 0.30 0.44
Low End QPF 0.01 0.04 0.04 0.00
High End QPF 0.22 0.31 0.41 0.62
6 Hour Snow 0.1 0.1 0.0 0.6 1.4 0.0 0.1 0.4
12 Hour Snow 0.2 0.6 1.4 0.5
Low End Snow 0.0 0.2 0.0 0.0
High End Snow 1.5 1.5 1.7 3.2
Snow Level (kft) 7.0 6.3 4.6 3.6 3.1 2.8 2.8 2.8 3.4 4.4 6.7 6.5 6.3 6.5 6.1 5.8 5.1
Snow Density (%) 33 25 11 11 9 10 10 11 12 16 33 25 25 25 14 14 11
...Bears Paw Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV SC SC FW SC OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 85 90 85 50 30 25 45 80 95 95 80 80 85 85 85 90 90
Temperature 40 36 34 32 29 26 25 25 27 28 34 39 38 35 33 31 27
Max/Min Temp 40 23 40 20
Wind Dir W NW NW W W NW NW W S S S W W W W W W
Wind (mph) 39 36 18 17 13 9 4 5 9 11 11 13 14 13 12 13 14
Wind Gust (mph) 87 75 36
Precip Prob (%) 40 60 20 10 5 0 0 5 90 90 50 50 50 50 60 60 70
Precip Type R S S S S S S R S S S S S
6 Hour QPF 0.14 0.01 0.00 0.01 0.18 0.05 0.16 0.20
12 Hour QPF 0.15 0.01 0.23 0.36
Low End QPF 0.02 0.01 0.01 0.04
High End QPF 0.23 0.23 0.44 0.72
6 Hour Snow 0.1 0.0 0.0 0.1 2.0 0.0 0.3 1.9
12 Hour Snow 0.1 0.1 2.0 2.2
Low End Snow 0.0 0.1 0.0 0.0
High End Snow 1.6 1.3 2.3 5.2
Snow Level (kft) 6.3 4.7 3.1 2.7 2.6 2.3 2.0 1.9 2.2 2.8 5.1 5.4 5.2 4.8 4.1 3.5 3.1
Snow Density (%) 25 20 9 9 9 9 10 10 10 11 20 20 16 16 11 10 8
...Castle/Crazy Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV BK BK BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 85 90 90 85 65 50 65 85 95 95 85 85 90 90 90 90 90
Temperature 37 36 35 32 29 27 27 28 31 34 38 40 39 39 39 39 38
Max/Min Temp 38 26 40 36
Wind Dir W W W W W W SW SW SW SW SW W W W W W W
Wind (mph) 34 35 31 28 20 14 10 10 13 18 21 24 23 25 23 21 20
Wind Gust (mph) 86 86 70 62 51 40 32 50 58 57 58 63 62 61 57
Precip Prob (%) 60 50 20 5 0 10 5 60 80 80 30 30 60 60 70 70 70
Precip Type S S S S S S S S S S S S S
6 Hour QPF 0.08 0.01 0.01 0.14 0.13 0.02 0.06 0.12
12 Hour QPF 0.09 0.15 0.15 0.18
Low End QPF 0.02 0.07 0.00 0.00
High End QPF 0.20 0.34 0.21 0.34
6 Hour Snow 0.2 0.1 0.1 1.6 0.8 0.0 0.0 0.0
12 Hour Snow 0.3 1.7 0.8 0.0
Low End Snow 0.1 0.4 0.0 0.0
High End Snow 1.5 2.4 1.0 1.1
Snow Level (kft) 7.0 6.6 5.6 4.5 3.9 3.6 3.5 4.1 5.3 6.4 7.7 7.4 7.2 7.4 7.3 7.1 6.8
Snow Density (%) 20 16 10 10 8 8 9 9 14 16 25 25 20 20 20 16 14
...Bridger Range...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV OV BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 90 85 90 90 90 75 65 90 95 90 85 80 80 90 90 90 95
Temperature 38 37 35 33 31 29 29 29 33 35 39 41 40 40 41 41 40
Max/Min Temp 38 28 42 38
Wind Dir W W W W W W W SW SW SW SW W W W W W W
Wind (mph) 27 28 23 20 14 10 6 9 12 16 18 19 18 20 19 18 16
