Avalanche Weather Guidance
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
205
FWUS45 KTFX 211001
AVGTFX
Avalanche Weather Guidance
National Weather Service Great Falls MT
400 AM MDT Mon Sep 21 2026
...Glacier National Park/Marias Pass...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL CL CL CL FW FW FW SC SC BK BK BK BK SC FW FW
Cloud Cover (%) 5 0 0 5 5 10 10 10 40 35 55 55 65 60 40 20 20
Temperature 46 49 60 64 62 51 49 48 47 50 60 62 60 52 49 47 46
Max/Min Temp 64 46 62 45
Wind Dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 10 10 10 11 9 10 11 11 10 10 12 11 8 9 10 11 12
Wind Gust (mph)
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) 9.4 9.3 9.3 9.6 9.6 9.7 9.8 9.8 9.6 9.7 10.2 10.4 10.5 10.0 9.6 8.9 8.7
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bob Marshall/Scapegoat Wilderness...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL CL CL CL FW FW FW CL SC SC SC OV OV BK SC SC FW
Cloud Cover (%) 5 5 0 5 10 10 5 5 35 40 45 70 85 60 45 30 15
Temperature 43 47 61 65 64 52 48 46 45 49 62 64 62 52 49 46 45
Max/Min Temp 66 44 64 44
Wind Dir W SW SW SW SW W SW SW SW SW W W W W W W SW
Wind (mph) 4 5 5 5 4 5 5 5 5 5 6 6 5 5 5 5 6
Wind Gust (mph)
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) 9.7 9.5 9.6 10.3 10.4 10.3 10.2 10.2 10.2 10.2 10.7 10.8 10.9 10.4 10.2 10.1 10.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Nevada Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL CL CL FW FW FW FW SC SC SC OV OV BK SC SC FW
Cloud Cover (%) 5 5 0 5 5 10 10 10 30 30 50 70 95 65 50 35 20
Temperature 44 47 60 66 65 54 51 49 47 49 62 66 64 55 52 49 47
Max/Min Temp 67 46 67 47
Wind Dir SW SW S SW SW S SW SW SW SW SW SW SW SW SW SW SW
Wind (mph) 4 4 5 5 4 3 4 4 4 4 4 5 4 4 5 5 5
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 5 5 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) 9.9 9.6 9.5 10.1 10.4 10.5 10.7 10.5 10.4 10.5 10.7 10.9 11.0 10.5 10.5 10.5 10.5
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Elkhorn/Boulder Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL CL FW FW FW FW FW SC SC BK OV OV OV BK SC SC
Cloud Cover (%) 5 5 0 10 5 15 10 10 35 40 65 75 100 75 55 40 25
Temperature 41 45 58 63 62 51 48 46 44 48 60 63 61 52 49 46 44
Max/Min Temp 64 43 64 44
Wind Dir SW S S S SE SE S SW SW SW S SW SW SW SW SW SW
Wind (mph) 4 4 5 5 4 3 4 4 4 4 4 4 3 5 5 5 5
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 20 20 5 5 0
Precip Type 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) 9.8 9.6 9.8 10.6 10.9 10.9 10.8 10.7 10.6 10.8 11.1 11.3 11.3 11.0 10.9 10.8 10.6
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Big Belt Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL FW CL FW FW FW SC SC SC BK OV BK BK SC FW
Cloud Cover (%) 10 10 0 5 5 10 10 10 35 30 35 65 80 60 60 45 25
Temperature 45 48 59 65 64 54 51 49 47 50 62 66 65 56 54 50 48
Max/Min Temp 65 45 67 48
Wind Dir S S S SW SW SE S S S S SW SW SW S S S S
Wind (mph) 5 6 8 5 3 5 6 6 5 5 5 4 3 4 4 4 5
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 5 5 5 5 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) 9.7 9.4 9.4 9.8 10.0 10.2 10.3 10.5 10.4 10.6 10.7 10.8 11.0 10.6 10.7 10.6 10.6
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Little Belt Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL FW CL FW FW FW FW SC SC BK OV BK BK BK SC
Cloud Cover (%) 15 10 5 10 5 10 15 15 25 30 25 65 85 65 60 55 40
