Weather Alerts for Montana
1. Lake Wind Advisory for: Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone; Southwest Phillips
2. Winter Storm Warning for: Absaroka/Beartooth Mountains; Crazy Mountains
3. Winter Storm Warning for: Gallatin and Madison County Mountains and Centennial Mountains
4. Winter Weather Advisory for: Bitterroot/Sapphire Mountains
5. Winter Weather Advisory for: Butte/Blackfoot Region
6. Winter Weather Advisory for: East Glacier Park Region
7. Winter Weather Advisory for: Gallatin Valley
8. Winter Weather Advisory for: Lower Clark Fork Region
9. Winter Weather Advisory for: Madison River Valley
10. Winter Weather Advisory for: Northern Park
11. Winter Weather Advisory for: Paradise Valley
12. Winter Weather Advisory for: Potomac/Seeley Lake Region
13. Winter Weather Advisory for: Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains
14. Winter Weather Advisory for: Red Lodge Foothills; Livingston Area; Beartooth Foothills
15. Winter Weather Advisory for: Southern Big Horn; Sheridan Foothills
16. Winter Weather Advisory for: Southern Rocky Mountain Front; Little Belt and Highwood Mountains; Big Belt, Bridger and Castle Mountains
17. Winter Weather Advisory for: West Glacier Region
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Current U.S. National Radar--Current
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National Weather Forecast--Current
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National Weather Forecast for Tomorrow
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North America Water Vapor (Moisture)
This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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