Wind Gust (mph) 66 65 52 46 34 32 43 47 46 43 50 49 47 42
Precip Prob (%) 60 40 30 5 0 20 20 80 80 80 30 30 60 60 60 60 70
Precip Type S S S S S S S S R S S S S S S
6 Hour QPF 0.04 0.02 0.03 0.18 0.08 0.01 0.01 0.04
12 Hour QPF 0.06 0.21 0.09 0.05
Low End QPF 0.01 0.06 0.00 0.00
High End QPF 0.18 0.32 0.12 0.18
6 Hour Snow 0.1 0.1 0.3 1.7 0.4 0.0 0.0 0.0
12 Hour Snow 0.2 2.0 0.4 0.0
Low End Snow 0.0 0.3 0.0 0.0
High End Snow 0.8 2.5 0.4 0.2
Snow Level (kft) 7.1 6.9 6.1 4.9 4.2 4.0 4.1 4.6 5.9 7.0 7.9 7.8 7.6 7.7 7.5 7.4 7.2
Snow Density (%) 25 20 12 12 10 10 10 10 16 20 33 25 25 25 25 25 16
...Madison Range/Spanish Peaks...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 90 90 85 85 90 90 80 90 95 85 85 85 90 90 85 80 85
Temperature 32 32 32 31 28 27 26 28 32 33 35 36 35 36 36 36 35
Max/Min Temp 34 25 37 33
Wind Dir SW SW W W W SW SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 25 24 18 16 10 9 9 13 16 17 17 18 18 19 18 17 16
Wind Gust (mph) 67 61 46 39 33 40 46 46 46 43 49 46 43 40
Precip Prob (%) 70 40 50 50 30 40 50 80 70 70 30 30 50 50 50 50 50
Precip Type S S S S S S S S S S S S S S S S S
6 Hour QPF 0.09 0.05 0.05 0.19 0.09 0.01 0.00 0.00
12 Hour QPF 0.14 0.24 0.10 0.00
Low End QPF 0.05 0.07 0.00 0.00
High End QPF 0.24 0.31 0.13 0.04
6 Hour Snow 0.7 0.5 0.7 2.2 0.7 0.0 0.0 0.0
12 Hour Snow 1.2 2.9 0.7 0.0
Low End Snow 0.5 0.4 0.0 0.0
High End Snow 2.5 3.5 0.9 0.2
Snow Level (kft) 7.3 7.3 7.1 6.2 5.3 5.0 5.3 6.3 7.2 8.0 8.4 8.4 8.2 8.3 8.1 7.9 7.7
Snow Density (%) 12 12 10 9 8 7 8 10 14 16 20 20 16 20 16 16 14
...Gallatin Range/Hyalite Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV BK BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 90 90 85 90 90 70 65 95 95 90 80 85 85 95 90 90 90
Temperature 35 35 35 32 29 27 25 27 32 34 37 38 37 38 37 37 36
Max/Min Temp 37 24 39 34
Wind Dir SW W W W W W SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 26 25 19 17 12 10 9 11 14 17 17 18 18 19 17 17 14
Wind Gust (mph) 64 62 48 41 28 35 41 43 44 41 47 42 40 35
Precip Prob (%) 70 40 40 50 30 30 30 80 80 80 30 30 60 60 60 60 60
Precip Type S S S S S S S S S S S S S S S S S
6 Hour QPF 0.03 0.05 0.06 0.13 0.05 0.01 0.01 0.02
12 Hour QPF 0.08 0.19 0.06 0.03
Low End QPF 0.03 0.06 0.00 0.00
High End QPF 0.20 0.27 0.09 0.10
6 Hour Snow 0.2 0.4 0.7 1.5 0.5 0.0 0.0 0.1
12 Hour Snow 0.6 2.2 0.5 0.1
Low End Snow 0.2 0.3 0.0 0.0
High End Snow 2.0 2.7 0.5 0.3
Snow Level (kft) 7.6 7.5 7.1 6.0 5.0 4.7 4.9 6.1 7.2 8.0 8.4 8.3 8.1 8.2 8.0 7.9 7.7
Snow Density (%) 16 14 10 9 8 7 8 10 16 16 20 20 20 20 20 20 16
...Lionhead Range...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 95 95 90 85 90 90 90 95 95 95 90 85 90 95 85 80 90
