Weather Alerts for Montana
1. High Wind Warning for: Bears Paw Mountains and Southern Blaine; Fergus County below 4500ft
2. High Wind Warning for: Crazy Mountains
3. High Wind Warning for: East Glacier Park Region; Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Southern Rocky Mountain Front; Southern High Plains
4. High Wind Warning for: Eastern Toole and Liberty; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Cascade County below 5000ft; Judith Basin County and Judith Gap; Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Little Belt and Highwood Mountains; Helena Valley; Big Belt, Bridger and Castle Mountains; Meagher County Valleys; Elkhorn and Boulder Mountains
5. High Wind Warning for: Judith Gap; Northern Sweet Grass; Melville Foothills; Southern Wheatland
6. High Wind Warning for: Madison River Valley
7. High Wind Warning for: Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft
8. High Wind Warning for: Southwest Phillips
9. Lake Wind Advisory for: Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone
10. Wind Advisory for: Bitterroot/Sapphire Mountains; Butte/Blackfoot Region
11. Wind Advisory for: Kootenai/Cabinet Region; Flathead/Mission Valleys; Lower Clark Fork Region
12. Wind Advisory for: Livingston Area; Beartooth Foothills
13. Wind Advisory for: Missoula/Bitterroot Valleys
14. Wind Advisory for: West Glacier Region; Potomac/Seeley Lake Region
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North America Water Vapor (Moisture)
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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
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