Avalanche Weather Guidance
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
142
FWUS45 KTFX 182201
AVGTFX
Avalanche Weather Guidance
National Weather Service Great Falls MT
400 PM MDT Fri Sep 18 2026
...Glacier National Park/Marias Pass...
Date Saturday 09/19/26 Sunday 09/20/26
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 SC FW SC SC SC FW FW FW CL CL CL
Cloud Cover (%) 55 60 65 65 50 35 35 20 30 30 25 25 15 10 0 5 5
Temperature 57 49 47 45 44 46 55 58 57 48 46 45 44 48 59 62 60
Min/Max Temp 44 59 44 62
Wind Dir NE NE E E E E SE SE SE S SW SW SW SW W W SW
Wind (mph) 6 4 4 3 3 4 6 8 8 6 8 8 8 9 6 6 6
Wind Gust (mph) 24
Precip Prob (%) 5 5 0 0 0 0 5 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) 10.7 10.4 10.3 10.0 9.6 9.4 9.4 10.0 10.3 10.3 10.2 10.0 9.8 9.6 9.7 10.4 10.6
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bob Marshall/Scapegoat Wilderness...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV BK OV BK SC SC SC FW CL FW FW
Cloud Cover (%) 85 90 85 85 95 85 75 65 70 60 45 40 30 15 5 5 10
Temperature 56 50 48 47 46 46 51 54 54 47 45 43 42 46 59 62 60
Min/Max Temp 45 55 42 62
Wind Dir NE NE NE NE NE NE NE E E SE SW W W W W SW SW
Wind (mph) 6 5 5 4 5 5 6 6 5 3 4 4 4 4 4 5 4
Wind Gust (mph)
Precip Prob (%) 30 30 20 20 30 20 20 10 5 0 0 0 0 0 0 0 0
Precip Type R R R R R R R R
6 Hour QPF 0.04 0.05 0.06 0.02 0.00 0.00 0.00 0.00
12 Hour QPF 0.09 0.08 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) 11.3 10.9 10.6 10.6 10.4 10.2 9.8 10.1 10.0 10.1 9.8 9.6 9.5 9.3 9.7 10.6 10.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Nevada Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV BK BK SC FW FW FW FW
Cloud Cover (%) 90 95 95 95 95 90 90 90 85 70 55 55 50 25 10 15 15
Temperature 58 54 53 52 50 48 49 53 53 48 47 45 44 46 58 63 61
Min/Max Temp 47 54 44 63
Wind Dir NE NE NE NE N NE NE NE NE NE W W SW SW SW SW SW
Wind (mph) 9 6 6 6 8 8 8 6 5 3 3 3 3 4 3 4 4
Wind Gust (mph)
Precip Prob (%) 40 50 60 80 80 60 40 30 20 5 10 5 0 0 0 0 0
Precip Type T R R R R R R R R
6 Hour QPF 0.27 0.26 0.32 0.05 0.01 0.00 0.00 0.00
12 Hour QPF 0.53 0.37 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) 11.3 11.1 11.1 11.1 11.0 10.6 10.2 10.2 10.0 10.0 9.7 9.5 9.7 9.7 9.8 10.4 10.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Elkhorn/Boulder Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV BK BK SC SC SC FW
Cloud Cover (%) 95 95 95 95 100 95 90 95 90 80 70 65 60 45 30 35 25
Temperature 55 49 49 48 47 46 46 47 48 46 45 43 42 44 55 59 57
Min/Max Temp 45 49 41 59
Wind Dir N N NE NE N N NE NE N N NW NW W W W NW SW
Wind (mph) 8 8 6 6 8 9 8 6 5 4 3 3 3 4 4 5 4
Wind Gust (mph)
Precip Prob (%) 90 90 90 90 90 90 90 80 50 30 20 20 5 5 0 0 0
Precip Type R R R R R R R R R R R R
6 Hour QPF 0.45 0.61 0.41 0.18 0.06 0.01 0.00 0.00
12 Hour QPF 1.06 0.59 0.07 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 11.7 11.5 11.4 11.2 10.9 10.6 10.6 10.5 10.4 10.1 10.2 10.3 10.2 10.5 10.9 11.0
Snow Density (%) 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 0
...Big Belt Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV BK SC SC SC FW
Cloud Cover (%) 90 95 95 95 95 95 90 90 90 80 80 75 65 50 30 30 20
Temperature 59 54 53 52 51 49 49 51 51 49 48 46 46 47 55 60 60
Min/Max Temp 48 53 45 61
Wind Dir NE NE NE NE N N N NE NE NE NW SW SW SW SW W SW
Wind (mph) 10 8 6 6 6 8 6 6 4 4 3 3 3 4 4 4 3
Wind Gust (mph)
Precip Prob (%) 50 80 70 90 90 90 70 50 30 20 20 10 5 5 0 0 0
Precip Type T R R R R R R R R R R R
6 Hour QPF 0.43 0.32 0.49 0.16 0.07 0.02 0.00 0.00
12 Hour QPF 0.75 0.65 0.09 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 11.5 11.5 11.4 11.2 10.7 10.3 10.3 10.3 10.1 10.4 10.4 10.4 10.3 10.3 10.6 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 Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV BK SC SC SC
Cloud Cover (%) 90 95 95 95 95 95 90 90 95 95 90 85 75 60 50 40 25
Temperature 59 53 52 50 49 48 48 50 50 47 46 44 44 47 55 59 58
Min/Max Temp 47 51 44 60
Wind Dir NE E E NE N NE NE NE NE NE SE SW SW SW NW N NE
Wind (mph) 8 5 3 3 4 6 8 8 5 4 3 3 2 3 4 5 4
Wind Gust (mph)
Precip Prob (%) 50 60 60 80 90 80 70 60 50 50 40 30 20 20 10 10 0
Precip Type T R R R R R R R R R R R R R R R
6 Hour QPF 0.36 0.24 0.31 0.27 0.17 0.05 0.00 0.00
12 Hour QPF 0.60 0.58 0.22 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 11.4 11.4 11.0 10.6 9.9 10.1 10.4 10.4 10.6 10.6 10.6 10.6 10.7 10.9 10.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Highwood Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV SC SC SC FW
Cloud Cover (%) 80 95 95 95 95 95 90 90 95 90 75 75 70 45 30 25 20
Temperature 63 57 55 54 52 51 53 55 55 51 49 48 48 50 57 61 60
Min/Max Temp 51 56 48 62
Wind Dir NE NE E E NE NE NE NE NE SE SE SE S S SE E E
Wind (mph) 8 6 5 6 5 5 6 6 5 6 6 5 4 4 3 4 6
Wind Gust (mph)
Precip Prob (%) 10 20 20 50 20 30 30 20 20 20 20 20 5 5 0 0 0
Precip Type T R R R R R R R R R R R
6 Hour QPF 0.01 0.15 0.07 0.06 0.06 0.02 0.00 0.00
12 Hour QPF 0.16 0.13 0.08 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) 11.1 11.0 11.3 10.9 10.6 9.7 9.3 9.6 10.0 10.0 10.2 10.3 10.3 10.3 10.3 10.1 10.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Snowy/Judith Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV OV OV OV BK
Cloud Cover (%) 85 95 95 100 100 95 95 95 100 95 95 95 90 90 80 75 60
Temperature 64 57 55 53 51 50 50 52 52 50 49 49 48 48 53 56 56
Min/Max Temp 49 53 46 57
Wind Dir NE NE NE NE NE N N N N N NE N N N NE NE E
Wind (mph) 8 6 6 6 8 9 10 8 8 8 5 5 4 4 4 5 5
Wind Gust (mph)
Precip Prob (%) 40 40 40 80 80 90 80 70 70 70 70 70 60 60 50 50 10
Precip Type T R R R R R R R R R R R R R R R
6 Hour QPF 0.10 0.24 0.44 0.63 0.44 0.16 0.03 0.02
12 Hour QPF 0.34 1.07 0.60 0.05
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 11.7 11.7 11.7 11.3 10.5 10.2 10.7 10.7 10.8 10.9 10.9 10.9 10.9 11.0 11.0 11.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bears Paw Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV BK SC SC SC
Cloud Cover (%) 70 85 85 85 95 90 90 90 100 85 80 80 75 60 50 45 30
