Avalanche Weather Guidance
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
108
FWUS45 KTFX 131001
AVGTFX
Avalanche Weather Guidance
National Weather Service Great Falls MT
400 AM MDT Sun Sep 13 2026
...Glacier National Park/Marias Pass...
Date Sunday 09/13/26 Monday 09/14/26
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 OV OV OV BK BK OV OV OV OV OV OV BK BK OV OV OV
Cloud Cover (%) 65 80 80 90 65 60 75 75 95 70 70 80 55 70 75 75 85
Temperature 35 38 42 44 42 39 38 37 36 38 41 45 43 40 39 38 37
Max/Min Temp 45 35 45 37
Wind Dir SE SE SE SW SW SW SW SW W W W W W SW SW SW SW
Wind (mph) 10 10 6 6 12 18 20 23 21 16 13 12 11 10 8 5 4
Wind Gust (mph) 34 37 46 54 58 46 34
Precip Prob (%) 5 20 50 70 40 5 10 40 80 40 30 20 20 20 20 20 20
Precip Type R R R R S S S S S R R R R R R R
6 Hour QPF 0.01 0.09 0.02 0.03 0.04 0.01 0.00 0.00
12 Hour QPF 0.10 0.05 0.05 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.1 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.1 10.4 10.1 8.7 7.8 7.0 6.6 6.5 7.0 7.6 8.1 8.4 8.4 8.2 8.1 7.9 7.7
Snow Density (%) 0 0 100 50 33 25 20 16 20 25 33 50 50 50 50 33 33
...Bob Marshall/Scapegoat Wilderness...
Date Sunday 09/13/26 Monday 09/14/26
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 SC BK SC SC SC OV OV BK BK BK SC SC SC SC BK
Cloud Cover (%) 60 70 50 65 40 45 45 70 90 65 60 65 40 45 40 50 60
Temperature 36 39 49 51 46 40 37 36 35 37 43 46 45 40 38 36 35
Max/Min Temp 52 34 47 34
Wind Dir E E S W W W W W W W W W W W W SW SW
Wind (mph) 9 6 5 8 10 10 11 16 23 18 14 12 10 6 4 3 3
Wind Gust (mph) 32 25 27 32 36 44 63 57 42 33 28
Precip Prob (%) 0 5 20 40 10 5 10 40 50 30 10 5 0 0 0 0 0
Precip Type R R R S S S S R R
6 Hour QPF 0.00 0.02 0.01 0.02 0.02 0.00 0.00 0.00
12 Hour QPF 0.02 0.03 0.02 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.8 10.9 10.3 9.4 8.4 7.3 6.9 6.6 7.1 7.6 8.0 8.3 8.4 8.1 7.9 7.6 7.4
Snow Density (%) 0 0 0 100 50 25 20 14 16 20 25 33 50 50 50 50 50
...Nevada Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 OV SC BK SC SC SC OV OV BK BK SC FW FW FW SC SC
Cloud Cover (%) 45 70 45 60 45 45 35 70 85 60 55 50 25 20 25 35 40
Temperature 38 40 52 56 50 43 41 39 38 39 43 47 47 42 40 37 36
Max/Min Temp 57 37 49 35
Wind Dir NE E SE W W W W W W W W W W W W SW SW
Wind (mph) 8 6 4 8 11 10 10 13 23 21 18 13 10 6 4 4 3
Wind Gust (mph) 29 35 51 48 41 34
Precip Prob (%) 0 0 20 30 20 20 10 50 20 20 0 0 0 0 0 0 0
Precip Type R R R R S R R
6 Hour QPF 0.00 0.01 0.02 0.01 0.01 0.00 0.00 0.00
12 Hour QPF 0.01 0.03 0.01 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.0 11.1 10.6 10.1 9.1 7.8 7.1 6.8 7.2 7.6 8.0 8.3 8.4 8.1 7.8 7.5 7.1
Snow Density (%) 0 0 0 0 0 50 33 25 25 25 33 50 100 100 100 50 50
