Weather Alerts for Montana
1. Winter Storm Watch for: Daniels; Sheridan; Western Roosevelt; Eastern Roosevelt
2. Winter Weather Advisory for: Bitterroot/Sapphire Mountains
3. Winter Weather Advisory for: Butte/Blackfoot Region
4. Winter Weather Advisory for: East Glacier Park Region; Southern Rocky Mountain Front; Upper Blackfoot and MacDonald Pass; Elkhorn and Boulder Mountains; Northwest Beaverhead County
5. Winter Weather Advisory for: Flathead/Mission Valleys
6. Winter Weather Advisory for: Kootenai/Cabinet Region
7. Winter Weather Advisory for: Lower Clark Fork Region
8. Winter Weather Advisory for: Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Southern High Plains; Gates of the Mountains
9. Winter Weather Advisory for: Potomac/Seeley Lake Region
10. Winter Weather Advisory for: Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains
11. Winter Weather Advisory for: West Glacier Region
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North America Water Vapor (Moisture)
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Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
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