Weather Alerts for Montana

Recent Locations: Yellow Spring, WV Trade, TN Dell, MT

Current Alerts for Dell, MT: Winter Weather Advisory

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

3. Winter Storm Warning for: Bears Paw Mountains and Southern Blaine

4. Winter Storm Warning for: Gallatin and Madison County Mountains and Centennial Mountains

5. Winter Weather Advisory for: Bitterroot/Sapphire Mountains

6. Winter Weather Advisory for: Butte/Blackfoot Region

7. Winter Weather Advisory for: Central and Southeast Phillips; Central and Southern Valley; Daniels; Sheridan; Western Roosevelt; Garfield; McCone; Richland; Dawson; Prairie; Northern Phillips; Southwest Phillips; Northern Valley; Eastern Roosevelt

8. Winter Weather Advisory for: Lower Clark Fork Region

9. Winter Weather Advisory for: Missoula/Bitterroot Valleys

10. Winter Weather Advisory for: Northern High Plains; Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Hill County; Northern Blaine County

11. Winter Weather Advisory for: Northern Park; Paradise Valley; Livingston Area

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; Beartooth Foothills

15. Winter Weather Advisory for: Upper Blackfoot and MacDonald Pass; Little Belt and Highwood Mountains; Big Belt, Bridger and Castle Mountains; Elkhorn and Boulder Mountains; Missouri Headwaters; Madison River Valley; Gallatin Valley; Northwest Beaverhead County; Beaverhead and Western Madison below 6000ft; Ruby Mountains and Southern Beaverhead Mountains

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

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 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