Avalanche Weather Guidance
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
662
FWUS45 KTFX 162201
AVGTFX
Avalanche Weather Guidance
National Weather Service Great Falls MT
400 PM MDT Sun Aug 16 2026
...Glacier National Park/Marias Pass...
Date Monday 08/17/26 Tuesday 08/18/26
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 FW SC SC SC BK BK BK BK SC SC BK SC SC SC SC
Cloud Cover (%) 60 45 20 40 45 50 65 60 60 60 40 40 50 35 30 40 40
Temperature 63 55 51 49 48 53 61 64 64 56 52 50 49 55 63 66 65
Min/Max Temp 48 65 49 66
Wind Dir W SW SW SW SW SW W W W W SW SW SW SW W W W
Wind (mph) 9 4 6 5 5 5 10 12 10 4 5 6 6 5 9 10 9
Wind Gust (mph)
Precip Prob (%) 20 20 10 0 0 10 20 20 20 5 0 0 0 0 10 10 5
Precip Type T R R R R T T R T
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.03 0.06 0.01 0.07
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 11.7 11.5 11.3 11.2 11.1 11.0 11.1 11.4 11.6 11.5 11.5 11.3 11.1 11.0 11.2 11.4 11.5
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 08/17/26 Tuesday 08/18/26
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 FW SC BK OV OV SC BK OV OV BK BK SC SC SC SC
Cloud Cover (%) 50 40 25 50 55 75 75 50 50 70 85 65 60 40 40 40 35
Temperature 65 56 52 49 48 54 63 67 67 58 54 52 50 55 65 67 66
Min/Max Temp 48 68 50 68
Wind Dir W W SW SW SW W W W W W SW SW SW SW W W W
Wind (mph) 10 4 4 5 5 4 9 12 11 4 4 4 5 4 6 8 8
Wind Gust (mph)
Precip Prob (%) 20 10 10 5 0 10 20 10 10 0 0 5 0 0 20 20 5
Precip Type T R R R T T T T
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.02 0.03 0.02 0.07
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.0 11.9 11.8 11.7 11.5 11.3 11.4 11.7 11.9 11.8 11.7 11.6 11.5 11.5 11.7 11.8 11.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Nevada Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 OV BK SC BK OV OV BK BK SC SC SC SC
Cloud Cover (%) 55 50 30 45 40 75 65 45 70 85 90 70 60 40 40 40 35
Temperature 69 59 55 53 51 56 65 70 70 62 59 57 54 57 66 70 69
Min/Max Temp 51 71 54 71
Wind Dir W W SW SW SW SW W W W NW W SW SW SW W W W
Wind (mph) 9 5 4 4 4 3 6 11 10 4 4 4 5 3 6 8 6
Wind Gust (mph)
Precip Prob (%) 20 20 10 5 0 0 10 10 10 0 0 10 5 5 20 20 5
Precip Type T R T R T T
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.00 0.00 0.00 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.05 0.04 0.02 0.06
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.0 12.1 12.0 11.7 11.6 11.7 11.8 11.9 12.3 12.1 11.9 11.7 11.7 11.7 11.7 11.9 12.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Elkhorn/Boulder Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 SC BK BK BK OV OV OV OV BK SC BK BK BK
Cloud Cover (%) 65 60 55 55 45 60 60 65 90 95 85 80 65 40 55 55 50
Temperature 66 56 52 50 49 55 65 68 68 59 56 54 51 56 64 68 67
Min/Max Temp 48 70 51 69
Wind Dir NW SW SW SW SW SW W W NW NW SW SW SW W W W NW
Wind (mph) 8 5 5 5 5 4 5 10 10 4 4 5 5 4 5 6 6
Wind Gust (mph)
Precip Prob (%) 40 20 20 10 0 10 20 20 20 10 5 20 10 10 30 30 30
Precip Type R R R R T T T R R T R
6 Hour QPF 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.02 0.00 0.00 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.08 0.06 0.05 0.11
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.5 12.3 12.1 12.0 12.1 12.2 12.2 12.6 12.7 12.6 12.4 12.4 12.1 11.9 12.1 12.3 12.4
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Big Belt Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 BK BK BK OV OV OV OV OV SC SC SC SC
Cloud Cover (%) 45 60 30 45 35 60 55 60 75 85 100 80 70 45 40 45 40
Temperature 69 60 56 54 52 56 65 70 70 62 59 57 55 58 66 70 69
