Avalanche Weather Guidance
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
422
FWUS45 KTFX 172201
AVGTFX
Avalanche Weather Guidance
National Weather Service Great Falls MT
400 PM MDT Thu Sep 17 2026
...Glacier National Park/Marias Pass...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover FW SC BK SC SC FW SC SC BK OV BK SC BK SC FW FW FW
Cloud Cover (%) 25 35 50 45 30 25 35 50 65 75 65 50 60 35 25 25 20
Temperature 60 50 49 47 47 49 57 59 57 49 46 45 43 46 56 59 56
Min/Max Temp 45 60 43 59
Wind Dir E SE SW SW W W N NE NE E E N NW NW SE SE SE
Wind (mph) 5 3 4 5 4 3 4 6 5 4 3 3 3 3 5 6 6
Wind Gust (mph)
Precip Prob (%) 0 5 5 5 0 0 5 5 5 0 0 0 0 0 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) 11.0 11.7 11.9 11.8 11.4 11.0 10.8 11.1 11.1 10.9 10.6 10.4 10.2 10.1 10.2 10.5 10.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bob Marshall/Scapegoat Wilderness...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover SC OV BK SC SC SC SC OV OV OV OV OV OV OV BK BK BK
Cloud Cover (%) 35 70 65 35 30 30 45 70 80 90 90 85 100 75 60 55 60
Temperature 62 51 50 47 47 49 59 60 55 50 48 46 45 46 52 55 53
Min/Max Temp 45 61 45 55
Wind Dir E SE SW W W W NE NE NE NE NE N N N NE E E
Wind (mph) 4 3 4 4 3 3 3 5 4 4 4 3 4 4 5 5 4
Wind Gust (mph)
Precip Prob (%) 5 30 10 5 0 0 10 40 50 20 20 20 40 40 30 30 5
Precip Type T R R R R R R R R R R
6 Hour QPF 0.01 0.00 0.00 0.03 0.02 0.03 0.08 0.02
12 Hour QPF 0.01 0.03 0.05 0.10
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) 12.5 12.5 12.2 11.4 10.8 10.8 11.0 11.4 11.3 11.2 11.1 10.9 10.7 10.7 10.5 10.5 10.7
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Nevada Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK BK SC SC SC SC SC BK OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 60 70 50 40 45 45 45 65 85 95 95 95 100 85 75 75 70
Temperature 65 54 53 49 49 50 59 62 57 53 52 50 49 47 50 53 51
Min/Max Temp 47 62 47 53
Wind Dir SE S W W SW W N N NE NE N N N N N NE NE
Wind (mph) 4 4 3 4 4 3 3 5 6 6 5 5 6 6 5 5 4
Wind Gust (mph)
Precip Prob (%) 40 40 5 0 0 5 5 40 50 60 70 50 60 60 40 40 20
Precip Type T R R T R R R R R R R R
6 Hour QPF 0.07 0.00 0.00 0.05 0.18 0.19 0.32 0.08
12 Hour QPF 0.07 0.05 0.37 0.40
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) 12.7 12.6 12.3 11.2 10.7 10.9 11.3 11.5 11.3 11.4 11.3 11.1 10.9 10.8 10.6 10.6 10.7
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Elkhorn/Boulder Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC SC BK SC SC OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 65 50 35 45 55 50 50 70 90 95 100 95 100 95 85 85 85
Temperature 64 54 51 48 48 50 58 59 53 49 48 47 47 45 48 48 46
Min/Max Temp 46 60 45 49
Wind Dir S SW SW SW SW SW E NE N N N N N N N N N
Wind (mph) 6 5 5 4 3 3 4 5 6 6 5 6 6 6 6 6 4
Wind Gust (mph)
Precip Prob (%) 40 20 5 0 5 10 20 30 60 80 90 90 90 90 80 80 50
Precip Type T T R R T R R R R R R R R R
6 Hour QPF 0.01 0.00 0.00 0.09 0.29 0.30 0.25 0.25
12 Hour QPF 0.01 0.09 0.59 0.50
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) 12.8 12.5 12.2 11.6 11.4 11.4 11.6 11.9 11.9 11.7 11.5 11.4 11.2 10.9 10.8 11.0 10.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Big Belt Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover SC BK SC SC SC SC FW BK OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 50 50 45 45 50 25 25 60 90 95 95 95 100 90 85 85 80