...Elkhorn/Boulder Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW BK BK SC SC BK BK BK BK SC FW FW FW FW SC
Cloud Cover (%) 30 50 20 55 55 45 45 65 60 60 60 40 10 10 10 25 35
Temperature 37 42 55 59 53 43 39 36 35 38 43 48 48 40 37 35 33
Max/Min Temp 60 34 49 32
Wind Dir SE SE S W NW NW W W W W W W NW NW W SW S
Wind (mph) 4 6 6 10 12 14 10 10 17 19 18 14 10 5 3 4 4
Wind Gust (mph) 27 34 37 31 42 42 41 36 27
Precip Prob (%) 0 0 5 10 30 20 10 20 5 0 0 0 0 0 0 0 0
Precip Type R R R R R
6 Hour QPF 0.00 0.00 0.07 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.07 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.2 11.4 10.6 10.6 9.8 8.5 7.5 7.1 7.2 7.8 8.3 8.5 8.7 8.3 7.8 7.5 7.0
Snow Density (%) 0 0 0 0 0 50 25 20 16 20 25 50 50 50 50 50 50
...Big Belt Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW SC BK OV BK BK OV BK BK BK SC FW FW SC SC
Cloud Cover (%) 25 40 15 30 70 75 60 65 85 65 60 60 30 20 15 25 35
Temperature 39 43 56 63 57 47 44 41 39 41 45 50 49 44 41 39 37
Max/Min Temp 63 39 51 36
Wind Dir E SE SE W NW NW W SW SW W W W NW NW S SE SE
Wind (mph) 8 8 8 8 11 11 11 11 18 21 18 14 10 5 4 4 4
Wind Gust (mph) 25 29 26 31 34 29 33 48 49 43 37 28
Precip Prob (%) 0 0 0 5 50 50 10 30 10 5 10 5 0 0 0 0 0
Precip Type R R R S S R R R
6 Hour QPF 0.00 0.00 0.08 0.01 0.01 0.00 0.00 0.00
12 Hour QPF 0.00 0.09 0.01 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.0 11.3 11.1 10.7 10.4 9.0 7.6 7.1 7.1 7.7 8.2 8.4 8.5 8.3 7.9 7.6 7.4
Snow Density (%) 0 0 0 0 0 100 50 25 25 25 33 50 100 100 100 50 100
...Little Belt Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW OV OV BK BK OV OV OV OV SC SC FW SC SC
Cloud Cover (%) 20 20 25 25 85 75 60 60 75 75 70 80 40 35 20 30 45
Temperature 37 43 56 64 58 46 42 39 37 39 42 47 46 41 39 36 35
Max/Min Temp 64 37 48 34
Wind Dir SE SE SE S W NW W W W W W W NW W SW S S
Wind (mph) 10 12 13 11 9 10 9 11 20 24 23 20 13 6 4 4 4
Wind Gust (mph) 34 40 42 34 31 29 32 50 49 51 50 39
Precip Prob (%) 0 0 0 5 70 60 30 30 10 30 50 40 5 5 0 0 0
Precip Type R R R S S R R
6 Hour QPF 0.00 0.01 0.08 0.01 0.04 0.02 0.00 0.00
12 Hour QPF 0.01 0.09 0.06 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.9 11.2 11.6 11.1 11.0 10.0 8.3 7.2 7.0 7.5 8.2 8.4 8.5 8.3 8.0 7.7 7.5
Snow Density (%) 0 0 0 0 0 100 50 25 20 20 25 50 50 50 50 50 50
...Highwood Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW SC FW OV OV BK SC BK OV OV OV SC SC SC SC SC
Cloud Cover (%) 15 20 50 10 90 80 60 35 65 80 75 80 40 45 45 40 45
Temperature 39 44 54 63 58 48 45 43 42 44 45 49 48 45 43 42 41
Max/Min Temp 63 42 50 40
Wind Dir SE SE SE SE W NW W W W W W NW NW W SW S SE
Wind (mph) 16 18 19 9 10 16 13 14 28 31 28 25 17 8 5 5 5