Min/Max Temp 52 72 54 71
Wind Dir W SW S SW SW SW W W NW N S S SW SW SW W NW
Wind (mph) 9 8 5 5 5 4 6 10 10 4 4 5 5 4 6 6 5
Wind Gust (mph)
Precip Prob (%) 20 20 5 0 0 0 5 10 5 0 0 10 5 5 20 20 20
Precip Type T R R R R T T T
6 Hour QPF 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.01 0.00 0.00 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.08 0.06 0.05 0.08
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.1 12.1 12.0 11.8 11.7 11.9 12.0 12.1 12.4 12.3 12.2 12.0 11.8 11.8 11.8 12.1 12.2
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Little Belt Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 SC SC SC SC BK BK OV OV OV OV OV SC BK BK SC
Cloud Cover (%) 35 70 40 40 45 50 70 55 70 85 100 80 70 50 65 65 50
Temperature 68 58 54 52 50 57 67 69 69 59 56 54 52 58 67 69 67
Min/Max Temp 50 71 51 70
Wind Dir NW SW SW SW SW W W W NW NE S SW SW SW W W NW
Wind (mph) 10 5 5 5 5 4 8 11 9 4 4 4 5 4 6 8 6
Wind Gust (mph) 26
Precip Prob (%) 20 20 10 5 5 10 20 20 10 0 0 0 10 10 50 50 20
Precip Type T T R R T T T R T T
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03
12 Hour QPF 0.00 0.00 0.00 0.03
Low End QPF 0.00 0.00 0.00 0.01
High End QPF 0.05 0.09 0.05 0.17
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.2 12.0 11.9 11.8 11.7 11.6 11.9 12.2 12.3 12.2 12.1 12.0 11.8 11.6 11.9 12.1 12.2
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Highwood Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 BK OV SC BK OV OV BK BK SC SC SC SC
Cloud Cover (%) 45 55 35 35 45 55 75 50 55 70 75 65 55 45 50 50 40
Temperature 69 61 58 56 55 59 66 71 70 62 60 58 56 61 68 72 69
Min/Max Temp 55 72 56 72
Wind Dir NW W SW SW W W W NW NW NE SE S SW SW W W W
Wind (mph) 10 5 5 5 5 4 8 10 8 5 6 5 4 3 5 6 4
Wind Gust (mph)
Precip Prob (%) 20 20 10 5 5 0 10 10 5 0 0 0 0 0 30 30 10
Precip Type T R T 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 0.00 0.00 0.00 0.00
High End QPF 0.05 0.04 0.03 0.13
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.0 12.0 11.8 11.7 11.7 11.5 11.5 11.6 12.2 12.1 12.0 12.0 11.9 11.6 11.5 11.8 11.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Snowy/Judith Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 BK SC SC SC BK OV BK OV OV OV OV BK BK BK BK
Cloud Cover (%) 30 60 55 40 45 45 55 70 65 70 100 80 70 55 65 65 60
Temperature 71 61 57 55 53 62 70 71 71 62 58 56 54 62 70 71 69
Min/Max Temp 53 74 53 73
Wind Dir NW NW SW W W W NW NW NW NE S S SW S W NW W
Wind (mph) 9 5 6 5 5 3 6 6 6 4 4 4 4 3 4 4 4
Wind Gust (mph)
Precip Prob (%) 20 20 10 10 10 10 20 20 20 0 5 0 10 10 50 50 20
Precip Type T R R R T T T R T T
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02
12 Hour QPF 0.00 0.00 0.00 0.02
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.07 0.06 0.04 0.12
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.3 12.2 12.0 11.8 11.6 11.6 11.7 12.2 12.3 12.3 12.1 12.1 12.0 11.7 11.8 12.1 12.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bears Paw Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 SC SC SC BK OV OV OV SC BK BK SC SC SC SC
Cloud Cover (%) 60 50 55 40 40 35 65 70 70 70 40 60 55 35 40 40 40
Temperature 71 60 56 53 51 61 68 72 71 59 56 53 51 61 70 74 72
Min/Max Temp 51 73 50 74
Wind Dir W NW NW W W W W NW NW N SE S S SE S SW W
Wind (mph) 10 5 5 4 4 3 6 9 9 4 4 3 3 2 4 5 4
Wind Gust (mph)
Precip Prob (%) 20 20 20 20 10 10 20 20 20 5 0 0 5 5 20 20 20
Precip Type T R R R R R R T T R T T
6 Hour QPF 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12 Hour QPF 0.02 0.00 0.00 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.05 0.06 0.02 0.10