Temperature 64 56 53 51 49 52 57 59 57 50 48 47 47 51 59 62 59
Min/Max Temp 48 59 46 62
Wind Dir NE NE E E NE E E E E E E E SE SE SE SE SE
Wind (mph) 9 10 10 8 8 9 11 9 8 5 5 3 3 3 5 6 8
Wind Gust (mph)
Precip Prob (%) 0 0 5 0 0 0 0 10 5 5 10 30 5 5 5 5 0
Precip Type R R
6 Hour QPF 0.00 0.00 0.01 0.04 0.04 0.03 0.00 0.00
12 Hour QPF 0.00 0.05 0.07 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) 11.1 10.6 10.4 10.1 9.6 9.3 8.9 9.7 9.3 9.5 9.8 9.9 10.0 10.0 10.2 10.1 10.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Castle/Crazy Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV OV BK BK SC
Cloud Cover (%) 95 95 95 95 100 95 95 90 95 90 95 95 85 75 60 60 50
Temperature 58 52 52 51 50 48 48 48 48 47 47 46 46 46 53 57 57
Min/Max Temp 47 50 45 58
Wind Dir E NE E NE NE NE NE NE NE NE NE NW W W W W SW
Wind (mph) 9 9 8 8 8 9 9 8 5 5 4 3 4 4 4 5 4
Wind Gust (mph)
Precip Prob (%) 80 90 90 90 100 90 90 70 80 50 50 40 20 20 10 10 5
Precip Type R R R R R R R R R R R R R R R R
6 Hour QPF 0.40 0.47 1.04 0.36 0.24 0.08 0.01 0.00
12 Hour QPF 0.87 1.40 0.32 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) 12.3 12.1 11.9 11.7 11.4 10.9 10.5 10.6 10.7 10.6 10.9 10.8 10.8 10.8 10.9 11.2 11.2
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bridger Range...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV OV BK BK SC
Cloud Cover (%) 95 95 95 95 95 95 95 85 95 85 90 95 85 80 60 55 40
Temperature 57 51 51 51 49 48 48 48 48 47 47 46 45 45 51 56 56
Min/Max Temp 47 50 44 57
Wind Dir SE E E NE N N N N N NE N W W W W W W
Wind (mph) 8 8 6 6 6 6 6 6 4 4 3 2 2 3 3 3 2
Wind Gust (mph)
Precip Prob (%) 80 90 90 90 100 90 90 70 80 50 50 40 20 20 5 5 5
Precip Type R R R R R R R R R R R R R R
6 Hour QPF 0.30 0.47 0.43 0.25 0.15 0.08 0.00 0.00
12 Hour QPF 0.77 0.68 0.23 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) 12.4 12.1 12.0 11.8 11.3 11.0 10.8 10.7 10.8 10.7 10.8 10.8 10.7 10.7 10.8 11.1 11.2
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Madison Range/Spanish Peaks...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV OV BK BK SC
Cloud Cover (%) 90 95 90 85 80 90 85 90 95 90 90 95 85 80 60 60 40
Temperature 50 46 45 45 43 42 44 45 44 43 42 42 41 40 48 52 51
Min/Max Temp 41 47 40 52
Wind Dir S S SE S S SW NW NW N N NW NW NW W W NW NW
Wind (mph) 5 4 3 3 3 3 4 6 5 4 3 2 2 2 3 5 5
Wind Gust (mph)
Precip Prob (%) 60 80 60 50 50 80 70 80 70 30 30 30 20 20 20 20 0
Precip Type R R R R R R R R R R R R R R R R
6 Hour QPF 0.26 0.10 0.13 0.23 0.10 0.04 0.00 0.00
12 Hour QPF 0.36 0.36 0.14 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) 12.0 11.9 11.7 11.3 11.0 10.8 10.7 10.9 10.8 10.7 10.6 10.6 10.5 10.5 10.8 11.3 11.4
Snow Density (%) 0 0 0 100 100 50 50 100 50 50 50 50 50 50 100 100 0
...Gallatin Range/Hyalite Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV OV BK BK SC
Cloud Cover (%) 90 95 90 85 85 90 90 90 95 90 90 90 90 85 65 65 45
Temperature 52 48 47 46 45 43 45 46 45 44 44 43 42 41 49 53 52
Min/Max Temp 42 48 41 53
