Avalanche Weather Guidance
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
076
FWUS45 KTFX 151002
AVGTFX
Avalanche Weather Guidance
National Weather Service Great Falls MT
300 AM MST Mon Dec 15 2025
...Glacier National Park/Marias Pass...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC BK OV OV OV OV BK BK BK OV OV OV OV OV OV OV
Cloud Cover (%) 40 45 65 70 80 85 70 65 65 65 80 80 80 80 90 90 100
Temperature 37 37 37 38 38 38 36 31 29 29 30 30 30 31 30 28 32
Max/Min Temp 39 28 32 25
Wind Dir SW SW SW SW SW SW SW SW W SW SW SW SW SW SW SW SW
Wind (mph) 29 32 36 37 33 36 40 39 34 28 23 23 23 28 29 35 36
Wind Gust (mph) 66 74 85 80 69 80 85 84 73 67 48 49 48 66 70 80 87
Precip Prob (%) 0 5 50 60 70 70 50 50 50 50 70 70 70 70 90 90 100
Precip Type S S S S S S S S S S S S S S S
6 Hour QPF 0.02 0.22 0.22 0.10 0.05 0.15 0.24 0.47
12 Hour QPF 0.24 0.32 0.20 0.71
Low End QPF 0.04 0.02 0.13 0.34
High End QPF 0.38 0.41 0.54 0.93
6 Hour Snow 0.0 0.3 0.4 0.9 0.6 1.8 2.7 4.6
12 Hour Snow 0.3 1.3 2.4 7.3
Low End Snow 0.0 0.3 1.5 3.2
High End Snow 1.0 3.2 5.9 10.3
Snow Level (kft) 5.9 6.3 7.1 7.7 7.7 7.0 5.9 4.5 4.0 3.8 4.2 4.6 4.7 4.8 4.9 5.0 4.9
Snow Density (%) 50 50 50 50 25 25 11 11 8 8 8 8 10 10 11 11 10
...Bob Marshall/Scapegoat Wilderness...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC SC BK OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 40 40 40 60 80 85 80 80 75 75 85 85 80 80 90 90 100
Temperature 35 35 39 40 40 39 38 33 30 31 31 32 31 32 31 29 33
Max/Min Temp 41 30 34 26
Wind Dir W W W W SW SW SW W W W SW SW SW SW SW SW SW
Wind (mph) 18 18 27 32 29 31 33 34 32 25 19 19 18 23 24 29 33
Wind Gust (mph) 48 52 70 79 72 74 75 74 67 63 47 48 44 61 62 67 75
Precip Prob (%) 0 5 20 40 70 70 70 70 60 60 80 80 70 70 80 80 100
Precip Type S R R R S S S S S S S S S S S
6 Hour QPF 0.00 0.06 0.10 0.09 0.09 0.13 0.16 0.16
12 Hour QPF 0.06 0.19 0.22 0.32
Low End QPF 0.00 0.03 0.05 0.23
High End QPF 0.12 0.28 0.39 0.58
6 Hour Snow 0.0 0.0 0.0 0.5 1.0 1.4 1.5 1.4
12 Hour Snow 0.0 0.5 2.4 2.9
Low End Snow 0.0 0.2 0.5 2.1
High End Snow 0.1 2.8 4.1 6.6
Snow Level (kft) 5.4 5.6 6.9 8.2 8.5 7.7 6.9 5.5 5.0 4.7 4.9 5.3 5.4 5.4 5.5 5.7 5.7
Snow Density (%) 50 50 50 50 33 33 14 14 9 9 9 9 10 10 12 12 10
...Nevada Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 BK BK SC SC BK BK OV OV BK BK OV OV BK OV OV OV OV
Cloud Cover (%) 55 55 35 35 65 65 70 70 70 70 75 75 70 70 80 80 100
Temperature 35 33 37 40 40 41 40 37 34 34 35 35 34 35 35 32 37
Max/Min Temp 41 33 37 29
Wind Dir SW SW SW SW SW SW SW W W W W W SW SW SW SW SW
Wind (mph) 11 13 18 24 25 26 27 29 28 23 18 18 17 21 23 27 31
Wind Gust (mph) 29 32 43 57 58 59 56 61 55 48 37 37 35 47 49 59 65
Precip Prob (%) 0 0 5 10 50 50 60 60 50 50 60 60 50 50 70 70 100
Precip Type R R R S S S S S S S S S S
6 Hour QPF 0.00 0.01 0.02 0.08 0.04 0.04 0.08 0.03
12 Hour QPF 0.01 0.10 0.08 0.11
Low End QPF 0.00 0.02 0.00 0.06
High End QPF 0.03 0.19 0.16 0.38
6 Hour Snow 0.0 0.0 0.0 0.1 0.3 0.2 0.4 0.1
12 Hour Snow 0.0 0.1 0.5 0.5
Low End Snow 0.0 0.0 0.0 0.2