Temperature 43 48 62 66 64 52 49 47 47 53 65 67 65 55 52 49 48
Max/Min Temp 67 44 68 47
Wind Dir SW S SW S S S S SW SW SW W W W SW SW SW SW
Wind (mph) 5 5 4 5 5 9 10 8 5 4 5 5 3 4 5 5 5
Wind Gust (mph) 23 24 28
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 5 5 5 5 5
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) 9.2 9.1 9.4 10.4 10.7 10.2 9.8 9.9 10.1 10.4 10.8 11.0 11.1 10.9 10.6 10.5 10.4
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Highwood Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL CL CL FW FW FW FW FW FW SC BK OV BK BK SC SC
Cloud Cover (%) 10 0 0 5 5 10 10 10 15 20 25 55 90 65 65 50 35
Temperature 49 53 64 69 67 57 54 54 53 57 67 70 68 59 57 55 54
Max/Min Temp 69 51 70 53
Wind Dir SW S S SE SE SE S SW SW SW NW N NE S SW SW SW
Wind (mph) 4 4 4 4 6 9 6 6 4 3 4 4 3 5 6 6 8
Wind Gust (mph)
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) 9.0 9.0 9.1 9.8 10.2 9.9 9.6 9.6 10.1 10.2 10.6 10.9 11.1 10.8 10.7 10.5 10.2
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Snowy/Judith Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 FW FW FW FW FW FW FW SC SC BK BK OV BK
Cloud Cover (%) 40 35 15 10 5 20 15 20 25 20 25 40 50 65 65 75 60
Temperature 45 49 61 66 64 53 50 49 47 55 68 71 68 57 55 53 51
Max/Min Temp 67 44 72 50
Wind Dir S S S SE SE S S S SW SW SW SE SE S S SW W
Wind (mph) 4 4 5 5 8 11 10 8 5 3 4 4 4 5 5 4 5
Wind Gust (mph) 29
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 5 5 5 5 5
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) 9.3 9.3 9.5 9.9 9.8 9.9 9.9 9.7 9.6 9.9 10.5 10.9 11.2 11.0 10.9 10.8 10.6
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bears Paw Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL FW FW FW SC SC FW SC SC OV BK BK BK SC
Cloud Cover (%) 55 55 25 5 5 15 25 30 35 15 25 35 85 55 60 55 40
Temperature 47 50 60 66 63 53 50 49 47 53 67 71 68 56 54 52 50
Max/Min Temp 66 45 71 49
Wind Dir S S S SE SE SE SE S S S SW SW S SE SE SW W
Wind (mph) 8 9 9 9 10 12 11 6 3 4 4 4 2 3 3 2 2
Wind Gust (mph)
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) 8.8 8.8 9.1 8.9 9.3 9.4 9.3 9.3 9.6 9.8 10.0 10.2 10.2 9.9 10.1 10.4 10.5
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Castle/Crazy Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL FW FW FW FW FW SC SC SC BK OV BK OV BK SC
Cloud Cover (%) 30 25 5 10 5 10 20 20 40 35 35 65 85 65 70 65 40
Temperature 42 46 59 64 62 51 47 45 44 49 62 66 64 54 51 49 47
Max/Min Temp 64 42 66 46
Wind Dir S S SW S E SE SE S SW SW SW W W S SW SW SW
Wind (mph) 4 4 5 5 4 5 4 3 4 5 6 5 4 4 4 5 6
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 5 5 5 5 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) 9.5 9.3 9.5 10.3 10.6 10.2 10.3 10.3 10.4 10.4 10.8 11.0 11.0 10.7 10.7 10.8 10.7
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bridger Range...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL FW FW FW FW FW SC SC BK OV BK BK OV BK SC
Cloud Cover (%) 20 25 5 5 5 10 15 15 40 40 55 70 70 65 70 60 35
Temperature 42 46 58 63 62 51 48 45 44 49 61 65 63 54 52 48 46
Max/Min Temp 64 42 65 46
Wind Dir SE S SW SW E SE SE S SW SW SW W W SW SW SW SW
Wind (mph) 3 3 3 3 2 6 5 4 2 3 4 3 2 3 3 3 4
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 5 5 10 10 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) 9.7 9.6 9.8 10.5 10.8 10.6 10.6 10.8 10.6 10.6 10.8 10.9 11.0 10.9 10.9 11.0 10.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Madison Range/Spanish Peaks...