Wind Dir SE SE E S S W N N N NW NW W W W NW NW NW
Wind (mph) 5 5 3 2 2 3 4 5 5 4 2 2 2 3 3 5 4
Wind Gust (mph)
Precip Prob (%) 50 80 70 70 70 90 90 80 80 50 50 40 30 30 30 30 0
Precip Type T R R R R R R R R R R R R R R R
6 Hour QPF 0.26 0.15 0.24 0.33 0.15 0.07 0.00 0.00
12 Hour QPF 0.41 0.57 0.22 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) 12.2 12.0 11.8 11.5 11.2 11.0 10.8 10.9 10.8 10.7 10.6 10.6 10.6 10.6 10.8 11.3 11.3
Snow Density (%) 0 0 0 0 100 100 100 100 100 50 50 50 50 50 100 0 0
...Lionhead Range...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV BK BK OV OV OV OV OV OV BK BK SC
Cloud Cover (%) 90 95 90 90 80 80 70 65 75 90 85 85 85 75 65 60 50
Temperature 52 46 45 44 42 43 48 50 48 43 42 40 39 41 52 56 55
Min/Max Temp 40 51 38 57
Wind Dir S S S S SW S SW SW SW SW NW N SW W W W SW
Wind (mph) 5 3 3 3 2 4 5 5 4 3 1 0 0 1 1 2 1
Wind Gust (mph)
Precip Prob (%) 90 50 50 40 40 60 40 40 50 30 20 20 10 10 20 20 5
Precip Type R R R R R R R T R R R R R R
6 Hour QPF 0.25 0.08 0.05 0.08 0.04 0.04 0.00 0.00
12 Hour QPF 0.33 0.13 0.08 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) 12.2 11.8 11.5 11.2 11.0 10.7 10.3 10.6 10.7 10.7 10.5 10.5 10.5 10.4 10.7 11.4 11.6
Snow Density (%) 0 0 0 0 0 100 100 0 100 100 100 100 100 100 100 0 0
...Tobacco Root Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV BK SC SC SC
Cloud Cover (%) 95 95 95 95 90 95 95 95 90 90 85 85 75 60 45 40 30
Temperature 51 47 47 47 45 44 44 45 45 44 43 42 41 42 48 53 53
Min/Max Temp 43 47 41 54
Wind Dir N NE NE E SW NW N N NE NE N NW W W W NW N
Wind (mph) 6 6 5 4 4 4 5 6 6 4 3 2 3 3 4 4 3
Wind Gust (mph)
Precip Prob (%) 90 90 80 90 80 90 100 90 60 30 30 30 10 10 10 10 0
Precip Type R R R R R R R R R R R R
6 Hour QPF 0.46 0.33 0.31 0.28 0.09 0.03 0.00 0.00
12 Hour QPF 0.79 0.59 0.12 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) 12.2 11.9 11.7 11.4 11.2 10.9 10.8 10.8 10.8 10.7 10.5 10.3 10.5 10.5 10.7 11.1 11.2
Snow Density (%) 0 0 0 100 100 100 100 100 100 100 100 100 100 100 100 0 0
...Snowcrest/Gravelly/Ruby/Blacktail Ranges...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV BK SC SC SC
Cloud Cover (%) 90 95 90 85 80 85 80 85 85 85 85 90 80 65 45 35 30
Temperature 52 47 46 46 44 44 46 48 47 45 44 43 42 43 51 55 55
Min/Max Temp 43 50 41 56
Wind Dir SE SE E SE SE S NW NW N N N N NW NW NW NW NW
Wind (mph) 8 6 4 4 4 4 5 6 8 6 5 4 3 3 4 6 5
Wind Gust (mph)
Precip Prob (%) 80 70 80 60 60 70 60 70 50 30 30 10 10 10 5 5 0
Precip Type R R R R R R R R R R R R
6 Hour QPF 0.20 0.12 0.09 0.19 0.07 0.02 0.00 0.00
12 Hour QPF 0.32 0.28 0.09 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) 12.0 11.6 11.5 11.2 10.8 10.5 10.5 10.8 10.7 10.7 10.6 10.5 10.5 10.5 10.7 11.2 11.3
Snow Density (%) 0 0 0 100 100 100 100 100 100 100 100 100 100 100 100 0 0
...Centennial Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV BK SC SC SC
Cloud Cover (%) 95 95 85 85 85 85 75 70 90 85 80 85 75 60 50 50 45
Temperature 51 47 47 46 44 43 45 48 47 44 44 43 42 42 50 54 53
