Weather Alerts for Montana
1. Avalanche Warning for: Kootenai/Cabinet Region
2. Avalanche Warning for: Kootenai/Cabinet Region; West Glacier Region
3. High Wind Warning for: Northern Sweet Grass; Melville Foothills
4. High Wind Warning for: Red Lodge Foothills
5. High Wind Watch for: Cascade County below 5000ft; Judith Basin County and Judith Gap; Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Little Belt and Highwood Mountains; Big Belt, Bridger and Castle Mountains
6. High Wind Watch for: Central and Southeast Phillips; Northern Phillips; Southwest Phillips
7. High Wind Watch for: East Glacier Park Region; Northern High Plains; Southern Rocky Mountain Front; Southern High Plains
8. High Wind Watch for: Eastern Glacier, Western Toole, and Central Pondera
9. High Wind Watch for: Helena Valley
10. High Wind Watch for: Judith Gap; Southern Wheatland
11. High Wind Watch for: Livingston Area; Beartooth Foothills
12. High Wind Watch for: Meagher County Valleys; Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Beaverhead and Western Madison below 6000ft
13. High Wind Watch for: Northern Blaine County
14. High Wind Watch for: Northern Stillwater; Golden Valley
15. High Wind Watch for: Northern Sweet Grass; Melville Foothills
16. High Wind Watch for: Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine
17. Wind Advisory for: Livingston Area; Beartooth Foothills
18. Winter Storm Warning for: Absaroka/Beartooth Mountains
19. Winter Storm Warning for: Crazy Mountains
20. Winter Weather Advisory for: Bitterroot/Sapphire Mountains
21. Winter Weather Advisory for: Butte/Blackfoot Region
22. Winter Weather Advisory for: East Glacier Park Region; Southern Rocky Mountain Front; Upper Blackfoot and MacDonald Pass
23. Winter Weather Advisory for: Little Belt and Highwood Mountains
24. Winter Weather Advisory for: Lower Clark Fork Region
25. Winter Weather Advisory for: Northwest Beaverhead County
26. Winter Weather Advisory for: Potomac/Seeley Lake Region
27. Winter Weather Advisory for: Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains
28. Winter Weather Advisory for: West Glacier Region
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North America Water Vapor (Moisture)
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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