Wind Gust (mph) 50 50 46 43 34
Precip Prob (%) 0 0 0 0 70 60 30 10 20 40 50 50 0 0 0 0 0
Precip Type R R R R R R R
6 Hour QPF 0.00 0.00 0.14 0.01 0.04 0.02 0.00 0.00
12 Hour QPF 0.00 0.15 0.06 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.7 11.0 11.3 10.9 11.0 9.9 7.7 7.1 6.8 7.3 8.0 8.2 8.4 8.2 8.1 7.9 7.8
Snow Density (%) 0 0 0 0 0 0 50 50 33 33 33 50 100 100 100 100 100
...Snowy/Judith Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW SC SC BK BK BK BK BK BK SC SC FW SC SC
Cloud Cover (%) 20 15 25 15 35 30 55 50 50 55 50 55 45 35 20 30 40
Temperature 39 45 55 64 64 51 46 43 41 44 48 51 50 45 42 40 38
Max/Min Temp 66 40 52 36
Wind Dir SE SE SE SE SE NW NW W W W W NW NW NW W SW S
Wind (mph) 10 14 19 17 11 10 20 18 19 25 33 34 23 13 8 4 4
Wind Gust (mph) 29 39 41 40 31 28 48 46 47 51 61 61 49 39
Precip Prob (%) 0 0 0 0 20 10 30 20 10 20 10 10 5 5 0 0 0
Precip Type R R R R R R R
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 MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 10.7 11.0 11.7 11.5 11.0 10.6 9.5 7.7 7.0 7.4 8.0 8.3 8.3 8.2 8.0 7.9 7.8
Snow Density (%) 0 0 0 0 0 0 0 100 50 50 50 100 100 100 100 100 100
...Bears Paw Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW SC SC BK OV OV BK OV BK OV OV BK SC SC SC BK
Cloud Cover (%) 15 10 40 40 50 95 70 55 70 65 80 85 65 40 45 45 55
Temperature 37 45 54 60 58 49 46 43 41 44 47 49 47 42 41 39 37
Max/Min Temp 61 41 49 36
Wind Dir SE SE SE SE SE NW NW W W W W NW NW NW NW NW SE
Wind (mph) 10 16 21 19 13 8 11 14 18 21 23 21 17 11 5 3 2
Wind Gust (mph) 35 40 33 39 40 41 40 37
Precip Prob (%) 0 0 0 0 20 70 50 20 5 10 70 60 20 20 0 0 0
Precip Type R R R R R R R R R
6 Hour QPF 0.00 0.00 0.09 0.02 0.01 0.04 0.01 0.00
12 Hour QPF 0.00 0.11 0.05 0.01
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 8.3 10.1 10.9 11.4 11.0 10.8 9.3 7.1 6.7 6.9 7.8 8.1 8.0 7.8 7.7 7.5 7.3
Snow Density (%) 0 0 0 0 0 0 0 100 33 33 50 100 100 100 100 100 100
...Castle/Crazy Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW SC SC SC OV BK OV BK BK BK SC FW FW FW SC
Cloud Cover (%) 35 20 15 25 45 45 75 60 70 60 60 55 30 10 10 20 35
Temperature 38 42 53 63 61 48 43 40 38 39 43 48 47 42 39 36 35
Max/Min Temp 64 37 49 34
Wind Dir E E SE SE W W W W SW W W W NW NW SW S SE
Wind (mph) 14 16 13 12 11 12 13 14 23 28 28 25 18 8 4 4 4
Wind Gust (mph) 39 41 34 32 32 29 31 42 62 65 62 58 50
Precip Prob (%) 0 0 0 0 30 30 60 20 20 20 0 0 0 0 0 0 0
Precip Type R R S S S S
6 Hour QPF 0.00 0.00 0.01 0.02 0.01 0.00 0.00 0.00
12 Hour QPF 0.00 0.03 0.01 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.0 11.5 11.6 11.2 10.7 10.1 8.8 7.3 7.0 7.6 8.2 8.5 8.6 8.3 7.9 7.5 7.1