Temperature 66 56 54 51 51 53 60 63 58 53 52 51 50 48 50 52 50
Min/Max Temp 49 63 48 52
Wind Dir SE S SW SW SW SW NW NE NE NE N N N N N N N
Wind (mph) 4 4 3 3 3 3 3 5 6 6 5 5 5 5 5 5 4
Wind Gust (mph) 24
Precip Prob (%) 20 20 10 0 5 5 10 20 50 70 70 50 80 80 70 70 50
Precip Type T T T T R R R R R R R R
6 Hour QPF 0.00 0.00 0.00 0.05 0.19 0.24 0.34 0.21
12 Hour QPF 0.00 0.05 0.43 0.55
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) 12.7 12.7 12.4 11.9 11.4 11.3 11.5 11.8 11.9 11.7 11.5 11.2 11.1 10.9 10.9 10.8 10.7
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Little Belt Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC SC SC FW FW BK OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 55 50 45 40 40 20 15 65 95 95 95 95 100 90 85 85 80
Temperature 66 55 54 51 51 55 62 63 57 52 50 49 48 47 49 51 49
Min/Max Temp 49 64 47 51
Wind Dir S S SW SW SW W N NE NE NE NE NE N N N N N
Wind (mph) 5 5 5 4 3 2 4 8 5 4 2 2 3 5 6 8 6
Wind Gust (mph)
Precip Prob (%) 5 20 5 5 0 5 5 40 50 70 60 70 80 80 80 80 60
Precip Type T R R R R R R R R R R
6 Hour QPF 0.00 0.00 0.00 0.04 0.13 0.25 0.37 0.27
12 Hour QPF 0.00 0.04 0.38 0.64
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) 12.8 12.8 12.6 12.2 11.6 11.3 11.6 12.1 12.0 11.7 11.5 11.2 11.0 11.0 11.0 10.7 10.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Highwood Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC SC SC FW FW SC OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 55 50 50 40 35 10 10 30 90 90 90 100 100 85 80 70 80
Temperature 64 57 56 52 53 56 61 64 61 55 53 52 51 50 52 55 53
Min/Max Temp 51 64 50 55
Wind Dir E S SW W W W NW N NE NE E E NE NE NE NE NE
Wind (mph) 6 4 6 6 5 4 5 6 5 4 4 4 5 5 6 6 5
Wind Gust (mph)
Precip Prob (%) 5 5 10 5 0 5 5 10 20 20 40 50 50 50 50 50 50
Precip Type T T R R R R R R R
6 Hour QPF 0.00 0.00 0.00 0.00 0.06 0.06 0.28 0.15
12 Hour QPF 0.00 0.00 0.12 0.43
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) 12.7 12.7 12.8 12.4 11.7 11.1 11.0 11.3 11.2 11.3 11.1 10.9 10.7 10.4 10.9 10.1 10.4
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Snowy/Judith Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover OV OV SC SC SC SC FW SC OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 75 70 35 45 35 30 20 50 90 95 100 100 100 95 90 90 90
Temperature 67 58 57 55 54 59 66 67 63 56 54 52 50 49 50 52 50
Min/Max Temp 52 68 48 52
Wind Dir S S SW SW W NW N NE NE NE NE N NE N N N N
Wind (mph) 6 6 5 5 5 5 5 6 6 5 4 5 6 8 8 8 6
Wind Gust (mph)
Precip Prob (%) 5 0 5 0 0 0 5 10 20 40 50 70 90 90 90 90 80
Precip Type T T R R R R R R R R
6 Hour QPF 0.00 0.00 0.00 0.00 0.18 0.28 0.36 0.50
12 Hour QPF 0.00 0.00 0.46 0.86
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) 12.8 12.9 12.9 12.6 12.2 11.8 11.7 12.0 12.0 11.9 11.8 11.6 11.5 11.3 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
...Bears Paw Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK BK SC BK SC FW FW FW OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 65 65 35 65 45 20 15 25 90 95 90 85 100 75 75 80 80
