Weather Alert in South Dakota
Winter Storm Watch issued March 12 at 9:46PM MDT until March 15 at 9:00AM MDT by NWS Rapid City SD
AREAS AFFECTED: Northern Black Hills; Northern Foothills; Wyoming Black Hills
DESCRIPTION: * WHAT...Heavy snow and patchy blowing snow possible. Total snow accumulations up to 8 inches possible. Winds could gust as high as 35 mph. * WHERE...In South Dakota, Northern Foothills and Northern Black Hills. In Wyoming, Wyoming Black Hills. * WHEN...From Saturday evening through Sunday morning. * IMPACTS...Plan on slippery road conditions. The combination of falling snow and winds may lead to periods of blowing snow that may briefly reduce visibility.
INSTRUCTION: Monitor the latest forecasts for updates on this situation.
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Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
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
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