Snow Density (%) 0 0 0 0 0 0 50 25 20 20 25 50 50 50 50 50 50
...Bridger Range...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW SC SC OV BK BK BK BK SC SC FW FW FW SC
Cloud Cover (%) 25 15 15 15 35 35 75 55 65 50 50 50 30 5 10 15 25
Temperature 40 43 56 66 63 49 44 40 38 40 44 49 49 42 39 37 35
Max/Min Temp 66 37 50 34
Wind Dir SE SE SE SW SW NW W W SW W W W NW N E SE E
Wind (mph) 16 13 9 10 12 11 11 9 16 20 21 18 11 4 2 3 4
Wind Gust (mph) 42 40 26 32 33 31 29 43 47 46 40 32
Precip Prob (%) 0 0 0 0 10 20 60 30 10 5 0 0 0 0 0 0 0
Precip Type R R R S
6 Hour QPF 0.00 0.00 0.00 0.03 0.01 0.00 0.00 0.00
12 Hour QPF 0.00 0.03 0.01 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.2 11.7 11.4 10.9 10.3 9.8 8.5 7.5 7.1 7.7 8.4 8.6 8.7 8.5 8.1 7.6 7.2
Snow Density (%) 0 0 0 0 0 0 50 25 20 20 33 50 100 100 100 50 50
...Madison Range/Spanish Peaks...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW SC SC BK SC SC FW FW SC FW FW FW FW
Cloud Cover (%) 40 20 20 10 10 25 45 55 35 30 25 25 25 10 10 15 15
Temperature 39 46 57 60 57 47 42 36 33 35 42 48 47 39 36 34 32
Max/Min Temp 61 33 49 31
Wind Dir SE S S S SW SW W W SW SW W W NW N E SE SE
Wind (mph) 6 9 18 24 23 13 9 8 10 14 13 12 9 4 4 5 6
Wind Gust (mph) 28 46 55 51 39 28 25 35 40 34 33
Precip Prob (%) 0 0 0 0 0 0 20 30 0 0 0 0 0 0 0 0 0
Precip Type R S
6 Hour QPF 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.02 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.1 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.7 11.8 11.0 10.7 9.6 8.6 8.1 7.5 7.1 7.9 8.7 9.0 9.1 8.7 8.2 7.7 7.2
Snow Density (%) 0 0 0 0 0 100 25 14 12 12 20 33 50 50 50 50 50
...Gallatin Range/Hyalite Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW SC BK BK SC FW FW SC SC FW FW FW FW
Cloud Cover (%) 35 25 15 15 15 25 55 65 45 25 20 35 40 10 10 10 20
Temperature 40 45 61 64 60 49 42 37 34 36 44 49 48 40 37 34 33
Max/Min Temp 64 34 50 32
Wind Dir SE SE S S SW W W SW SW W W W NW NW SW S S
Wind (mph) 8 10 14 20 20 14 10 6 11 16 16 13 10 4 4 5 5
Wind Gust (mph) 35 47 44 36 27 33 35 35 32
Precip Prob (%) 0 0 0 0 5 10 40 50 5 0 0 0 0 0 0 0 0
Precip Type S S
6 Hour QPF 0.00 0.00 0.00 0.04 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.04 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.1 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.6 11.9 11.4 10.8 9.8 8.9 8.5 7.6 7.2 7.9 8.6 8.9 9.0 8.7 8.3 7.8 7.2
Snow Density (%) 0 0 0 0 0 100 25 16 14 14 25 50 50 50 50 50 50
...Lionhead Range...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW CL SC SC SC FW FW FW SC SC FW FW FW FW
Cloud Cover (%) 25 20 10 15 5 30 40 30 25 15 20 30 40 15 10 10 5
Temperature 42 50 60 63 59 48 46 38 33 36 47 52 52 42 38 34 30