Temperature 30 31 33 33 32 30 29 29 31 33 34 36 35 36 35 35 33
Max/Min Temp 34 26 36 31
Wind Dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 23 21 16 12 9 8 9 13 17 18 14 16 16 19 19 18 17
Wind Gust (mph) 41 44 34 36 37 37
Precip Prob (%) 90 50 80 70 50 50 60 90 90 90 70 70 60 60 60 60 60
Precip Type S S S S S S S S S S S R S S S S S
6 Hour QPF 0.18 0.09 0.06 0.19 0.11 0.04 0.01 0.01
12 Hour QPF 0.27 0.25 0.15 0.02
Low End QPF 0.06 0.08 0.00 0.00
High End QPF 0.35 0.31 0.19 0.06
6 Hour Snow 1.4 0.6 0.7 1.9 0.6 0.0 0.0 0.0
12 Hour Snow 2.0 2.6 0.6 0.0
Low End Snow 0.6 0.4 0.0 0.0
High End Snow 3.4 3.0 0.8 0.3
Snow Level (kft) 6.0 6.2 6.5 6.5 6.0 5.6 5.7 6.1 6.9 7.5 8.0 8.4 8.5 8.4 8.1 7.9 7.6
Snow Density (%) 11 11 12 11 10 10 10 10 16 16 25 25 25 25 25 25 16
...Tobacco Root Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV BK BK OV OV OV OV OV OV BK OV OV OV OV OV OV
Cloud Cover (%) 85 75 70 60 70 90 90 90 85 80 70 70 80 80 80 80 80
Temperature 35 34 33 32 29 28 28 30 33 35 38 39 38 38 38 38 37
Max/Min Temp 35 27 40 36
Wind Dir SW W W W W SW SW SW SW SW SW W SW SW SW SW SW
Wind (mph) 31 29 23 20 12 10 9 14 19 21 23 24 23 25 23 21 19
Wind Gust (mph) 73 70 50 42 33 43 49 50 50 48 54 52 49 43
Precip Prob (%) 50 40 30 10 5 10 70 60 60 60 20 20 40 40 50 50 50
Precip Type S S S S S S S S S S S S S S S S
6 Hour QPF 0.07 0.02 0.03 0.17 0.06 0.01 0.00 0.00
12 Hour QPF 0.09 0.20 0.07 0.00
Low End QPF 0.00 0.05 0.00 0.00
High End QPF 0.21 0.35 0.08 0.02
6 Hour Snow 0.5 0.2 0.4 1.8 0.5 0.0 0.0 0.0
12 Hour Snow 0.7 2.2 0.5 0.0
Low End Snow 0.0 0.2 0.0 0.0
High End Snow 2.0 2.6 0.6 0.1
Snow Level (kft) 7.5 7.3 6.8 5.5 4.7 4.8 5.1 6.0 7.0 8.0 8.5 8.5 8.3 8.2 8.1 8.0 7.7
Snow Density (%) 16 14 10 10 9 8 10 11 16 20 25 20 20 20 20 20 16
...Snowcrest/Gravelly/Ruby/Blacktail Ranges...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 85 85 75 75 85 90 85 90 80 85 80 80 85 90 80 75 80
Temperature 33 33 35 35 30 29 29 30 34 35 38 40 37 37 37 36 36
Max/Min Temp 37 28 40 34
Wind Dir SW SW W NW W SW S SW SW SW SW SW SW SW SW SW SW
Wind (mph) 21 21 18 17 10 9 10 12 14 16 16 18 17 18 17 16 14
Wind Gust (mph) 62 56 41 35 29 35 39 40 41 37 41 39 35 33
Precip Prob (%) 50 50 40 30 20 20 60 60 50 50 20 20 30 30 30 30 30
Precip Type S S S S S S S S S S S S S S S S S
6 Hour QPF 0.02 0.02 0.02 0.07 0.02 0.00 0.00 0.00
12 Hour QPF 0.04 0.09 0.02 0.00
Low End QPF 0.01 0.02 0.00 0.00
High End QPF 0.13 0.16 0.03 0.01
6 Hour Snow 0.1 0.2 0.3 0.7 0.1 0.0 0.0 0.0
12 Hour Snow 0.3 1.0 0.1 0.0
Low End Snow 0.1 0.1 0.0 0.0
High End Snow 1.1 1.1 0.1 0.0
