Weather Alerts for Montana
1. Lake Wind Advisory for: Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone
2. Winter Storm Warning for: Little Belt and Highwood Mountains; Gallatin and Madison County Mountains and Centennial Mountains
3. Winter Storm Watch for: Absaroka/Beartooth Mountains; Crazy Mountains
4. Winter Storm Watch for: Bitterroot/Sapphire Mountains; Butte/Blackfoot Region; Potomac/Seeley Lake Region
5. Winter Storm Watch for: Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains
6. Winter Weather Advisory for: Big Belt, Bridger and Castle Mountains
7. Winter Weather Advisory for: Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Snowy and Judith Mountains
8. Winter Weather Advisory for: East Glacier Park Region
9. Winter Weather Advisory for: Livingston Area; Northern Sweet Grass; Melville Foothills
10. Winter Weather Advisory for: Northern Big Horn; Southern Rosebud; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Southwestern Yellowstone
11. Winter Weather Advisory for: Northern Stillwater; Northern Carbon
12. Winter Weather Advisory for: Red Lodge Foothills; Beartooth Foothills
13. Winter Weather Advisory for: Southern Rocky Mountain Front; Upper Blackfoot and MacDonald Pass; Elkhorn and Boulder Mountains; Northwest Beaverhead County
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North America Water Vapor (Moisture)
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Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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