Temperature 64 55 54 52 51 57 64 66 64 55 52 50 48 51 56 58 55
Min/Max Temp 49 67 47 58
Wind Dir SE SE SE W NW NW N N NE NE NE NE NE NE NE NE E
Wind (mph) 6 5 2 2 3 3 4 6 6 8 5 5 5 6 8 8 6
Wind Gust (mph)
Precip Prob (%) 0 0 5 5 5 5 5 5 5 0 5 0 20 20 40 40 50
Precip Type R R R R R
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.13
12 Hour QPF 0.00 0.00 0.00 0.16
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) 12.4 12.5 12.6 12.6 12.4 12.0 11.4 11.1 11.1 10.9 10.8 10.7 10.3 10.1 10.1 9.6 9.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Castle/Crazy Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC SC BK SC SC OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 60 40 45 45 50 30 35 75 95 95 95 95 100 95 95 95 85
Temperature 66 55 54 51 51 53 61 64 57 51 51 50 49 48 48 50 48
Min/Max Temp 49 64 47 50
Wind Dir S S SW SW SW SW W E E NE NE NE NE NE N N N
Wind (mph) 8 5 6 6 5 5 4 5 8 8 6 6 6 6 6 6 5
Wind Gust (mph)
Precip Prob (%) 5 20 5 0 5 10 20 40 60 80 70 90 90 90 90 90 70
Precip Type T R T R R R R R R R R R
6 Hour QPF 0.00 0.00 0.00 0.09 0.35 0.32 0.32 0.45
12 Hour QPF 0.00 0.09 0.67 0.77
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) 12.8 12.9 12.5 12.1 11.9 11.8 12.0 12.3 12.3 12.0 11.8 11.5 11.5 11.4 11.2 10.9 10.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bridger Range...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC BK BK SC SC OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 60 40 45 55 55 35 45 70 95 95 95 95 95 95 95 95 80
Temperature 65 55 54 51 50 52 59 62 56 50 50 49 49 48 48 50 48
Min/Max Temp 49 62 47 50
Wind Dir SE S SW SW SW SW W E E NE NE NE NE N NW NW NW
Wind (mph) 5 5 4 3 2 3 2 3 5 6 4 4 5 4 4 4 4
Wind Gust (mph)
Precip Prob (%) 10 10 5 5 10 10 20 40 50 80 80 90 90 90 90 90 70
Precip Type R R T T T R R R R R R R R
6 Hour QPF 0.00 0.00 0.00 0.10 0.22 0.29 0.34 0.38
12 Hour QPF 0.00 0.10 0.51 0.72
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) 12.8 12.8 12.4 12.0 11.9 12.0 12.0 12.3 12.3 12.0 11.8 11.6 11.5 11.4 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
...Madison Range/Spanish Peaks...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC BK BK BK OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 50 50 45 60 60 55 75 75 95 90 90 90 95 85 95 95 80
Temperature 58 50 50 47 46 47 54 55 50 46 45 44 44 42 44 46 44
Min/Max Temp 44 57 42 47
Wind Dir S S S S S SE S S S SE E SW SW W W W NW
Wind (mph) 10 10 8 5 5 4 4 5 3 3 3 2 2 4 4 5 5
Wind Gust (mph) 27
Precip Prob (%) 30 10 5 20 30 20 50 50 50 70 60 60 80 80 90 90 70
Precip Type R R R R T T T T R R R R R R R R
6 Hour QPF 0.00 0.01 0.02 0.11 0.11 0.16 0.17 0.25
12 Hour QPF 0.01 0.13 0.27 0.42
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) 12.7 12.6 12.3 12.2 12.2 12.2 12.2 12.2 12.1 11.9 11.7 11.4 11.2 10.9 10.8 11.0 11.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 100 100 100 100 100 100 100 100
...Gallatin Range/Hyalite Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC BK BK BK BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 55 45 40 55 60 50 65 80 90 95 90 90 90 90 95 95 85
Temperature 60 53 51 48 47 48 56 57 51 47 46 46 45 43 45 47 45
