Weather Alerts for Montana

Recent Locations: Valencia, CA Woolwine, VA Big Sky, MT

Current Alerts for Big Sky, MT: High Wind Warning

1. Avalanche Warning for: Absaroka/Beartooth Mountains

2. Avalanche Warning for: Bitterroot/Sapphire Mountains; Potomac/Seeley Lake Region

3. Avalanche Warning for: Kootenai/Cabinet Region; West Glacier Region

4. High Wind Warning 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; Helena Valley; Big Belt, Bridger and Castle Mountains

5. High Wind Warning for: East Glacier Park Region; Northern High Plains; Southern Rocky Mountain Front; Southern High Plains

6. High Wind Warning for: Eastern Glacier, Western Toole, and Central Pondera

7. High Wind Warning for: Meagher County Valleys; Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Beaverhead and Western Madison below 6000ft

8. High Wind Warning for: Northern Stillwater; Golden Valley; Judith Gap; Northern Sweet Grass; Melville Foothills; Southern Wheatland

9. 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; Helena Valley; Big Belt, Bridger and Castle Mountains

10. High Wind Watch for: Central and Southeast Phillips; Northern Phillips; Southwest Phillips

11. High Wind Watch for: East Glacier Park Region; Northern High Plains; Southern Rocky Mountain Front; Southern High Plains

12. High Wind Watch for: Eastern Glacier, Western Toole, and Central Pondera

13. High Wind Watch for: Eastern Toole and Liberty; Hill County

14. High Wind Watch for: Northern Blaine County; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine

15. Wind Advisory for: Livingston Area; Beartooth Foothills

16. Winter Storm Warning for: Absaroka/Beartooth Mountains

17. Winter Storm Warning for: Crazy Mountains

18. Winter Weather Advisory for: Butte/Blackfoot Region

19. Winter Weather Advisory for: Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains

20. Winter Weather Advisory for: Southern Rocky Mountain Front; Upper Blackfoot and MacDonald Pass; Elkhorn and Boulder Mountains

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

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)

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle