Weather Alert in South Dakota
Winter Storm Watch issued April 2 at 2:23AM CDT until April 4 at 1:00PM CDT by NWS Aberdeen SD
AREAS AFFECTED: Potter; Faulk
DESCRIPTION: * WHAT...For the Winter Weather Advisory, wet snow. Additional snow accumulations up to two inches. For the Winter Storm Watch, heavy mixed precipitation and patchy blowing snow possible. Total snow accumulations between 5 and 8 inches and ice accumulations between one tenth and one quarter of an inch possible. Winds could gust as high as 35 mph. * WHERE...Faulk and Potter Counties. * WHEN...For the Winter Weather Advisory, until 1 PM CDT this afternoon. For the Winter Storm Watch, from late tonight through Saturday afternoon. * IMPACTS...Travel could be very difficult. The combination of falling snow and winds may lead to periods of blowing snow that may briefly reduce visibility. The hazardous conditions could impact the Thursday morning and evening commutes.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. Monitor the latest forecasts for updates on this situation.
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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