Min/Max Temp 45 59 43 47
Wind Dir S S S S S S S S SE SE E SE SW NW NW NW NW
Wind (mph) 10 12 9 5 5 4 3 5 3 4 2 2 2 4 4 5 5
Wind Gust (mph)
Precip Prob (%) 10 10 5 5 30 30 40 50 50 80 80 80 90 90 100 100 70
Precip Type T R R T T T R R R R R R R R
6 Hour QPF 0.00 0.00 0.01 0.07 0.14 0.17 0.21 0.29
12 Hour QPF 0.00 0.08 0.31 0.50
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) 12.8 12.6 12.2 12.2 12.2 12.2 12.3 12.3 12.3 12.0 11.7 11.4 11.4 11.1 11.0 11.1 11.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 100 100 100 100 100 100 100
...Lionhead Range...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK BK BK BK BK SC OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 50 60 55 65 55 50 75 85 90 95 90 100 100 85 85 85 70
Temperature 59 50 49 45 45 48 58 60 54 47 46 44 43 43 49 52 49
Min/Max Temp 43 62 41 52
Wind Dir S S SW S SE E S S SE SE S S S SW SW SW SW
Wind (mph) 4 4 2 2 2 2 3 4 1 2 1 1 1 2 4 4 3
Wind Gust (mph)
Precip Prob (%) 30 30 10 40 20 20 60 70 80 70 30 80 80 80 80 80 50
Precip Type R R R R R R R R R R R R R R R R
6 Hour QPF 0.01 0.03 0.03 0.15 0.10 0.10 0.06 0.09
12 Hour QPF 0.04 0.18 0.20 0.15
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) 12.9 12.8 12.5 12.6 12.5 12.4 12.3 12.1 11.9 11.8 11.6 11.4 10.9 10.4 10.4 10.7 10.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 100 100 0 0
...Tobacco Root Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK BK SC BK BK SC BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 55 50 45 55 60 50 60 75 90 95 100 95 100 95 95 95 80
Temperature 60 53 52 48 48 49 53 55 50 46 46 46 45 44 44 45 44
Min/Max Temp 46 55 44 46
Wind Dir S SW SW SW SW S SE SE E NE NE N NW NW NW NW N
Wind (mph) 11 11 9 5 4 3 4 5 4 5 5 4 4 5 5 5 5
Wind Gust (mph)
Precip Prob (%) 30 10 5 10 30 20 40 50 70 80 90 80 100 100 90 90 70
Precip Type T R R R R T R R R R R R R R R
6 Hour QPF 0.00 0.00 0.04 0.09 0.20 0.29 0.28 0.25
12 Hour QPF 0.00 0.13 0.49 0.53
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) 12.7 12.4 12.1 11.9 11.9 11.8 12.0 12.4 12.0 11.8 11.6 11.4 11.2 11.0 11.0 11.0 11.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 100 100 100 100 100 100 100
...Snowcrest/Gravelly/Ruby/Blacktail Ranges...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK BK SC BK BK SC BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 55 50 45 60 60 50 70 80 90 90 95 90 90 85 90 90 80
Temperature 60 52 51 48 47 48 55 57 52 47 46 45 45 44 47 49 47
Min/Max Temp 45 58 43 50
Wind Dir S S S S SE SE S S SE N SW SW SW W W W NW
Wind (mph) 16 12 10 6 5 4 5 8 5 5 4 4 3 4 6 6 6
Wind Gust (mph)
Precip Prob (%) 30 30 10 30 30 20 40 50 50 70 60 60 70 70 80 80 60
Precip Type T R R R R T T T T R R R R R R R R
6 Hour QPF 0.00 0.02 0.03 0.11 0.12 0.17 0.13 0.18
12 Hour QPF 0.02 0.14 0.29 0.31
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) 12.5 12.4 12.2 12.2 12.1 12.1 12.1 12.0 11.8 11.7 11.4 11.2 11.0 10.8 10.8 11.0 11.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 100 100 100 100 0 0
...Centennial Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK BK BK BK BK BK OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 65 65 55 70 60 60 75 80 90 90 95 95 95 85 85 85 70