High End Snow 0.0 1.0 0.9 2.6
Snow Level (kft) 4.9 4.9 5.9 8.1 9.0 8.3 7.5 6.3 5.6 5.2 5.4 5.8 5.8 5.7 5.8 6.0 6.0
Snow Density (%) 100 100 100 100 100 100 25 25 14 14 14 14 16 16 20 20 14
...Elkhorn/Boulder Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC BK SC SC SC BK BK BK BK SC SC BK BK BK BK OV
Cloud Cover (%) 45 45 55 50 35 40 55 55 65 55 50 50 60 55 55 65 95
Temperature 34 33 38 41 39 38 38 36 33 33 36 37 34 34 34 32 35
Max/Min Temp 42 32 39 30
Wind Dir SW SW SW SW SW SW SW W W W W W SW SW SW SW SW
Wind (mph) 12 13 16 19 18 20 23 24 24 19 18 18 14 19 21 26 28
Wind Gust (mph) 31 33 42 46 42 48 52 55 52 49 43 41 34 44 50 61 67
Precip Prob (%) 0 0 5 5 20 20 20 20 30 30 20 20 20 20 30 30 100
Precip Type R R S S S S S S S S S S S
6 Hour QPF 0.00 0.00 0.00 0.02 0.02 0.01 0.01 0.01
12 Hour QPF 0.00 0.02 0.03 0.02
Low End QPF 0.00 0.00 0.00 0.01
High End QPF 0.01 0.10 0.05 0.33
6 Hour Snow 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.1
12 Hour Snow 0.0 0.0 0.2 0.1
Low End Snow 0.0 0.0 0.0 0.1
High End Snow 0.0 0.7 0.4 3.3
Snow Level (kft) 5.2 5.3 6.2 7.7 8.8 8.6 7.9 7.1 6.4 5.7 5.9 6.2 6.1 6.0 6.1 6.3 6.3
Snow Density (%) 100 100 50 50 50 50 25 25 14 14 14 14 16 16 16 16 14
...Big Belt Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 BK BK BK BK SC SC SC BK BK SC SC SC SC SC BK BK OV
Cloud Cover (%) 55 55 60 55 45 40 50 50 50 50 45 50 45 45 60 60 95
Temperature 36 35 39 42 41 41 41 38 35 35 38 39 37 37 36 35 38
Max/Min Temp 42 35 41 33
Wind Dir SW SW SW SW SW SW SW SW W W SW W SW SW SW SW SW
Wind (mph) 14 16 18 20 21 25 26 28 28 25 20 21 18 23 24 26 28
Wind Gust (mph) 36 40 48 54 54 59 62 64 62 56 46 44 40 51 54 62 70
Precip Prob (%) 0 0 5 5 10 10 20 20 30 30 30 30 20 20 40 40 90
Precip Type S S S S S S S R S S S
6 Hour QPF 0.00 0.00 0.00 0.01 0.00 0.00 0.01 0.00
12 Hour QPF 0.00 0.01 0.00 0.01
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.00 0.04 0.04 0.27
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 0.2 0.1 1.8
Snow Level (kft) 4.9 5.0 5.6 7.3 8.6 8.4 7.7 6.7 5.9 5.3 5.4 5.9 5.9 5.7 5.8 5.9 6.0
Snow Density (%) 100 100 100 100 100 100 33 33 16 16 16 16 20 20 25 25 16
...Little Belt Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC SC SC SC SC SC SC SC FW SC SC SC SC SC BK OV
Cloud Cover (%) 40 35 45 50 40 30 35 45 30 25 35 40 45 50 50 55 90
Temperature 38 37 41 43 42 41 41 38 34 35 37 38 36 35 34 33 36
Max/Min Temp 44 33 40 32
Wind Dir SW SW SW SW SW SW SW W W W W W W SW SW SW SW
Wind (mph) 16 16 20 24 25 28 29 32 33 26 23 21 19 20 21 23 25
Wind Gust (mph) 40 40 50 56 56 59 63 63 64 56 51 46 41 48 49 54 59
Precip Prob (%) 5 0 5 5 5 5 10 10 10 10 20 20 10 10 20 20 90
Precip Type S S 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 0.02 0.04 0.19
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 0.1 0.3 1.7
Snow Level (kft) 5.3 5.4 6.3 7.8 8.6 8.5 7.8 6.8 5.8 5.1 5.3 5.8 5.7 5.6 5.7 5.9 6.0
Snow Density (%) 100 100 100 100 100 100 33 33 14 14 14 14 16 16 20 20 16
...Highwood Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 FW FW BK BK SC FW FW FW FW FW SC SC SC BK BK BK OV