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 11.5 11.6 11.5 11.3 11.2 11.1 11.2 11.4 11.3 11.4 11.4 11.3 11.3 11.1 11.2 11.5 11.6
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Castle/Crazy Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 SC SC SC BK BK BK OV OV OV OV OV SC BK BK SC
Cloud Cover (%) 45 80 40 45 35 60 60 70 75 85 90 90 75 45 60 60 50
Temperature 69 60 55 52 50 56 66 71 70 62 57 55 52 57 66 70 68
Min/Max Temp 50 72 52 70
Wind Dir W W SW SW SW SW W W W NW S SW SW SW W W W
Wind (mph) 14 10 8 6 6 5 11 17 14 5 5 5 5 5 9 11 10
Wind Gust (mph)
Precip Prob (%) 20 30 10 5 0 10 20 10 10 5 5 5 10 10 40 40 20
Precip Type T R R T R R R T T
6 Hour QPF 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.01
12 Hour QPF 0.03 0.00 0.00 0.01
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.09 0.06 0.07 0.10
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.2 12.2 12.0 11.8 11.8 11.9 12.2 12.4 12.6 12.5 12.5 12.1 12.1 11.9 12.0 12.2 12.3
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Bridger Range...
Date Monday 08/17/26 Tuesday 08/18/26
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 OV SC BK SC BK SC OV OV OV OV OV OV BK SC SC BK
Cloud Cover (%) 55 80 35 55 50 60 45 80 90 90 100 90 85 55 35 45 50
Temperature 68 58 53 51 50 55 66 71 69 60 57 54 52 56 65 70 66
Min/Max Temp 49 71 52 70
Wind Dir NW W S SW SW SW W W NW W S SW SW SW W W W
Wind (mph) 10 11 5 4 4 3 6 12 10 4 4 4 4 3 5 8 6
Wind Gust (mph)
Precip Prob (%) 20 50 5 0 0 0 10 10 10 5 5 20 20 20 20 20 30
Precip Type T R R R R T T R
6 Hour QPF 0.06 0.00 0.00 0.00 0.01 0.00 0.00 0.00
12 Hour QPF 0.06 0.00 0.01 0.00
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.14 0.07 0.08 0.10
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.4 12.5 12.2 12.0 11.9 12.2 12.1 12.2 12.7 12.7 12.7 12.5 12.4 12.1 12.0 12.3 12.4
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 08/17/26 Tuesday 08/18/26
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 BK SC SC SC BK BK BK OV OV OV OV OV BK BK BK BK
Cloud Cover (%) 80 55 45 50 50 55 55 60 85 100 100 90 85 60 65 65 60
Temperature 60 52 48 47 46 52 63 66 63 54 52 50 48 51 61 65 61
Min/Max Temp 46 67 48 66
Wind Dir W SW S S S S W W W SE S S SW S W W W
Wind (mph) 10 5 5 5 5 5 10 13 8 5 5 5 4 4 6 9 6
Wind Gust (mph)
Precip Prob (%) 40 20 5 0 0 5 20 20 30 20 20 20 40 40 50 50 40
Precip Type R R T T R R R R R R R T T
6 Hour QPF 0.01 0.00 0.00 0.00 0.00 0.01 0.01 0.03
12 Hour QPF 0.01 0.00 0.01 0.04
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.06 0.13 0.09 0.15
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.9 12.9 12.6 12.4 12.3 12.2 12.5 13.0 13.2 13.2 13.1 12.9 12.7 12.4 12.5 12.7 12.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Gallatin Range/Hyalite Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 BK BK SC SC BK BK BK OV OV OV OV OV BK BK BK BK
Cloud Cover (%) 80 65 50 45 45 55 65 60 85 100 100 85 85 60 65 65 60
Temperature 63 54 49 48 46 52 65 68 65 56 54 51 49 52 63 66 63
Min/Max Temp 46 68 49 67
Wind Dir W SW S S S SW W W W S S S SW S W W NW
Wind (mph) 8 6 5 6 5 5 9 12 9 5 5 5 5 4 5 8 6
Wind Gust (mph)
Precip Prob (%) 30 20 10 0 0 0 10 10 30 10 10 20 40 40 50 50 40
Precip Type R R T T R R R R R R T R
6 Hour QPF 0.02 0.00 0.00 0.00 0.01 0.01 0.00 0.03
12 Hour QPF 0.02 0.00 0.02 0.03
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.07 0.12 0.09 0.16
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.9 12.8 12.5 12.3 12.2 12.1 12.4 12.8 13.1 13.0 13.0 12.9 12.6 12.3 12.5 12.6 12.7
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Lionhead Range...
