Weather Alert in Montana
High Wind Watch issued February 22 at 11:28PM MST until February 25 at 11:00PM MST by NWS Great Falls MT
AREAS AFFECTED: Cascade County below 5000ft; Judith Basin County and Judith Gap
DESCRIPTION: * WHAT...West winds 30 to 40 mph with gusts up to 65 mph possible. * WHERE...Cascade County below 5000ft and Judith Basin County and Judith Gap. * WHEN...From late Tuesday night through Wednesday evening. * IMPACTS...Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Another round of strong winds will be possible Thursday and Friday.
INSTRUCTION: Monitor the latest forecasts and warnings for updates.
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North America Water Vapor (Moisture)
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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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