Cloud Cover (%) 25 20 55 60 45 10 15 25 10 15 30 35 45 55 60 65 85
Temperature 44 45 48 49 49 47 46 41 37 37 39 40 39 39 39 38 40
Max/Min Temp 50 37 42 37
Wind Dir W SW SW SW SW SW SW W W W W W W SW SW SW SW
Wind (mph) 21 21 27 33 33 37 39 41 40 34 24 24 21 25 26 26 27
Wind Gust (mph) 48 56 55 58 65 66 62 55 41 43 50
Precip Prob (%) 5 5 5 5 0 0 0 0 5 5 20 20 10 10 20 20 80
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 0.04 0.11
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 0.1 0.5
Snow Level (kft) 6.0 6.3 7.5 8.7 9.0 8.4 7.5 6.4 5.1 4.7 4.8 5.4 5.4 5.3 5.4 5.6 5.7
Snow Density (%) 100 100 100 100 100 100 50 50 20 20 16 16 20 20 25 25 25
...Snowy/Judith Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC SC OV BK SC BK SC SC FW FW SC BK BK BK OV OV
Cloud Cover (%) 45 35 40 80 60 25 55 35 30 25 25 40 55 65 70 75 75
Temperature 41 41 45 46 46 45 45 42 37 38 40 41 37 37 36 35 39
Max/Min Temp 48 35 43 33
Wind Dir W SW SW SW SW SW SW W W W W W W SW SW SW SW
Wind (mph) 13 13 17 19 21 24 28 31 29 24 19 17 13 14 18 20 23
Wind Gust (mph) 32 41 46 48 56 61 67 62 56 50 43 32 36 41 47 55
Precip Prob (%) 0 0 5 5 0 0 0 0 5 5 10 10 10 10 10 10 60
Precip Type S S 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 0.06 0.10
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 0.1 0.5
Snow Level (kft) 6.4 6.3 7.2 8.1 8.9 8.8 8.1 7.1 6.0 5.0 5.1 5.6 5.6 5.4 5.4 5.7 5.8
Snow Density (%) 100 100 100 100 100 100 100 100 25 25 20 20 25 25 25 25 33
...Bears Paw Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC FW SC OV BK SC SC FW FW FW SC SC BK BK OV OV OV
Cloud Cover (%) 40 15 30 70 60 35 30 20 15 15 35 40 55 65 75 75 75
Temperature 38 38 43 45 45 44 44 39 34 35 37 37 35 35 34 33 36
Max/Min Temp 46 33 39 32
Wind Dir W W W W SW SW SW W W W W W SW SW SW SW SW
Wind (mph) 14 16 23 25 26 31 36 39 33 27 17 14 13 17 19 19 20
Wind Gust (mph) 44 47 48 55 65 66 59 48 34 36 36 39
Precip Prob (%) 5 0 5 10 0 0 0 0 5 5 20 20 20 20 30 30 60
Precip Type S S S 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 0.02 0.00 0.09 0.13
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 0.2 0.4
Snow Level (kft) 7.5 7.6 8.4 8.5 8.8 8.1 7.1 5.9 4.6 3.8 3.7 4.4 4.7 4.7 4.7 4.9 5.1
Snow Density (%) 100 100 100 100 100 100 50 50 16 16 14 14 20 20 25 25 25
...Castle/Crazy Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC FW SC SC SC SC SC BK BK SC FW SC SC BK SC BK OV
Cloud Cover (%) 25 20 40 45 35 25 45 55 50 35 25 40 45 50 50 60 90
Temperature 34 34 39 41 41 40 40 38 35 35 37 39 36 35 35 33 36
Max/Min Temp 42 35 40 32
Wind Dir SW SW SW SW SW SW SW SW W W W W W SW SW SW SW
Wind (mph) 14 16 19 25 26 28 28 31 31 27 25 25 23 23 24 26 27
Wind Gust (mph) 43 44 50 61 59 66 70 73 72 70 70 63 54 56 63 67 73
Precip Prob (%) 0 0 0 0 5 5 10 10 20 20 10 10 5 5 10 10 90
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 0.05 0.04 0.25
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 0.3 0.2 2.1
Snow Level (kft) 4.9 4.9 5.5 6.8 7.8 8.2 7.9 7.0 6.4 5.6 5.6 6.1 6.0 5.9 5.9 6.2 6.3