Date Monday 09/21/26 Tuesday 09/22/26
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 FW FW FW FW BK SC OV OV OV OV OV BK SC
Cloud Cover (%) 15 10 5 15 15 15 15 20 55 50 70 75 90 80 75 60 40
Temperature 38 41 54 58 57 47 44 42 41 44 56 59 56 48 46 44 41
Max/Min Temp 59 40 59 41
Wind Dir SE S S SW SW S S S S S SW SW SW SW SW S S
Wind (mph) 3 4 3 4 4 4 5 6 5 4 5 6 4 5 5 5 5
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 30 30 20 20 5
Precip Type 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) 10.2 10.1 10.6 11.4 11.6 11.5 11.1 10.6 10.6 10.7 11.1 11.2 11.2 11.3 11.1 11.1 11.0
Snow Density (%) 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Gallatin Range/Hyalite Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL FW FW FW FW FW BK SC OV OV OV OV OV BK SC
Cloud Cover (%) 10 10 5 20 20 15 15 15 55 40 70 85 95 80 80 60 40
Temperature 39 42 56 61 59 49 46 43 42 45 59 61 58 50 48 45 43
Max/Min Temp 61 41 61 43
Wind Dir S S SW NW N SE S S S S SW W W SW SW S SW
Wind (mph) 4 4 3 4 4 4 6 6 6 5 4 5 4 5 5 5 6
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 30 30 20 20 5
Precip Type 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) 10.2 10.0 10.5 11.4 11.6 11.5 11.2 10.8 10.5 10.7 11.2 11.3 11.3 11.3 11.1 11.1 11.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Lionhead Range...
Date Monday 09/21/26 Tuesday 09/22/26
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 FW FW BK BK OV BK OV OV BK BK BK
Cloud Cover (%) 15 15 10 10 5 15 15 25 60 60 70 65 100 85 65 60 50
Temperature 36 40 56 61 60 46 42 38 36 41 58 62 59 48 45 41 38
Max/Min Temp 62 34 63 37
Wind Dir NE NE SW SW SW S S SE SE SE SW SW SW SW S S S
Wind (mph) 2 2 1 3 2 2 1 2 2 2 4 5 3 3 2 1 1
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 40 40 30 30 5
Precip Type R R R R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00
12 Hour QPF 0.00 0.00 0.00 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) 10.5 10.4 10.7 11.2 11.2 11.1 11.1 10.7 10.6 10.7 11.0 11.1 11.2 10.9 10.9 11.2 11.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Tobacco Root Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL FW FW CL FW FW FW BK SC OV OV OV OV BK BK SC
Cloud Cover (%) 5 5 5 10 5 15 10 20 65 45 75 75 90 75 65 55 25
Temperature 40 44 54 59 58 49 47 45 43 47 57 60 58 50 48 45 43
Max/Min Temp 59 42 60 43
Wind Dir W S S SW W S S SW SW SW SW SW SW SW SW SW SW
Wind (mph) 4 3 5 4 3 4 5 5 5 4 5 5 4 5 5 6 6
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 5 20 20 10 10 0
Precip Type 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) 10.0 9.8 10.3 11.1 11.2 11.0 11.0 10.8 10.7 10.9 11.1 11.2 11.3 11.1 11.1 11.0 10.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Snowcrest/Gravelly/Ruby/Blacktail Ranges...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL FW FW FW FW FW SC BK BK OV OV OV OV OV BK SC
Cloud Cover (%) 10 5 10 15 15 10 20 25 60 60 75 80 90 80 70 60 35
Temperature 39 43 55 60 59 49 46 44 42 45 58 61 58 50 47 44 42
Max/Min Temp 61 40 61 42
Wind Dir SE S S S S S S S S S S SW SW SW S S S
Wind (mph) 4 4 4 5 4 6 8 6 5 5 6 8 6 6 5 6 6
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 5 30 30 10 10 0
Precip Type 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) 10.2 10.1 10.5 11.2 11.4 11.3 10.9 10.7 10.7 10.8 11.1 11.2 11.3 11.2 11.2 11.0 10.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Centennial Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 FW FW SC SC BK BK BK BK OV OV BK BK SC
Cloud Cover (%) 20 15 15 15 5 10 30 35 55 60 70 70 90 80 65 60 45
Temperature 38 40 53 59 57 48 45 43 41 44 56 59 57 50 47 44 42
Max/Min Temp 59 39 60 42
Wind Dir E E S S S S S S SE SE S SW SW SW W SE SE
Wind (mph) 4 4 4 5 5 3 4 4 4 4 6 9 6 4 4 3 3
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 20 20 20 20 5
Precip Type T 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) 10.4 10.3 10.6 11.3 11.4 11.0 10.6 10.5 10.6 10.7 11.0 11.1 11.1 11.0 11.0 11.1 11.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Anaconda/Highland Ranges...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL CL FW FW FW FW FW BK SC OV OV OV BK BK SC FW
Cloud Cover (%) 5 5 0 5 5 15 15 20 55 50 70 80 85 60 50 30 20
Temperature 40 43 56 62 61 50 47 45 43 45 57 62 60 50 47 44 42
Max/Min Temp 62 41 62 42
Wind Dir SE S S SW SW NE E SE S S SW W W SW S S S
Wind (mph) 3 4 4 4 4 3 3 3 3 3 4 4 4 4 3 3 3
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 10 10 5 5 0
Precip Type 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) 10.0 9.9 10.0 10.7 10.9 10.8 11.0 11.0 11.0 10.9 11.2 11.4 11.2 11.0 11.0 10.8 10.6
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Pioneer Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL CL FW FW FW FW FW BK BK OV OV OV BK BK SC FW
Cloud Cover (%) 5 5 5 5 10 20 15 25 60 55 80 80 90 70 60 40 20
Temperature 39 42 56 61 60 49 46 44 42 45 58 61 59 50 46 43 41
Max/Min Temp 61 41 61 41
Wind Dir S S SW SW SW SE S S SW SW SW SW SW S SW SW SW
Wind (mph) 3 3 4 5 4 3 4 3 3 3 4 5 4 4 4 4 4
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 20 30 30 5 5 0
Precip Type R R R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.02 0.01 0.00
12 Hour QPF 0.00 0.00 0.02 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) 10.2 10.1 10.4 11.2 11.4 11.2 11.1 11.0 11.1 11.0 11.4 11.5 11.4 11.1 11.0 10.9 10.6
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Beaverhead/Tendoy Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 CL FW FW FW SC SC BK BK OV OV OV OV BK SC FW
Cloud Cover (%) 10 5 5 10 15 20 30 35 65 65 75 80 85 75 65 35 25
Temperature 39 43 55 60 59 48 45 43 42 45 57 60 57 48 45 42 41
Max/Min Temp 60 40 60 40
Wind Dir S S S S SW S S SW S S SW SW SW SW SW SW S
Wind (mph) 4 4 4 5 4 5 6 5 4 4 5 6 5 6 5 5 5
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 5 30 30 5 5 0
Precip Type 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) 10.4 10.2 10.6 11.3 11.4 11.3 11.2 11.1 11.0 11.0 11.3 11.4 11.4 11.1 11.1 10.9 10.6
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Absoraka-Beartooth/Cooke City Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 FW FW FW FW SC SC BK BK OV OV OV BK BK
Cloud Cover (%) 20 25 5 20 20 20 15 15 45 40 60 65 80 85 85 65 55
Temperature 34 38 51 56 54 41 39 37 36 41 54 57 54 44 42 40 38
Max/Min Temp 57 34 57 38
Wind Dir W S SW SW W SE SE S S S SW SW SW SW SW SW SW
Wind (mph) 3 3 3 5 3 5 5 4 4 5 6 8 4 5 4 3 4
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 30 30 30 30 10
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.00
12 Hour QPF 0.00 0.00 0.00 0.03
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) 10.4 10.2 10.9 11.5 11.7 11.7 11.4 11.2 10.9 10.9 11.3 11.4 11.5 11.4 11.2 11.1 11.0
Snow Density (%) 100 100 100 0 0 0 0 0 100 0 0 0 0 0 100 100 100
...Absoraka Mountains Above 6000ft Northeast Facing...
Date Monday 09/21/26 Tuesday 09/22/26
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 FW FW FW FW SC SC BK OV OV OV OV BK BK
Cloud Cover (%) 20 10 10 25 15 20 10 15 50 40 50 70 90 85 80 70 50
Temperature 38 43 54 57 54 45 44 43 42 47 58 60 56 49 47 46 44
Max/Min Temp 57 40 60 43
Wind Dir SW SW NE NE E S SW SW SW SW SW W S SW SW SW SW
Wind (mph) 5 4 4 8 6 6 9 9 9 8 5 6 5 8 9 9 10
Wind Gust (mph) 27 25
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 30 30 20 20 10
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.01
12 Hour QPF 0.00 0.00 0.00 0.03
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) 10.3 10.1 10.7 11.6 11.8 11.6 11.3 11.0 10.7 10.6 11.3 11.6 11.7 11.4 11.3 11.1 11.0
Snow Density (%) 100 100 100 0 0 0 0 0 0 0 0 0 0 0 100 100 100
...Absoraka Mountains Above 6000ft West Facing...
Date Monday 09/21/26 Tuesday 09/22/26
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 FW FW FW FW BK SC BK BK OV OV OV BK SC
Cloud Cover (%) 15 15 5 15 15 15 15 15 55 45 65 70 90 85 75 65 50
Temperature 37 41 55 60 58 47 43 41 39 43 57 61 58 49 46 43 41
Max/Min Temp 60 38 61 40
Wind Dir S S SW SW SW S S S S S SW SW SW SW SW SW SW
Wind (mph) 3 3 3 4 4 4 5 5 4 4 5 6 4 4 4 4 5
Wind Gust (mph) 20 26 24 25 26 25 29
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 30 30 20 20 10
Precip Type R R R R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00
12 Hour QPF 0.00 0.00 0.00 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) 10.4 10.2 10.7 11.5 11.7 11.5 11.3 11.0 10.7 10.8 11.2 11.3 11.4 11.3 11.1 11.1 11.0
Snow Density (%) 100 100 0 0 0 0 0 0 0 0 0 0 0 0 100 0 0
...Crazy Mountains...
Date Monday 09/21/26 Tuesday 09/22/26
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 FW FW SC SC SC BK OV OV OV OV SC
Cloud Cover (%) 20 20 5 10 5 10 10 15 40 45 45 65 80 75 80 70 45
Temperature 41 45 56 61 59 49 46 45 44 49 60 63 61 53 51 49 47
Max/Min Temp 61 42 64 46
Wind Dir NW W SW S SE SE SW SW SW SW SW SW SW SW W W W
Wind (mph) 3 3 5 6 6 8 4 4 5 5 5 5 4 5 5 6 8
Wind Gust (mph)
Precip Prob (%) 0 0 0 0 0 0 0 0 0 0 0 0 10 10 10 10 5
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) 9.7 9.5 9.9 10.8 10.8 10.5 10.6 10.7 10.7 10.7 11.0 11.1 11.0 10.9 10.8 11.0 10.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
$$
--- Precip Type Codes ---
CODE TYPE
T Thunderstorms
R Rain
S Snow
I Sleet
Z Freezing Rain