Date Monday 08/17/26 Tuesday 08/18/26
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 BK SC BK OV OV OV OV OV BK BK BK BK
Cloud Cover (%) 60 65 45 35 50 55 40 55 80 90 80 85 85 70 60 60 55
Temperature 62 53 49 45 42 52 68 72 67 57 52 48 46 52 65 71 64
Min/Max Temp 41 72 45 71
Wind Dir W S E E SE S SW W NW NE E E E E SW W W
Wind (mph) 9 4 3 3 2 2 8 12 8 3 3 3 3 2 4 8 4
Wind Gust (mph)
Precip Prob (%) 20 10 10 0 0 5 10 10 20 20 20 30 40 40 40 40 30
Precip Type T T T R R R R R R T T
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.04
12 Hour QPF 0.00 0.00 0.01 0.05
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.03 0.07 0.09 0.12
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 13.2 12.9 12.9 12.8 12.4 12.6 12.8 13.2 13.4 13.4 13.2 13.1 12.8 12.6 12.6 12.8 13.1
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Tobacco Root Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 BK SC SC BK OV BK OV OV OV OV OV SC BK BK BK
Cloud Cover (%) 70 50 55 50 45 70 75 60 80 100 100 85 75 50 60 60 55
Temperature 64 54 50 49 48 53 62 67 65 56 54 52 50 54 61 66 62
Min/Max Temp 48 67 50 66
Wind Dir W W NW SW SW SW W W W W SW W NW SW W W NW
Wind (mph) 9 5 6 6 6 6 9 12 10 5 5 5 8 4 6 9 6
Wind Gust (mph)
Precip Prob (%) 50 20 0 0 0 5 20 20 20 10 5 5 20 20 40 40 30
Precip Type T R T T T R R R T T
6 Hour QPF 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.02
12 Hour QPF 0.01 0.00 0.00 0.02
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.06 0.08 0.08 0.13
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.8 12.7 12.4 12.3 12.1 12.0 12.1 12.7 12.9 12.9 12.8 12.7 12.5 12.2 12.2 12.4 12.6
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 08/17/26 Tuesday 08/18/26
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 BK BK BK OV OV OV OV OV BK BK BK BK
Cloud Cover (%) 75 50 40 45 55 65 60 65 85 95 95 85 80 60 60 60 60
Temperature 62 53 50 49 48 54 66 69 66 57 55 52 50 54 64 68 64
Min/Max Temp 47 70 50 69
Wind Dir SW E SE S S S SW W W SE S S W SW W W W
Wind (mph) 11 6 5 5 5 5 9 13 11 5 5 5 5 4 6 10 8
Wind Gust (mph)
Precip Prob (%) 40 20 0 0 0 5 20 20 40 20 20 20 30 30 40 40 30
Precip Type T R T T R R R R R R R T R
6 Hour QPF 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.02
12 Hour QPF 0.01 0.00 0.00 0.02
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.05 0.08 0.06 0.11
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 13.0 12.9 12.7 12.4 12.3 12.3 12.6 13.1 13.2 13.2 13.1 12.9 12.7 12.4 12.5 12.7 12.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Centennial Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 BK SC SC BK BK SC SC OV OV OV OV OV OV BK BK BK
Cloud Cover (%) 75 60 45 40 55 50 45 50 90 95 75 85 80 70 55 55 55
Temperature 62 54 51 49 48 53 65 69 65 57 54 52 50 53 63 67 63
Min/Max Temp 47 69 50 68
Wind Dir NW W NE SW S S SW SW W NE E E NW N SW W W
Wind (mph) 10 5 5 5 4 4 8 12 10 6 5 5 5 4 5 10 6
Wind Gust (mph)
Precip Prob (%) 30 20 5 0 0 5 10 20 20 20 10 10 30 30 40 40 20
Precip Type T R T T T R R R R T T
6 Hour QPF 0.02 0.00 0.00 0.00 0.00 0.00 0.01 0.06
12 Hour QPF 0.02 0.00 0.00 0.07
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.04 0.07 0.07 0.12
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 13.1 13.0 12.9 12.7 12.5 12.6 12.8 13.2 13.5 13.4 13.2 13.1 12.9 12.6 12.6 12.9 13.0
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Anaconda/Highland Ranges...