Temperature 57 51 50 48 47 48 53 56 52 47 47 46 45 43 46 49 48
Min/Max Temp 45 57 43 49
Wind Dir S SE SE SE SE SE SE SE SE SE S S S S SW SW W
Wind (mph) 10 8 6 5 5 6 6 6 5 5 4 4 4 5 6 6 5
Wind Gust (mph)
Precip Prob (%) 50 50 20 50 40 30 60 60 60 70 60 60 70 70 80 80 50
Precip Type T R R R R R R R R R R R R R R R R
6 Hour QPF 0.01 0.05 0.04 0.19 0.13 0.11 0.07 0.12
12 Hour QPF 0.06 0.23 0.24 0.19
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) 12.7 12.6 12.5 12.4 12.3 12.2 12.1 12.0 11.8 11.7 11.6 11.2 10.9 10.6 10.4 10.8 11.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 100 100 100 100 100 0
...Anaconda/Highland Ranges...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK BK SC SC BK BK BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 65 60 30 50 65 65 65 90 85 90 95 95 95 95 85 85 75
Temperature 62 52 49 46 46 47 54 55 50 46 46 46 46 45 47 49 47
Min/Max Temp 44 56 44 49
Wind Dir S W SW SW SE SE NW N N N N NW NW NW NW NW N
Wind (mph) 8 4 3 2 2 3 3 4 4 5 5 5 4 4 4 4 4
Wind Gust (mph)
Precip Prob (%) 50 50 5 10 40 30 50 80 70 60 80 70 90 90 80 80 30
Precip Type T R R R R R R R R R R R R R R
6 Hour QPF 0.03 0.01 0.06 0.18 0.20 0.31 0.22 0.17
12 Hour QPF 0.04 0.24 0.51 0.39
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) 12.6 12.4 11.7 11.3 11.2 11.4 11.4 11.4 11.4 11.3 11.2 11.1 11.0 10.9 10.9 11.1 11.2
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 100 100 100 100 0 0
...Pioneer Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC BK BK BK BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 55 50 30 55 70 55 65 90 90 95 95 95 95 95 90 90 80
Temperature 60 51 49 46 45 47 53 54 49 46 45 45 44 43 46 48 46
Min/Max Temp 44 55 42 48
Wind Dir S S S S SE SE SE NE N N N NW NW NW NW NW N
Wind (mph) 9 5 4 3 2 3 4 5 4 5 5 4 4 5 4 5 4
Wind Gust (mph)
Precip Prob (%) 40 20 5 20 40 30 30 80 60 60 80 70 90 90 90 90 50
Precip Type T R R R R R R R R R R R R R R R
6 Hour QPF 0.01 0.02 0.10 0.20 0.17 0.31 0.17 0.17
12 Hour QPF 0.03 0.30 0.48 0.34
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) 12.6 12.3 11.9 11.6 11.7 11.6 11.7 11.5 11.4 11.3 11.3 11.1 11.0 10.9 10.7 11.1 11.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 100 100 100 100 100 100 100 0
...Beaverhead/Tendoy Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK BK SC BK BK BK OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 55 50 45 70 60 65 75 85 90 90 95 90 90 90 90 90 75
Temperature 59 50 48 45 45 47 53 54 49 45 44 44 44 43 46 48 46
Min/Max Temp 44 55 42 48
Wind Dir S S S S S SE SE SW N NW NW NW W NW NW NW NW
Wind (mph) 12 9 5 4 4 4 5 6 5 6 5 5 5 5 5 5 5
Wind Gust (mph)
Precip Prob (%) 40 20 20 50 40 40 50 70 60 70 70 70 80 80 80 80 50
Precip Type R R R R R R T R R R R R R R R R R
6 Hour QPF 0.01 0.02 0.05 0.16 0.23 0.18 0.13 0.14
12 Hour QPF 0.03 0.21 0.41 0.27
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) 12.4 12.3 11.9 11.9 11.9 11.8 11.7 11.4 11.4 11.3 11.1 10.9 10.9 10.7 10.7 11.1 11.2
Snow Density (%) 0 0 0 0 0 0 0 0 100 100 100 100 100 100 100 100 100
...Absoraka-Beartooth/Cooke City Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover OV SC SC BK BK BK BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 75 40 35 60 65 60 60 90 95 95 90 85 100 90 95 95 90