Snow Density (%) 100 100 100 100 100 100 33 33 16 16 14 14 16 16 20 20 16
...Bridger Range...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC FW BK SC SC BK BK BK SC SC SC BK BK BK BK OV
Cloud Cover (%) 40 30 25 55 30 35 60 65 70 45 35 45 50 55 55 70 95
Temperature 34 34 40 42 41 40 41 38 36 36 38 40 38 37 36 35 37
Max/Min Temp 43 35 42 33
Wind Dir SW SW SW SW SW SW SW SW W W W W W SW SW SW SW
Wind (mph) 10 11 13 18 19 21 23 24 24 20 19 20 19 19 21 24 25
Wind Gust (mph) 36 42 43 47 46 50 48 50 47 47 42 46 51 59 62
Precip Prob (%) 0 0 0 5 5 5 10 10 20 20 10 10 5 5 20 20 100
Precip Type S S S S S S S
6 Hour QPF 0.00 0.00 0.00 0.01 0.01 0.00 0.00 0.00
12 Hour QPF 0.00 0.01 0.01 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.00 0.12 0.05 0.27
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 0.5 0.2 2.0
Snow Level (kft) 5.2 5.2 5.6 6.6 7.7 8.4 8.2 7.3 6.7 6.1 5.9 6.4 6.3 6.1 6.2 6.4 6.5
Snow Density (%) 100 100 100 100 100 100 33 33 20 20 20 20 20 20 20 20 20
...Madison Range/Spanish Peaks...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC FW SC BK BK SC BK BK BK BK BK SC BK BK BK OV OV
Cloud Cover (%) 30 25 35 65 55 50 60 60 70 60 50 50 65 65 70 75 100
Temperature 27 27 33 35 33 31 31 30 28 28 32 33 30 30 30 29 31
Max/Min Temp 36 27 34 28
Wind Dir S S SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 12 13 14 16 16 17 19 19 18 16 16 17 16 20 21 25 26
Wind Gust (mph) 32 36 41 44 43 47 50 51 48 44 42 43 41 48 52 61 66
Precip Prob (%) 0 0 0 5 10 10 20 20 30 30 10 10 5 5 30 30 100
Precip Type S S S S S S S S S S S
6 Hour QPF 0.00 0.00 0.00 0.01 0.02 0.00 0.00 0.01
12 Hour QPF 0.00 0.01 0.02 0.01
Low End QPF 0.00 0.00 0.00 0.01
High End QPF 0.00 0.05 0.03 0.34
6 Hour Snow 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.1
12 Hour Snow 0.0 0.0 0.1 0.1
Low End Snow 0.0 0.0 0.0 0.1
High End Snow 0.0 0.6 0.3 3.9
Snow Level (kft) 5.2 5.1 5.7 6.5 6.8 7.1 7.1 6.8 6.5 6.3 6.5 6.7 6.7 6.6 6.7 6.8 7.0
Snow Density (%) 33 33 33 33 25 25 16 16 11 11 11 11 11 11 11 11 11
...Gallatin Range/Hyalite Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC SC OV SC SC BK BK OV BK SC SC BK BK BK OV OV
Cloud Cover (%) 30 25 30 75 45 45 60 60 70 60 45 45 65 60 65 70 100
Temperature 28 28 36 38 36 33 33 32 31 31 34 36 33 32 31 30 33
Max/Min Temp 40 30 37 29
Wind Dir S S SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 13 14 16 17 17 18 20 20 19 17 17 18 18 20 19 21 24
Wind Gust (mph) 33 37 39 35 36 42 46 43 41 39 40 39 41 46 50 56
Precip Prob (%) 0 0 0 5 10 10 10 10 30 30 10 10 5 5 20 20 100
Precip Type S S S S S S S S S
6 Hour QPF 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.01 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.00 0.06 0.02 0.27
6 Hour Snow 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.1 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.5 0.1 2.9
Snow Level (kft) 5.3 5.2 6.1 6.9 7.4 7.7 7.5 7.2 6.9 6.6 6.7 6.7 6.6 6.5 6.6 6.8 7.0
Snow Density (%) 50 50 50 50 33 33 25 25 12 12 12 12 12 12 12 12 12
...Lionhead Range...