Snow Level (kft) 7.1 7.3 7.2 6.4 5.6 5.4 5.8 6.5 7.5 8.3 8.7 8.6 8.4 8.4 8.3 8.1 7.8
Snow Density (%) 16 16 12 11 9 9 11 12 20 25 25 25 25 25 25 25 20
...Centennial Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 90 90 85 80 80 85 85 90 85 85 85 85 90 90 85 80 80
Temperature 29 30 32 33 30 29 28 29 31 31 33 35 34 34 34 34 33
Max/Min Temp 34 27 35 31
Wind Dir SW SW W W NW W S SW SW SW S SW SW SW SW SW SW
Wind (mph) 17 14 12 12 9 8 8 10 11 12 12 12 11 13 13 12 12
Wind Gust (mph) 44 39
Precip Prob (%) 70 50 50 50 20 20 60 50 60 60 40 40 40 40 40 40 40
Precip Type S S S S S S S S S S S S S S S S S
6 Hour QPF 0.05 0.03 0.03 0.10 0.02 0.01 0.00 0.00
12 Hour QPF 0.08 0.13 0.03 0.00
Low End QPF 0.01 0.03 0.00 0.00
High End QPF 0.14 0.17 0.04 0.01
6 Hour Snow 0.4 0.2 0.3 1.0 0.2 0.0 0.0 0.0
12 Hour Snow 0.6 1.3 0.2 0.0
Low End Snow 0.1 0.1 0.0 0.0
High End Snow 1.2 1.6 0.3 0.0
Snow Level (kft) 6.2 6.5 7.0 6.7 5.9 5.6 5.8 6.3 7.1 7.8 8.3 8.6 8.5 8.4 8.2 7.9 7.6
Snow Density (%) 14 14 12 11 10 10 10 12 20 20 25 25 25 25 25 25 20
...Anaconda/Highland Ranges...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 90 85 75 70 80 85 95 95 95 90 80 85 85 85 80 80 85
Temperature 34 34 33 31 28 28 28 30 34 35 37 38 37 38 37 37 37
Max/Min Temp 35 27 39 35
Wind Dir SW W W W W SW SW SW SW SW SW W SW SW SW SW W
Wind (mph) 24 24 16 13 8 6 8 11 14 14 14 16 14 17 17 16 14
Wind Gust (mph) 52 46 37 33 29 35 40 37 37 37 41 41 39 37
Precip Prob (%) 90 90 60 30 20 30 80 90 100 100 80 80 80 80 80 80 70
Precip Type S S S S S S S S S S S S S R R S S
6 Hour QPF 0.25 0.05 0.08 0.32 0.23 0.15 0.10 0.09
12 Hour QPF 0.30 0.40 0.38 0.19
Low End QPF 0.10 0.18 0.02 0.00
High End QPF 0.48 0.60 0.46 0.26
6 Hour Snow 1.5 0.5 0.9 2.8 0.5 0.0 0.0 0.0
12 Hour Snow 2.0 3.7 0.5 0.0
Low End Snow 0.8 0.4 0.0 0.0
High End Snow 4.3 4.5 0.6 0.4
Snow Level (kft) 7.3 7.0 6.1 5.2 4.8 4.8 5.1 5.9 7.1 7.9 8.4 8.5 8.4 8.3 8.1 8.2 7.8
Snow Density (%) 16 14 9 9 8 9 11 12 20 25 25 20 20 20 20 20 16
...Pioneer Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 90 85 80 75 70 75 90 95 85 85 75 80 80 80 75 75 75
Temperature 34 33 32 30 27 27 27 30 34 35 36 38 36 37 37 37 36
Max/Min Temp 35 26 38 34
Wind Dir W W W W W SW SW SW W W W W W W W W W
Wind (mph) 25 25 19 17 10 9 9 13 17 19 18 19 19 21 20 19 18
Wind Gust (mph) 69 65 50 42 27 37 49 55 50 50 50 57 56 56 52
Precip Prob (%) 90 70 50 30 20 30 70 90 70 70 50 50 50 50 50 50 50
Precip Type S S S S S S S S S S S S S S S S S
6 Hour QPF 0.25 0.06 0.05 0.26 0.21 0.09 0.06 0.04
12 Hour QPF 0.31 0.31 0.30 0.10
Low End QPF 0.03 0.08 0.00 0.00
High End QPF 0.45 0.54 0.35 0.13
6 Hour Snow 1.6 0.7 0.6 2.5 0.9 0.1 0.1 0.1