Max/Min Temp 63 32 54 29
Wind Dir E S SW SW SW SW SW SW SW SW SW SW SW SW SE E E
Wind (mph) 4 9 17 18 18 10 17 16 12 13 12 10 6 3 2 2 2
Wind Gust (mph) 37 36 35
Precip Prob (%) 0 0 0 0 0 0 10 10 0 0 0 0 0 0 0 0 0
Precip Type
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 MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.9 11.8 10.7 10.9 10.1 9.0 8.1 7.4 6.7 7.6 8.6 9.1 9.3 8.9 8.6 8.1 7.6
Snow Density (%) 0 0 0 0 0 0 100 33 20 20 33 100 0 0 100 100 100
...Tobacco Root Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW SC SC SC BK SC SC SC SC SC FW FW FW FW FW
Cloud Cover (%) 40 35 20 35 35 50 60 45 35 35 35 30 15 10 10 15 20
Temperature 38 43 56 61 57 46 40 36 34 37 42 47 47 40 37 35 33
Max/Min Temp 62 34 48 32
Wind Dir S S SW SW SW W W SW SW SW W W NW N E S S
Wind (mph) 6 6 10 19 18 11 8 11 17 19 16 12 9 5 4 4 4
Wind Gust (mph) 24 37 51 37 40 41 36 31
Precip Prob (%) 0 0 0 0 20 20 30 20 0 0 0 0 0 0 0 0 0
Precip Type S S S S
6 Hour QPF 0.00 0.00 0.01 0.01 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.02 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.5 11.5 10.8 10.4 9.7 8.5 8.0 7.3 7.1 7.8 8.5 8.8 8.9 8.6 8.0 7.5 6.9
Snow Density (%) 0 0 0 0 0 50 20 14 12 12 20 33 50 50 50 50 50
...Snowcrest/Gravelly/Ruby/Blacktail Ranges...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW FW SC SC SC SC SC FW FW FW FW FW FW
Cloud Cover (%) 30 20 10 5 10 20 40 25 25 30 30 20 15 10 15 15 15
Temperature 42 48 60 64 59 48 42 37 34 37 46 52 51 42 38 35 33
Max/Min Temp 64 33 53 32
Wind Dir SE S S SW SW W W W SW W W NW NW N E SE SE
Wind (mph) 5 11 23 28 25 13 12 9 9 12 13 13 11 5 4 5 6
Wind Gust (mph) 28 44 51 47 29 34 31
Precip Prob (%) 0 0 0 0 0 0 10 10 0 0 0 0 0 0 0 0 0
Precip Type 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 MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.7 11.4 10.5 10.1 9.4 8.2 7.7 7.2 6.9 7.9 8.7 8.9 9.0 8.7 8.2 7.6 6.9
Snow Density (%) 0 0 0 0 0 100 33 20 16 16 25 100 100 100 100 50 50
...Centennial Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW CL FW SC FW FW FW FW SC SC FW FW FW FW
Cloud Cover (%) 20 15 15 10 5 20 40 20 20 20 20 30 30 10 10 10 10
Temperature 45 50 57 60 57 49 45 39 34 37 45 52 51 43 40 36 33
Max/Min Temp 61 34 53 33
Wind Dir SE S S SW SW SW W W SW SW W W W NW NE NE E
Wind (mph) 10 13 21 27 26 12 12 10 8 11 12 11 9 5 4 5 5
Wind Gust (mph) 40 47 44
Precip Prob (%) 0 0 0 0 0 0 5 5 0 0 0 0 0 0 0 0 0
Precip Type
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 MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.8 11.6 10.4 10.2 9.3 8.5 7.8 7.2 6.8 7.8 8.7 9.1 9.3 8.9 8.5 8.0 7.5
Snow Density (%) 0 0 0 0 0 0 50 25 20 16 33 100 100 100 100 50 50
...Anaconda/Highland Ranges...