Date Monday 12/15/25 Tuesday 12/16/25
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 FW SC FW SC OV SC BK BK OV OV BK OV OV OV OV OV OV
Cloud Cover (%) 25 30 20 50 70 50 55 60 80 80 70 70 75 85 85 85 100
Temperature 19 19 31 34 31 29 29 28 26 27 31 32 32 31 31 30 31
Max/Min Temp 35 25 34 29
Wind Dir S S SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 4 4 9 12 11 12 14 14 14 13 11 13 13 18 21 24 26
Wind Gust (mph) 27 32 33 32 36 41 46 51
Precip Prob (%) 0 0 0 5 20 20 30 30 40 40 50 50 20 20 60 60 100
Precip Type S S S S S S S S S S S S S
6 Hour QPF 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.07
12 Hour QPF 0.00 0.00 0.02 0.08
Low End QPF 0.00 0.00 0.00 0.06
High End QPF 0.00 0.07 0.09 0.65
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.6
12 Hour Snow 0.0 0.0 0.1 0.6
Low End Snow 0.0 0.0 0.0 0.5
High End Snow 0.0 0.7 0.8 6.3
Snow Level (kft) 4.6 4.4 4.9 5.3 5.0 5.0 5.1 5.3 5.7 5.8 6.3 6.8 7.1 7.0 7.0 7.0 7.2
Snow Density (%) 33 33 33 33 25 25 16 16 12 12 12 12 14 14 12 12 14
...Tobacco Root Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC BK OV SC SC BK BK BK BK SC SC BK BK BK BK OV
Cloud Cover (%) 35 30 50 75 50 40 65 60 65 55 50 40 55 55 60 65 95
Temperature 32 33 37 38 37 36 37 35 33 33 35 36 34 33 32 31 34
Max/Min Temp 39 32 38 29
Wind Dir SW SW SW SW SW SW SW SW W SW SW SW SW SW SW SW SW
Wind (mph) 13 16 20 23 21 25 26 26 24 20 20 24 21 26 27 31 32
Wind Gust (mph) 32 34 48 50 47 49 54 55 50 46 44 48 46 55 59 66 69
Precip Prob (%) 0 0 0 5 20 20 20 20 20 20 10 10 5 5 20 20 100
Precip Type S S S S S S S S S
6 Hour QPF 0.00 0.00 0.00 0.02 0.04 0.00 0.00 0.00
12 Hour QPF 0.00 0.02 0.04 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.00 0.18 0.07 0.34
6 Hour Snow 0.0 0.0 0.0 0.1 0.3 0.0 0.0 0.0
12 Hour Snow 0.0 0.1 0.3 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 1.5 0.6 3.7
Snow Level (kft) 5.4 5.3 5.9 6.9 7.7 8.1 8.1 7.6 7.2 6.8 6.6 6.6 6.5 6.4 6.5 6.6 6.7
Snow Density (%) 50 50 50 50 33 33 25 25 14 14 12 12 14 14 14 14 12
...Snowcrest/Gravelly/Ruby/Blacktail Ranges...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC SC OV BK SC BK BK BK BK SC SC BK BK OV OV OV
Cloud Cover (%) 30 25 35 75 60 45 65 55 60 55 40 40 50 60 70 70 95
Temperature 28 27 34 37 34 32 32 31 29 30 35 37 32 31 31 30 32
Max/Min Temp 38 29 38 29
Wind Dir S S S SW S S S S SW SW SW SW SW S S S S
Wind (mph) 12 14 16 16 14 17 18 17 17 16 16 18 14 18 21 25 26
Wind Gust (mph) 31 34 34 35 33 36 41 42 41 39 34 37 34 42 46 54 61
Precip Prob (%) 0 0 0 5 10 10 10 10 10 10 5 5 5 5 20 20 90
Precip Type S S S S S
6 Hour QPF 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.01 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.00 0.04 0.02 0.28
6 Hour Snow 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.1 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.2 0.1 3.0
Snow Level (kft) 5.2 5.0 5.4 6.3 6.7 7.2 7.2 6.7 6.6 6.4 6.6 6.7 6.8 6.6 6.7 6.8 7.0
Snow Density (%) 50 50 50 50 33 33 25 25 14 14 14 14 14 14 14 14 14