Date Monday 08/17/26 Tuesday 08/18/26
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 SC SC SC OV BK OV OV OV OV BK SC BK BK BK
Cloud Cover (%) 60 50 50 40 40 45 75 55 85 95 95 75 65 35 60 60 50
Temperature 64 55 51 49 47 52 63 68 67 57 55 52 50 53 63 67 65
Min/Max Temp 47 69 50 68
Wind Dir NW NE E SE S SW SW W NW N N NW SW S SW W W
Wind (mph) 8 4 4 4 4 4 5 10 10 4 3 4 4 3 5 6 6
Wind Gust (mph)
Precip Prob (%) 30 20 5 0 0 5 10 10 20 20 10 40 10 10 40 40 10
Precip Type R R T T T R R R T T
6 Hour QPF 0.01 0.00 0.00 0.00 0.00 0.01 0.00 0.02
12 Hour QPF 0.01 0.00 0.01 0.02
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.04 0.07 0.07 0.09
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.6 12.5 12.4 12.3 12.1 11.9 12.1 12.7 12.9 12.8 12.7 12.5 12.3 12.1 12.1 12.4 12.4
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Pioneer Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 BK OV BK OV OV OV OV BK SC BK BK BK
Cloud Cover (%) 60 50 45 45 50 50 75 55 85 100 90 75 60 35 60 60 60
Temperature 63 54 50 49 47 53 64 68 66 58 55 52 50 53 63 67 64
Min/Max Temp 47 69 50 67
Wind Dir W NE SE S SW SW W W W N S W W W W W NW
Wind (mph) 9 5 5 5 5 5 9 13 10 4 4 4 5 4 6 9 8
Wind Gust (mph)
Precip Prob (%) 40 20 10 0 0 10 20 20 20 20 10 30 10 10 40 40 20
Precip Type T R T T T R R R R R T T
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.02
12 Hour QPF 0.00 0.00 0.01 0.02
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.03 0.08 0.07 0.08
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.7 12.6 12.5 12.3 12.1 12.0 12.2 12.7 13.0 12.9 12.8 12.6 12.3 12.1 12.2 12.4 12.5
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Beaverhead/Tendoy Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 OV BK BK OV OV OV OV BK SC BK BK BK
Cloud Cover (%) 60 55 40 45 55 70 70 60 90 95 85 75 65 45 55 55 60
Temperature 62 53 49 48 47 53 65 69 66 57 54 51 49 53 64 68 64
Min/Max Temp 46 70 49 69
Wind Dir SW E S S SW SW SW W W E SW SW W SW W W NW
Wind (mph) 9 6 5 5 6 5 9 12 10 5 4 4 5 4 6 10 9
Wind Gust (mph)
Precip Prob (%) 30 20 0 0 5 0 10 20 20 20 10 20 10 10 40 40 20
Precip Type T R T T R R R R R R T T
6 Hour QPF 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02
12 Hour QPF 0.00 0.00 0.00 0.02
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.03 0.06 0.05 0.08
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.9 12.9 12.7 12.3 12.2 12.3 12.5 12.9 13.2 13.1 13.0 12.8 12.5 12.3 12.3 12.6 12.8
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 08/17/26 Tuesday 08/18/26
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 OV OV OV OV OV OV OV OV OV OV OV
Cloud Cover (%) 80 85 45 40 40 30 75 75 90 90 100 90 80 70 80 80 70
Temperature 58 49 46 44 43 50 61 63 59 51 48 46 45 48 58 61 57
Min/Max Temp 43 64 44 62
Wind Dir W W SW SW SW SW W W W SW S S S SW W W W
Wind (mph) 11 6 5 5 6 6 14 16 10 5 5 5 4 4 9 11 9
Wind Gust (mph)
Precip Prob (%) 30 20 10 5 0 10 10 40 20 30 5 30 60 60 70 70 50
Precip Type
6 Hour QPF 0.01 0.00 0.00 0.01 0.01 0.02 0.02 0.08
12 Hour QPF 0.01 0.01 0.03 0.10
Low End QPF 0.00 0.00 0.00 0.01
High End QPF 0.06 0.15 0.13 0.24
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.9 12.9 12.7 12.4 12.3 12.3 12.7 13.0 13.2 13.2 13.2 13.0 12.8 12.4 12.7 12.8 12.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Absoraka Mountains Above 6000ft Northeast Facing...