Temperature 52 46 46 43 43 45 54 55 47 44 43 41 41 40 43 44 42
Min/Max Temp 40 57 39 45
Wind Dir S S S SW S S S S N NE E S SW W W W W
Wind (mph) 9 8 6 4 4 4 4 5 3 4 3 2 3 4 4 5 5
Wind Gust (mph)
Precip Prob (%) 10 5 5 10 30 20 40 80 60 90 70 30 80 80 90 90 80
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.17 0.23 0.11 0.24 0.39
12 Hour QPF 0.00 0.17 0.34 0.63
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) 13.1 13.0 12.6 12.3 12.4 12.3 12.4 12.5 12.5 12.3 12.0 11.7 11.5 11.1 11.0 11.1 11.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 100 100 100 50 50 50 50 50
...Absoraka Mountains Above 6000ft Northeast Facing...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover OV SC SC SC BK SC BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 75 45 35 45 50 40 50 90 95 95 90 80 90 90 100 100 90
Temperature 57 51 51 48 49 51 57 56 50 47 46 45 44 43 44 45 43
Min/Max Temp 47 58 42 46
Wind Dir S SW SW SW SW SW S SE S NE N W W NW NW NW NW
Wind (mph) 9 13 12 10 9 6 5 5 4 4 3 3 3 5 5 6 6
Wind Gust (mph) 31 29
Precip Prob (%) 5 0 5 5 10 20 30 80 60 80 80 50 80 80 100 100 90
Precip Type
6 Hour QPF 0.00 0.00 0.00 0.14 0.24 0.19 0.30 0.51
12 Hour QPF 0.00 0.14 0.43 0.81
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) 13.1 13.0 12.4 12.1 12.2 12.2 12.5 12.5 12.5 12.4 12.1 11.8 11.6 11.4 11.2 11.2 11.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 100 100 100 100 100 100 50 50
...Absoraka Mountains Above 6000ft West Facing...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC BK BK BK BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 60 40 40 60 65 55 65 85 95 90 90 90 95 90 95 95 85
Temperature 58 51 50 46 46 48 57 58 52 47 46 45 44 43 46 48 46
Min/Max Temp 44 60 42 49
Wind Dir S S S S S S S S SE E E S SW W W W NW
Wind (mph) 8 9 6 5 4 4 4 5 3 3 2 2 2 3 4 5 5
Wind Gust (mph) 27 28 26
Precip Prob (%) 10 10 10 10 30 20 40 70 60 70 60 50 80 80 90 90 70
Precip Type T R R R T T T R R R R R R R R
6 Hour QPF 0.00 0.00 0.01 0.12 0.14 0.12 0.18 0.24
12 Hour QPF 0.00 0.13 0.26 0.42
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) 13.0 12.8 12.4 12.3 12.3 12.3 12.3 12.4 12.3 12.1 11.8 11.6 11.3 11.0 10.9 11.1 11.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 100 100 100 100 100 100 100
...Crazy Mountains...
Date Friday 09/18/26 Saturday 09/19/26
Time (LT) 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
6p 9p 12 3a 6a 9a 12 3p 6p 9p 12 3a 6a 9a 12 3p 6p
Cloud Cover BK SC SC SC BK SC BK OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 70 45 45 45 55 40 55 80 95 95 100 95 100 95 95 95 85
Temperature 62 54 53 51 51 53 59 60 54 50 49 48 47 46 46 47 46
Min/Max Temp 49 61 45 48
Wind Dir S SW SW W W W SE E E NE NE NE NE N N NW NW
Wind (mph) 8 6 9 8 6 5 4 5 8 8 6 6 6 6 5 6 5
Wind Gust (mph)
Precip Prob (%) 5 5 0 0 5 10 30 70 60 90 80 80 100 100 100 100 80
Precip Type R R R R R R R R R R R
6 Hour QPF 0.00 0.00 0.00 0.10 0.41 0.40 0.46 0.55
12 Hour QPF 0.00 0.10 0.81 1.01
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) 12.8 12.9 12.5 12.0 12.0 12.0 12.2 12.4 12.4 12.1 11.9 11.7 11.6 11.4 11.3 11.0 11.0
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