Date Sunday 09/13/26 Monday 09/14/26
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 FW SC SC BK BK OV BK BK SC FW FW FW FW SC
Cloud Cover (%) 60 30 25 20 40 35 50 60 70 65 55 30 5 10 15 20 30
Temperature 40 44 54 57 52 41 38 35 34 36 41 47 48 39 36 34 32
Max/Min Temp 57 33 48 31
Wind Dir E S SW SW W W W W W W W W NW N NE E SE
Wind (mph) 10 5 11 14 14 12 9 9 13 13 11 9 8 4 3 3 3
Wind Gust (mph) 28 35 27 33 32 28
Precip Prob (%) 0 0 10 0 20 10 20 20 20 0 0 0 0 0 0 0 0
Precip Type R S R 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 MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.2 10.7 9.9 9.2 8.8 8.0 7.4 7.2 7.3 7.8 8.3 8.6 8.7 8.3 7.7 7.2 6.8
Snow Density (%) 0 0 100 100 100 33 16 14 16 16 20 33 50 50 50 50 50
...Pioneer Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW SC SC SC SC BK BK BK FW FW FW FW FW FW
Cloud Cover (%) 50 30 10 15 30 30 30 50 70 65 55 20 10 10 10 15 20
Temperature 39 44 56 58 54 43 37 34 32 34 41 47 48 39 36 33 31
Max/Min Temp 59 31 48 30
Wind Dir SE S SW SW W W W W W W W W NW N N S S
Wind (mph) 8 8 14 17 16 14 11 10 14 16 12 11 9 5 3 3 4
Wind Gust (mph) 39 43 39 35 32 32 41 41 29
Precip Prob (%) 0 0 0 0 10 5 5 10 5 0 0 0 0 0 0 0 0
Precip Type R 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 MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.4 10.8 10.2 9.5 8.9 7.8 7.4 7.2 7.2 7.9 8.4 8.7 8.9 8.5 7.8 7.2 6.6
Snow Density (%) 0 0 0 0 100 33 16 14 12 14 20 33 50 50 50 50 50
...Beaverhead/Tendoy Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW FW SC SC SC SC SC FW FW FW FW FW FW
Cloud Cover (%) 45 20 10 5 10 20 30 25 40 35 25 20 15 10 10 10 15
Temperature 43 48 57 58 54 44 38 34 32 36 44 50 50 41 37 33 32
Max/Min Temp 59 31 51 31
Wind Dir SE S SW SW SW W W W W W W NW NW N NE SE SE
Wind (mph) 10 12 21 21 20 14 12 10 10 10 10 10 9 5 4 5 6
Wind Gust (mph) 32 34 48 43 42 35 35 28 31 29
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Precip Type
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 MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.5 10.6 10.0 9.4 8.9 7.8 7.3 7.1 7.0 7.8 8.6 8.9 9.1 8.7 8.2 7.8 7.2
Snow Density (%) 0 0 0 0 100 33 20 16 14 14 25 50 100 100 100 50 50
...Absoraka-Beartooth/Cooke City Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW FW BK SC SC FW SC BK BK FW FW FW FW
Cloud Cover (%) 45 15 10 20 10 20 60 40 45 20 50 55 55 25 10 5 10
Temperature 36 44 58 60 55 45 42 36 31 32 39 45 44 36 32 29 28
Max/Min Temp 61 30 46 27
Wind Dir SE S SW SW SW SW SW SW SW SW W W W W W S SE
Wind (mph) 6 8 18 21 23 17 18 18 17 20 20 18 12 4 3 4 5
Wind Gust (mph) 36 42 43 37 40 44 43 47 46 39 29
Precip Prob (%) 0 0 0 0 0 0 40 20 10 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.02 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.1 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.7 12.2 12.0 11.6 11.2 9.7 8.5 7.7 7.4 8.0 8.9 9.2 9.2 8.9 8.3 7.9 7.5