12 Hour Snow 2.3 3.1 1.0 0.2
Low End Snow 0.3 0.4 0.0 0.0
High End Snow 4.6 3.7 1.2 0.4
Snow Level (kft) 7.5 7.2 6.6 5.6 5.0 5.1 5.5 6.3 7.3 8.1 8.6 8.7 8.7 8.4 8.3 8.4 8.0
Snow Density (%) 16 14 9 8 8 8 10 12 20 20 20 20 20 20 20 20 16
...Beaverhead/Tendoy Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 80 80 75 75 75 85 80 80 75 80 70 75 80 80 75 75 75
Temperature 34 33 34 33 29 28 29 31 34 35 37 39 37 36 36 35 34
Max/Min Temp 36 27 39 33
Wind Dir SW W W W W SW SW SW W SW SW W SW W W SW SW
Wind (mph) 23 21 16 14 9 8 10 12 14 16 14 17 16 17 17 16 14
Wind Gust (mph) 57 56 36 33 31 36 36 33 37 35 39 41 39 36
Precip Prob (%) 70 60 50 40 30 50 50 70 50 50 20 20 30 30 30 30 30
Precip Type S S S S S S S S S S R S S S S S S
6 Hour QPF 0.18 0.06 0.07 0.22 0.16 0.06 0.03 0.02
12 Hour QPF 0.24 0.29 0.22 0.05
Low End QPF 0.03 0.04 0.00 0.00
High End QPF 0.34 0.39 0.27 0.06
6 Hour Snow 1.0 0.5 0.8 1.7 0.4 0.1 0.0 0.0
12 Hour Snow 1.5 2.5 0.5 0.0
Low End Snow 0.3 0.1 0.0 0.0
High End Snow 2.7 3.0 0.6 0.1
Snow Level (kft) 7.6 7.5 7.2 6.4 5.7 5.8 6.3 7.0 8.0 8.5 8.8 8.8 8.7 8.4 8.3 8.2 8.0
Snow Density (%) 16 16 11 10 9 9 12 16 25 25 25 25 25 25 25 25 20
...Absoraka-Beartooth/Cooke City Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV BK BK BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 90 90 90 85 65 55 65 90 95 95 90 90 90 90 90 85 85
Temperature 27 28 29 29 24 20 19 21 26 28 31 33 32 32 33 32 31
Max/Min Temp 31 18 33 29
Wind Dir W W W W W W SW SW SW SW SW W W W W W W
Wind (mph) 26 26 23 23 17 12 9 11 14 18 19 23 21 23 20 19 17
Wind Gust (mph) 66 65 52 49 37 29 28 37 46 49 50 48 51 49 48 44
Precip Prob (%) 80 60 70 40 30 10 10 80 90 90 60 60 80 80 80 80 70
Precip Type
6 Hour QPF 0.25 0.16 0.04 0.28 0.40 0.13 0.12 0.17
12 Hour QPF 0.41 0.32 0.53 0.29
Low End QPF 0.14 0.16 0.02 0.00
High End QPF 0.52 0.65 0.54 0.44
6 Hour Snow 2.9 2.0 0.6 3.9 3.6 0.9 0.8 1.3
12 Hour Snow 4.9 4.5 4.5 2.1
Low End Snow 2.0 1.9 0.1 0.0
High End Snow 6.5 6.9 5.1 3.8
Snow Level (kft) 6.7 7.0 7.0 6.1 5.1 4.4 4.6 5.5 6.5 7.4 8.1 8.2 8.1 8.2 8.1 7.9 7.7
Snow Density (%) 8 8 7 7 6 6 7 7 10 10 12 12 12 12 12 12 10
...Absoraka Mountains Above 6000ft Northeast Facing...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV BK SC BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 80 75 80 75 70 50 60 90 95 95 80 80 80 85 85 85 85
Temperature 33 34 34 32 27 25 24 26 30 32 36 38 37 37 37 37 36
Max/Min Temp 36 23 38 33
Wind Dir W W W W W W SW SW SW SW SW W W W W W W
Wind (mph) 36 34 28 26 21 18 12 13 17 21 25 26 26 27 25 24 21
Wind Gust (mph) 86 86 69 62 54 41 29 36 49 58 63 64 64 69 64 63 59
Precip Prob (%) 70 50 60 30 20 10 5 70 90 90 50 50 70 70 80 80 70