Min/Max Temp 42 49 41 55
Wind Dir S S SE SE S SW S W NW N N N NW NW W W W
Wind (mph) 8 6 4 4 4 5 5 5 4 5 4 4 4 4 4 5 4
Wind Gust (mph)
Precip Prob (%) 90 50 70 60 50 60 30 60 40 20 20 10 5 5 10 10 0
Precip Type R R R R R R R R R R R
6 Hour QPF 0.19 0.07 0.07 0.07 0.04 0.01 0.00 0.00
12 Hour QPF 0.26 0.14 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 0.0 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) 12.0 11.6 11.4 11.1 10.8 10.4 10.2 10.5 10.7 10.7 10.6 10.5 10.5 10.4 10.7 11.4 11.6
Snow Density (%) 0 0 0 100 100 100 100 100 100 100 100 100 100 100 100 0 0
...Anaconda/Highland Ranges...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV BK BK BK BK SC FW SC FW
Cloud Cover (%) 100 95 95 95 95 95 95 90 85 70 60 60 50 35 20 25 20
Temperature 51 47 47 46 45 44 46 47 48 45 44 42 41 42 53 58 57
Min/Max Temp 44 49 40 59
Wind Dir N N N N N NE NE N NE N NE NE SW SW SW W W
Wind (mph) 6 6 6 6 5 4 5 5 5 4 4 2 2 2 3 4 4
Wind Gust (mph)
Precip Prob (%) 100 90 80 90 90 80 80 80 30 20 10 5 0 0 0 0 0
Precip Type R R R R R R R R R R R R
6 Hour QPF 0.34 0.39 0.27 0.14 0.02 0.00 0.00 0.00
12 Hour QPF 0.73 0.41 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) 11.6 11.4 11.4 11.2 11.0 10.8 10.8 10.9 10.9 10.7 10.3 10.2 10.2 10.1 10.3 11.0 11.2
Snow Density (%) 0 0 0 0 100 100 100 100 0 0 0 0 0 0 0 0 0
...Pioneer Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV BK BK BK SC SC SC SC
Cloud Cover (%) 100 95 95 95 90 90 95 95 90 80 70 65 55 40 30 35 30
Temperature 50 46 46 45 44 43 45 46 46 44 43 41 39 41 53 57 56
Min/Max Temp 42 48 39 57
Wind Dir N NE NE N NE N N N N N NE NW W W W NW NW
Wind (mph) 6 6 6 5 4 5 5 6 5 4 3 3 3 3 3 5 4
Wind Gust (mph)
Precip Prob (%) 100 90 90 90 80 80 90 90 40 20 20 20 0 0 5 5 0
Precip Type R R R R R R R R R R R R
6 Hour QPF 0.41 0.44 0.20 0.15 0.04 0.00 0.00 0.00
12 Hour QPF 0.85 0.35 0.04 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 11.5 11.4 11.1 10.9 10.7 10.7 10.9 10.8 10.7 10.5 10.2 10.2 10.2 10.6 11.2 11.4
Snow Density (%) 0 100 100 100 100 100 100 100 100 100 100 100 100 100 0 0 0
...Beaverhead/Tendoy Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV BK BK SC SC SC FW
Cloud Cover (%) 95 95 90 90 90 90 85 85 90 80 70 70 60 50 30 30 25
Temperature 49 44 44 44 43 43 45 48 47 44 43 41 40 42 51 56 55
Min/Max Temp 41 49 39 56
Wind Dir NE NE N N NE N NE N N N N NW W W NW NW NW
Wind (mph) 8 6 6 5 5 5 5 6 6 6 5 4 3 3 4 5 4
Wind Gust (mph)
Precip Prob (%) 100 80 80 70 80 60 40 70 50 30 20 10 0 0 5 5 0
Precip Type R R R R R R R R R R R R
6 Hour QPF 0.37 0.24 0.12 0.11 0.04 0.01 0.00 0.00
12 Hour QPF 0.61 0.23 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 0.0 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 11.3 11.2 11.0 10.7 10.4 10.5 10.8 10.9 10.8 10.6 10.4 10.3 10.3 10.6 11.2 11.4
Snow Density (%) 0 100 100 100 100 50 100 100 100 100 100 100 100 100 100 0 0
...Absoraka-Beartooth/Cooke City Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 95 95 90 90 85 85 80 85 90 85 90 95 95 90 80 85 70