...Centennial Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 FW FW FW BK OV BK BK BK BK BK BK SC BK OV OV OV OV
Cloud Cover (%) 25 20 20 65 70 55 70 60 60 60 50 50 55 70 85 85 100
Temperature 24 23 30 32 30 28 28 26 25 24 29 31 28 27 29 28 30
Max/Min Temp 33 24 32 27
Wind Dir S S S S S S S S S S S S S S S S S
Wind (mph) 6 8 10 11 10 11 12 11 11 10 10 12 11 14 19 24 26
Wind Gust (mph) 32 37 43 50
Precip Prob (%) 0 0 0 5 20 20 20 20 20 20 20 20 10 10 40 40 100
Precip Type S S S S S S S S S S S S S
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03
12 Hour QPF 0.00 0.00 0.00 0.03
Low End QPF 0.00 0.00 0.00 0.02
High End QPF 0.00 0.02 0.04 0.42
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2
12 Hour Snow 0.0 0.0 0.0 0.2
Low End Snow 0.0 0.0 0.0 0.2
High End Snow 0.0 0.2 0.4 4.0
Snow Level (kft) 4.8 4.6 4.8 5.3 5.2 5.2 5.3 5.2 5.3 5.3 5.8 6.6 6.9 6.7 6.7 6.8 7.0
Snow Density (%) 50 50 33 33 25 25 20 20 12 12 12 12 14 14 12 12 12
...Anaconda/Highland Ranges...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC OV OV BK BK BK BK OV BK BK BK BK BK OV OV OV
Cloud Cover (%) 45 45 70 75 70 65 70 65 75 70 65 60 65 70 70 75 100
Temperature 29 29 34 37 36 34 35 34 32 32 34 35 33 32 31 29 33
Max/Min Temp 38 31 37 27
Wind Dir SW SW SW SW SW SW SW W W W SW SW SW SW SW SW SW
Wind (mph) 8 9 12 12 12 14 18 18 17 14 13 16 13 18 19 25 27
Wind Gust (mph) 33 34 34 39 43 46 41 39 34 36 32 41 46 59 65
Precip Prob (%) 0 0 10 30 70 70 70 70 70 70 60 60 30 30 70 70 100
Precip Type S S R S S S S S S S S S S S S
6 Hour QPF 0.00 0.02 0.03 0.06 0.06 0.02 0.01 0.05
12 Hour QPF 0.02 0.09 0.08 0.06
Low End QPF 0.00 0.02 0.00 0.05
High End QPF 0.04 0.16 0.09 0.52
6 Hour Snow 0.0 0.0 0.0 0.2 0.5 0.1 0.1 0.4
12 Hour Snow 0.0 0.2 0.6 0.5
Low End Snow 0.0 0.1 0.0 0.4
High End Snow 0.1 1.4 0.8 5.6
Snow Level (kft) 5.0 5.0 5.8 7.1 8.2 8.2 7.7 7.3 6.9 6.4 6.5 6.5 6.4 6.3 6.5 6.6 6.6
Snow Density (%) 50 50 50 50 33 33 20 20 12 12 12 12 12 12 14 14 11
...Pioneer Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC SC BK BK BK OV OV OV OV BK BK BK BK BK OV OV
Cloud Cover (%) 45 45 50 60 60 60 75 70 75 70 65 65 65 65 65 70 100
Temperature 30 30 35 38 35 34 35 34 32 32 34 35 32 32 30 28 33
Max/Min Temp 39 31 36 26
Wind Dir SW SW SW SW SW SW SW W W W W SW SW SW SW SW SW
Wind (mph) 10 11 14 16 14 17 19 20 19 18 17 18 16 19 20 24 26
Wind Gust (mph) 27 29 41 48 42 48 50 52 50 49 43 46 41 52 57 67 75
Precip Prob (%) 0 0 5 10 40 40 30 30 40 40 20 20 10 10 40 40 100
Precip Type S S S S S S S S S S S S S
6 Hour QPF 0.00 0.00 0.02 0.03 0.05 0.01 0.00 0.04
12 Hour QPF 0.00 0.05 0.06 0.04
Low End QPF 0.00 0.00 0.00 0.03
High End QPF 0.02 0.14 0.08 0.43
6 Hour Snow 0.0 0.0 0.0 0.1 0.4 0.1 0.0 0.3
12 Hour Snow 0.0 0.1 0.5 0.3
Low End Snow 0.0 0.0 0.0 0.3
High End Snow 0.0 1.3 0.7 5.5
Snow Level (kft) 5.4 5.3 6.1 7.4 8.0 8.3 8.1 7.6 7.2 6.8 6.7 6.7 6.6 6.5 6.6 6.8 6.9
Snow Density (%) 50 50 33 33 33 33 20 20 12 12 12 12 12 12 12 12 11