Date Monday 08/17/26 Tuesday 08/18/26
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 OV SC SC SC SC BK OV OV OV OV OV OV BK OV OV BK
Cloud Cover (%) 65 85 45 40 35 30 55 70 90 90 95 90 80 65 75 75 65
Temperature 62 53 51 49 49 55 64 65 63 56 53 51 50 54 62 64 61
Min/Max Temp 49 66 50 64
Wind Dir W SW SW SW SW SW W NW W SW SW SW SW SW NW NW NW
Wind (mph) 10 9 9 10 10 8 12 13 11 8 8 9 9 6 8 9 8
Wind Gust (mph) 32 32 28 27 28 25
Precip Prob (%) 20 20 10 5 5 10 10 30 20 30 5 30 50 50 70 70 50
Precip Type
6 Hour QPF 0.01 0.00 0.00 0.00 0.01 0.01 0.01 0.08
12 Hour QPF 0.01 0.00 0.02 0.09
Low End QPF 0.00 0.00 0.00 0.01
High End QPF 0.08 0.13 0.09 0.23
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.8 12.7 12.6 12.2 12.1 12.2 12.6 13.0 13.1 13.0 13.0 12.9 12.7 12.4 12.6 12.7 12.8
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Absoraka Mountains Above 6000ft West Facing...
Date Monday 08/17/26 Tuesday 08/18/26
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 BK BK OV OV OV OV OV BK BK BK BK
Cloud Cover (%) 75 75 45 45 45 40 60 65 85 95 100 90 85 65 70 70 65
Temperature 62 53 50 47 46 52 65 68 64 56 53 50 48 52 62 66 62
Min/Max Temp 45 69 47 67
Wind Dir W W SW S S SW W W W SW S S S S W W W
Wind (mph) 9 5 4 5 5 5 11 14 10 5 4 5 4 4 6 9 8
Wind Gust (mph) 23 31 32 27 26 29 26
Precip Prob (%) 30 20 10 5 5 5 10 30 30 30 20 30 50 50 50 50 40
Precip Type R R T T R R R R R R R T T
6 Hour QPF 0.01 0.00 0.00 0.00 0.01 0.01 0.01 0.05
12 Hour QPF 0.01 0.00 0.02 0.06
Low End QPF 0.00 0.00 0.00 0.01
High End QPF 0.06 0.12 0.11 0.18
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.9 12.9 12.7 12.5 12.3 12.3 12.6 13.0 13.2 13.2 13.2 13.0 12.8 12.4 12.6 12.8 12.9
Snow Density (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...Crazy Mountains...
Date Monday 08/17/26 Tuesday 08/18/26
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 SC SC SC BK BK OV OV OV OV OV OV BK BK BK BK
Cloud Cover (%) 35 85 45 45 40 60 50 70 85 90 90 85 85 55 65 65 55
Temperature 67 57 53 51 50 57 66 70 68 60 56 54 52 57 65 68 65
Min/Max Temp 50 70 52 68
Wind Dir NW W SW W W W W W W NW SW SW W W W W W
Wind (mph) 16 12 9 9 9 6 10 19 16 6 5 5 6 5 8 10 9
Wind Gust (mph)
Precip Prob (%) 10 40 10 5 0 10 10 10 20 10 10 5 20 20 50 50 40
Precip Type R T R R R T R
6 Hour QPF 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.01
12 Hour QPF 0.05 0.00 0.00 0.01
Low End QPF 0.00 0.00 0.00 0.00
High End QPF 0.11 0.07 0.06 0.11
6 Hour Snow 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12 Hour Snow 0.0 0.0 0.0 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 0.0 0.0 0.0
Snow Level (kft) 12.3 12.4 12.1 11.8 11.9 12.0 12.2 12.4 12.7 12.7 12.6 12.3 12.3 12.1 12.2 12.3 12.4
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