Weather Alert in Minnesota
Winter Storm Warning issued March 12 at 4:38AM CDT until March 13 at 7:00AM CDT by NWS Grand Forks ND
AREAS AFFECTED: Kittson; Roseau; East Marshall; Pembina
DESCRIPTION: * WHAT...Snow and widespread blowing snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 50 mph. * WHERE...In Minnesota, East Marshall, Kittson, and Roseau Counties. In North Dakota, Pembina County. * WHEN...From 1 PM this afternoon to 7 AM CDT Friday. * IMPACTS...Travel could be very difficult. Widespread blowing snow, frequently reducing visibility below a half mile, will make travel dangerous, especially in open country. The hazardous conditions could impact the Thursday evening and Friday morning commutes.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
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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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