Temperature 48 43 43 41 40 40 42 43 42 39 38 38 37 38 44 47 46
Min/Max Temp 39 45 36 48
Wind Dir SE E E SE SW SW NW NW N N NW N NW W W NW NW
Wind (mph) 5 5 4 2 3 4 5 6 6 5 4 3 2 3 3 5 4
Wind Gust (mph)
Precip Prob (%) 90 90 60 70 80 80 70 80 90 40 30 60 50 50 60 60 5
Precip Type
6 Hour QPF 0.17 0.08 0.17 0.24 0.17 0.11 0.01 0.02
12 Hour QPF 0.25 0.41 0.28 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) 12.4 12.2 12.1 11.9 11.4 11.1 11.2 11.1 10.9 10.6 10.5 10.5 10.5 10.6 11.0 11.5 11.6
Snow Density (%) 0 0 100 100 100 50 50 50 50 33 33 33 33 33 50 100 100
...Absoraka Mountains Above 6000ft Northeast Facing...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 95 95 95 95 90 95 90 90 95 90 90 95 90 90 80 85 70
Temperature 52 47 47 46 45 43 44 44 43 42 42 42 41 41 45 48 47
Min/Max Temp 42 46 40 48
Wind Dir S S E S SW W N N N NW NW NW W W NW NW NW
Wind (mph) 6 5 4 3 4 5 6 8 6 6 4 4 3 4 4 6 5
Wind Gust (mph)
Precip Prob (%) 70 90 90 90 90 90 90 90 90 70 60 60 60 60 60 60 10
Precip Type
6 Hour QPF 0.24 0.20 0.27 0.38 0.26 0.13 0.05 0.04
12 Hour QPF 0.44 0.65 0.39 0.09
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) 12.4 12.3 12.2 12.0 11.6 11.2 11.2 11.0 10.8 10.6 10.7 10.7 10.7 10.7 10.9 11.3 11.4
Snow Density (%) 0 0 100 100 100 100 50 50 50 50 50 50 50 50 50 100 100
...Absoraka Mountains Above 6000ft West Facing...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV OV OV OV BK
Cloud Cover (%) 90 95 90 85 80 85 80 90 90 90 90 95 90 85 70 75 60
Temperature 52 47 46 45 43 43 45 47 45 43 42 41 40 41 48 52 51
Min/Max Temp 41 48 39 53
Wind Dir SE SE SE S SW SW NW NW N NW NW NW NW W NW NW NW
Wind (mph) 5 4 3 2 3 3 5 6 5 4 3 2 2 2 3 5 4
Wind Gust (mph)
Precip Prob (%) 80 80 50 60 50 70 60 80 80 40 30 40 30 30 30 30 5
Precip Type T R R R R R R R R R R R R R R R
6 Hour QPF 0.21 0.09 0.14 0.23 0.12 0.06 0.00 0.01
12 Hour QPF 0.30 0.37 0.18 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) 12.2 12.1 11.9 11.6 11.2 11.0 10.9 10.9 10.8 10.7 10.6 10.6 10.5 10.5 10.8 11.4 11.5
Snow Density (%) 0 0 0 0 100 100 100 100 100 50 50 50 50 50 100 0 0
...Crazy Mountains...
Date Saturday 09/19/26 Sunday 09/20/26
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 OV OV OV OV OV OV OV OV OV OV OV OV BK OV BK
Cloud Cover (%) 95 95 95 100 100 95 100 90 95 95 95 95 90 85 70 70 60
Temperature 55 51 50 50 48 46 45 46 46 45 45 45 44 44 49 53 53
Min/Max Temp 45 48 43 53
Wind Dir E E NE NE N N N N N N N NW NW W W NW SW
Wind (mph) 9 9 8 8 8 9 8 8 6 6 4 4 4 4 4 5 4
Wind Gust (mph)
Precip Prob (%) 80 90 90 100 100 90 100 80 90 90 80 40 50 50 30 30 5
Precip Type R R R R R R R R R R R R R R R R
6 Hour QPF 0.55 0.66 1.10 0.40 0.33 0.15 0.02 0.01
12 Hour QPF 1.21 1.50 0.48 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) 12.4 12.2 12.0 11.8 11.5 11.1 10.7 10.7 10.8 10.7 10.9 10.9 10.9 10.9 11.0 11.3 11.3
Snow Density (%) 0 0 0 0 0 100 100 100 100 100 100 100 100 100 0 0 0
$$
--- Precip Type Codes ---
CODE TYPE
T Thunderstorms
R Rain
S Snow
I Sleet
Z Freezing Rain