...Beaverhead/Tendoy Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC SC BK BK BK OV OV OV BK BK BK BK BK OV BK OV
Cloud Cover (%) 45 45 45 70 65 55 70 70 70 70 50 50 55 65 70 70 95
Temperature 29 29 36 37 35 33 34 33 32 32 36 37 33 31 31 29 32
Max/Min Temp 39 31 38 27
Wind Dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 9 11 13 13 12 14 17 17 17 17 16 17 13 17 19 26 28
Wind Gust (mph) 33 36 29 37 39 42 40 41 36 37 34 46 49 64 70
Precip Prob (%) 0 0 0 5 30 30 20 20 30 30 10 10 10 10 40 40 100
Precip Type R R R S S S S S S S S S S
6 Hour QPF 0.00 0.01 0.02 0.02 0.03 0.01 0.00 0.03
12 Hour QPF 0.01 0.04 0.04 0.03
Low End QPF 0.00 0.01 0.00 0.02
High End QPF 0.02 0.12 0.05 0.39
6 Hour Snow 0.0 0.0 0.0 0.1 0.2 0.0 0.0 0.2
12 Hour Snow 0.0 0.1 0.2 0.2
Low End Snow 0.0 0.0 0.0 0.2
High End Snow 0.1 0.9 0.4 4.5
Snow Level (kft) 5.4 5.3 5.9 6.9 7.7 8.2 8.1 7.8 7.5 7.0 7.0 6.8 6.8 6.7 6.8 6.9 7.1
Snow Density (%) 50 50 33 33 33 33 25 25 14 14 12 12 14 14 12 12 12
...Absoraka-Beartooth/Cooke City Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 FW FW FW FW BK SC BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 25 25 20 15 60 40 60 70 80 75 75 75 75 80 80 80 100
Temperature 19 19 26 31 28 24 24 25 24 25 28 29 27 27 28 27 28
Max/Min Temp 32 23 30 26
Wind Dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 9 10 14 18 17 17 18 18 19 18 18 20 19 20 23 24 25
Wind Gust (mph) 26 28 37 43 42 40 43 47 50 47 46 46 42 46 51 56 61
Precip Prob (%) 0 0 0 0 5 5 20 20 40 40 30 30 10 10 40 40 100
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.01 0.04 0.01 0.02 0.06
12 Hour QPF 0.00 0.01 0.05 0.08
Low End QPF 0.00 0.00 0.01 0.06
High End QPF 0.00 0.11 0.11 0.48
6 Hour Snow 0.0 0.0 0.0 0.1 0.4 0.1 0.2 0.7
12 Hour Snow 0.0 0.1 0.5 0.9
Low End Snow 0.0 0.0 0.1 0.7
High End Snow 0.0 1.4 1.4 5.8
Snow Level (kft) 4.9 4.7 5.3 6.2 5.9 6.0 5.9 6.0 6.5 6.4 6.7 6.9 6.9 6.9 6.9 7.0 7.1
Snow Density (%) 16 16 14 14 12 12 11 11 8 8 9 9 9 9 9 9 9
...Absoraka Mountains Above 6000ft Northeast Facing...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC SC SC BK SC SC SC BK BK SC SC BK BK BK BK OV
Cloud Cover (%) 25 40 35 40 55 35 40 40 55 50 45 50 55 60 60 65 95
Temperature 31 31 36 37 35 33 33 33 31 32 34 34 31 32 32 32 34
Max/Min Temp 38 31 36 31
Wind Dir SW SW SW SW SW SW SW SW SW W W W SW SW SW SW SW
Wind (mph) 19 20 23 25 27 28 32 33 32 27 25 25 24 26 29 32 33
Wind Gust (mph) 43 46 52 56 62 59 74 78 77 77 62 58 57 71 80 86 90
Precip Prob (%) 0 0 0 0 5 5 10 10 30 30 20 20 10 10 30 30 90
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.02
12 Hour QPF 0.00 0.00 0.02 0.02
Low End QPF 0.00 0.00 0.00 0.02
High End QPF 0.00 0.06 0.06 0.28
6 Hour Snow 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.2
12 Hour Snow 0.0 0.0 0.1 0.2
Low End Snow 0.0 0.0 0.0 0.2
High End Snow 0.0 0.6 0.6 2.9
Snow Level (kft) 5.8 5.7 6.2 6.8 7.5 7.8 7.7 7.1 6.9 6.6 6.7 6.8 6.7 6.7 6.7 6.9 7.0
Snow Density (%) 33 33 33 33 33 33 25 25 12 12 12 12 12 12 12 12 12
...Absoraka Mountains Above 6000ft West Facing...