Precip Type
6 Hour QPF 0.17 0.10 0.03 0.15 0.19 0.06 0.05 0.08
12 Hour QPF 0.27 0.18 0.25 0.13
Low End QPF 0.05 0.07 0.01 0.00
High End QPF 0.37 0.42 0.30 0.26
6 Hour Snow 1.5 0.9 0.4 1.8 1.7 0.4 0.3 0.4
12 Hour Snow 2.4 2.2 2.1 0.7
Low End Snow 0.5 0.6 0.0 0.0
High End Snow 3.7 3.4 2.3 1.5
Snow Level (kft) 7.3 7.3 7.0 6.0 4.7 4.1 4.4 5.4 6.5 7.5 8.2 8.1 8.0 8.1 8.0 7.8 7.6
Snow Density (%) 14 12 10 9 8 8 8 9 12 12 16 16 16 16 16 16 12
...Absoraka Mountains Above 6000ft West Facing...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV OV BK OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 90 90 85 85 85 70 70 90 95 90 85 85 85 90 85 85 90
Temperature 31 32 33 33 29 26 25 27 30 32 35 37 36 36 36 36 34
Max/Min Temp 35 23 37 32
Wind Dir SW SW W W W W SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 25 24 19 18 13 10 9 11 14 17 17 19 19 20 19 17 16
Wind Gust (mph) 86 86 59 55 48 40 29 37 51 56 56 57 59 69 66 62 57
Precip Prob (%) 80 50 60 50 30 20 30 80 80 80 50 50 60 60 60 60 60
Precip Type S S S S S S S S S S S S S S S S S
6 Hour QPF 0.12 0.09 0.04 0.18 0.16 0.06 0.04 0.06
12 Hour QPF 0.21 0.22 0.22 0.10
Low End QPF 0.07 0.09 0.01 0.00
High End QPF 0.32 0.41 0.26 0.21
6 Hour Snow 1.2 0.8 0.5 2.2 1.4 0.3 0.2 0.3
12 Hour Snow 2.0 2.7 1.7 0.5
Low End Snow 0.8 0.8 0.0 0.0
High End Snow 3.6 3.7 1.9 1.4
Snow Level (kft) 6.9 7.0 7.0 6.2 5.3 4.9 4.9 5.9 6.9 7.7 8.2 8.3 8.2 8.3 8.1 7.9 7.7
Snow Density (%) 11 11 10 9 8 7 8 9 12 14 16 16 16 20 16 16 14
...Crazy Mountains...
Date Tuesday 12/09/25 Wednesday 12/10/25
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover OV OV OV OV BK SC BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 80 85 80 80 65 50 60 85 95 95 80 75 80 90 90 90 90
Temperature 37 37 35 32 29 27 26 27 31 33 37 40 39 39 40 40 38
Max/Min Temp 38 25 40 36
Wind Dir W W W W W W W SW SW W W W W W W W W
Wind (mph) 44 42 35 33 24 18 11 11 16 23 26 28 28 31 28 27 25
Wind Gust (mph) 87 87 74 64 54 42 28 41 56 62 59 62 69 69 67 64
Precip Prob (%) 60 50 30 10 5 10 5 60 80 80 30 30 60 60 70 70 70
Precip Type S S S S S S S S S S R S S
6 Hour QPF 0.17 0.05 0.02 0.14 0.26 0.05 0.07 0.11
12 Hour QPF 0.22 0.16 0.31 0.18
Low End QPF 0.02 0.06 0.00 0.00
High End QPF 0.34 0.38 0.33 0.31
6 Hour Snow 0.7 0.4 0.2 1.7 1.5 0.1 0.1 0.2
12 Hour Snow 1.1 1.9 1.6 0.3
Low End Snow 0.1 0.3 0.0 0.0
High End Snow 2.9 3.0 1.8 1.3
Snow Level (kft) 7.2 6.9 6.0 4.8 4.0 3.7 3.8 4.6 5.7 6.8 7.7 7.6 7.4 7.6 7.5 7.3 7.0
Snow Density (%) 16 16 10 9 8 8 8 9 12 14 20 20 20 20 16 16 14
$$
--- Precip Type Codes ---
CODE TYPE
T Thunderstorms
R Rain
S Snow
I Sleet
Z Freezing Rain