Snow Density (%) 0 0 0 0 0 100 25 12 10 11 16 33 33 33 25 25 25
...Absoraka Mountains Above 6000ft Northeast Facing...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW FW BK SC SC FW FW SC SC FW FW FW FW
Cloud Cover (%) 45 20 15 20 10 10 55 45 35 15 25 40 40 20 10 10 15
Temperature 36 43 56 62 59 49 45 40 36 37 44 49 47 39 36 34 33
Max/Min Temp 63 35 49 32
Wind Dir S S S SW SW SW W SW SW W W W NW NW SW SW S
Wind (mph) 5 9 12 17 18 18 17 18 21 27 25 21 16 6 5 6 8
Wind Gust (mph) 37 37 39 46 48 43 49 62 64 65 56 49 40
Precip Prob (%) 0 0 0 0 0 0 40 20 10 0 0 0 0 0 0 0 0
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.03 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.03 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
6 Hour Snow 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.1 0.0 0.0
Low End Snow MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.6 12.1 12.0 11.8 11.2 9.8 9.1 8.0 7.5 7.9 8.8 9.1 9.1 8.8 8.3 7.9 7.5
Snow Density (%) 0 0 0 0 0 100 33 16 16 16 25 33 33 33 33 33 33
...Absoraka Mountains Above 6000ft West Facing...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW FW SC SC SC FW FW SC SC FW FW FW FW
Cloud Cover (%) 40 15 15 15 10 20 45 40 30 20 25 35 45 20 10 10 10
Temperature 39 46 60 63 59 49 44 38 33 36 44 50 49 41 37 33 31
Max/Min Temp 64 33 51 30
Wind Dir SE S SW SW SW SW W SW SW SW W W W NW S S SE
Wind (mph) 5 8 16 20 20 14 13 12 13 17 17 14 10 4 3 4 4
Wind Gust (mph) 24 28 46 55 51 48 44 57 58 58 56 48 35
Precip Prob (%) 0 0 0 0 0 0 20 20 0 0 0 0 0 0 0 0 0
Precip Type R S
6 Hour QPF 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.02 0.00 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.7 12.0 11.5 11.2 10.5 9.3 8.5 7.7 7.2 7.9 8.8 9.1 9.2 8.8 8.3 7.9 7.5
Snow Density (%) 0 0 0 0 0 100 50 20 14 14 25 50 50 50 50 50 50
...Crazy Mountains...
Date Sunday 09/13/26 Monday 09/14/26
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 FW FW FW FW FW BK BK BK BK SC SC SC FW FW FW SC
Cloud Cover (%) 35 20 10 20 15 15 65 55 55 50 45 45 25 15 10 15 30
Temperature 38 42 52 61 60 49 43 39 36 38 41 46 46 40 38 36 34
Max/Min Temp 62 36 48 33
Wind Dir SE SE SE S SW W W W W W W W W NW W SW SE
Wind (mph) 14 14 11 14 16 12 17 21 28 33 33 29 21 10 5 4 4
Wind Gust (mph) 34 33 28 33 34 34 48 67 67 64 59 51
Precip Prob (%) 0 0 0 0 5 5 50 30 10 20 0 0 0 0 0 0 0
Precip Type R S S
6 Hour QPF 0.00 0.00 0.00 0.03 0.02 0.00 0.00 0.00
12 Hour QPF 0.00 0.03 0.02 0.00
Low End QPF MM MM MM MM
High End QPF MM MM MM MM
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 MM MM MM MM
High End Snow MM MM MM MM
Snow Level (kft) 11.0 11.6 11.8 11.3 10.6 9.8 9.1 7.6 7.1 7.7 8.3 8.6 8.7 8.4 7.9 7.5 7.1
Snow Density (%) 0 0 0 0 0 0 50 20 16 16 25 33 50 50 50 50 50
$$
--- Precip Type Codes ---
CODE TYPE
T Thunderstorms
R Rain
S Snow
I Sleet
Z Freezing Rain