Date Monday 12/15/25 Tuesday 12/16/25
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 FW SC SC SC BK SC BK BK OV BK BK BK OV OV OV OV OV
Cloud Cover (%) 20 30 25 50 55 45 55 60 70 65 60 60 70 70 75 75 100
Temperature 23 23 32 35 33 30 29 29 28 29 32 34 31 31 31 30 32
Max/Min Temp 36 27 35 29
Wind Dir S S SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 10 11 13 16 14 16 17 18 17 16 17 18 17 19 21 23 24
Wind Gust (mph) 43 44 51 56 59 58 72 73 74 73 61 56 55 67 75 81 86
Precip Prob (%) 0 0 0 5 5 5 10 10 30 30 20 20 10 10 30 30 100
Precip Type S S S S S S S S S
6 Hour QPF 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.03
12 Hour QPF 0.00 0.00 0.02 0.03
Low End QPF 0.00 0.00 0.00 0.02
High End QPF 0.00 0.07 0.06 0.38
6 Hour Snow 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.3
12 Hour Snow 0.0 0.0 0.2 0.3
Low End Snow 0.0 0.0 0.0 0.2
High End Snow 0.0 0.8 0.6 4.2
Snow Level (kft) 4.9 4.8 5.5 6.3 6.2 6.3 6.3 6.3 6.4 6.3 6.6 6.9 6.9 6.8 6.8 7.0 7.1
Snow Density (%) 25 25 25 25 20 20 16 16 11 11 11 11 11 11 11 11 11
...Crazy Mountains...
Date Monday 12/15/25 Tuesday 12/16/25
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 SC SC SC SC SC SC SC BK BK SC SC SC SC BK BK BK OV
Cloud Cover (%) 35 30 35 35 35 35 45 55 60 45 35 40 45 55 50 65 95
Temperature 34 34 38 40 40 39 39 37 34 35 36 37 35 35 34 32 35
Max/Min Temp 41 33 39 31
Wind Dir SW SW SW W W W SW W W W W W W W SW SW SW
Wind (mph) 20 21 21 27 29 34 35 37 37 34 32 29 26 28 31 33 35
Wind Gust (mph) 47 47 51 63 65 72 80 85 82 77 72 64 58 63 69 75 84
Precip Prob (%) 0 0 0 0 5 5 10 10 20 20 10 10 10 10 20 20 90
Precip Type S S S S S
6 Hour QPF 0.00 0.00 0.00 0.02 0.01 0.00 0.00 0.00
12 Hour QPF 0.00 0.02 0.01 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.00 0.08 0.05 0.21
6 Hour Snow 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.1 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.6 0.4 2.1
Snow Level (kft) 5.4 5.3 5.9 6.9 7.9 8.3 8.0 7.3 6.7 6.1 5.9 6.4 6.2 6.0 6.1 6.3 6.5
Snow Density (%) 50 50 50 50 50 50 33 33 14 14 14 14 14 14 16 16 16
$$
--- Precip Type Codes ---
CODE TYPE
T Thunderstorms
R Rain
S Snow
I Sleet
Z Freezing Rain