Weather Alert in Montana
High Wind Warning issued March 12 at 9:19AM MDT until March 12 at 9:00PM MDT by NWS Billings MT
AREAS AFFECTED: Northern Stillwater; Golden Valley; Judith Gap; Northern Sweet Grass; Melville Foothills; Southern Wheatland
DESCRIPTION: * WHAT...West wind gusts of 60 to 80 mph occurring. Locally higher gusts are possible. * WHERE...Portions of central and south central Montana. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Strong to dangerous crosswinds will make travel difficult along Highway 191 from Big Timber through Judith Gap, and Highway 12 from Harlowton to Lavina. Damaging winds could blow down trees and power lines. Power outages are possible. Any sparked fires in dry grasses will spread rapidly.
INSTRUCTION: People are urged to secure loose objects that could be blown around or damaged by the wind. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution and consider postponing travel until winds subside, or take an alternate route. Please avoid activities that could spark fires.
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Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - 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
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