Weather Alerts for Montana

Recent Locations: Summit, UT Blenker, WI Potomac, MT

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: Bighorn Canyon

5. Winter Storm Watch for: Bitterroot/Sapphire Mountains; Butte/Blackfoot Region; Potomac/Seeley Lake Region

6. Winter Storm Watch for: Custer; Fallon; Powder River; Carter

7. Winter Storm Watch for: Dawson; Prairie; Wibaux

8. Winter Storm Watch for: Northern Big Horn; Southwestern Yellowstone

9. Winter Storm Watch for: Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains

10. Winter Storm Watch for: Southern Big Horn

11. Winter Storm Watch for: Southern Rosebud

12. Winter Storm Watch for: Treasure; Northern Rosebud; Northeastern Yellowstone

13. Winter Weather Advisory for: Big Belt, Bridger and Castle Mountains

14. Winter Weather Advisory for: Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Snowy and Judith Mountains

15. Winter Weather Advisory for: East Glacier Park Region

16. Winter Weather Advisory for: Southern Big Horn

17. Winter Weather Advisory for: Southern Rocky Mountain Front; Upper Blackfoot and MacDonald Pass; Elkhorn and Boulder Mountains; Northwest Beaverhead County

18. Winter Weather Advisory for: Southern Rosebud

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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 Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain