Weather Alert in South Dakota
Winter Weather Advisory issued March 14 at 10:38PM MDT until March 15 at 12:00PM MDT by NWS Rapid City SD
AREAS AFFECTED: Rapid City; Custer Co Plains; Pennington Co Plains; Northern Oglala Lakota; Southern Oglala Lakota
DESCRIPTION: * WHAT...Snow and widespread blowing snow. Additional snow accumulations between 1 and 3 inches. Winds gusting as high as 55 mph. * WHERE...Custer Co Plains, Northern Oglala Lakota, Pennington Co Plains, Rapid City, and Southern Oglala Lakota. * WHEN...Until noon MDT Sunday. * IMPACTS...Plan on slippery road conditions. Falling and blowing snow, frequently reducing visibility below a half mile, will make travel dangerous, especially in open country. Strong winds could cause tree damage.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
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North America Water Vapor (Moisture)
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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
Weather Topic: What are Stratus Clouds?
Home - Education - Cloud Types - Stratus Clouds
Next Topic: Wall Clouds
Stratus clouds are similar to altostratus clouds, but form at a
lower altitude and are identified by their fog-like appearance, lacking the
distinguishing features of most clouds.
Stratus clouds are wider than most clouds, and their base has a smooth, uniform
look which is lighter in color than a nimbostratus cloud.
The presence of a stratus cloud indicates the possibility of minor precipitation,
such as drizzle, but heavier precipitation does not typically arrive in the form
of a stratus cloud.
Next Topic: Wall Clouds
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