Weather Alert in South Dakota
Winter Weather Advisory issued February 18 at 1:33AM MST until February 19 at 5:00PM MST by NWS Rapid City SD
AREAS AFFECTED: Northern Black Hills; Northern Foothills; Southern Foothills; Central Black Hills; Southern Black Hills; Eastern Fall River; Southern Oglala Lakota; Wyoming Black Hills
DESCRIPTION: * WHAT...Snow and patchy blowing snow expected. Total snow accumulations between 3 and 6 inches. Winds gusting as high as 35 mph. * WHERE...Portions of northwestern, southwestern, and the Black Hills of South Dakota and the Black Hills of Wyoming. * WHEN...From 11 PM this evening to 5 PM MST Thursday. * IMPACTS...Plan on slippery road conditions. The combination of falling snow and winds will 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 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 are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
Weather Topic: What is Drizzle?
Home - Education - Precipitation - Drizzle
Next Topic: Evaporation
Drizzle is precipitation in the form of water droplets which are
smaller than raindrops.
Drizzle is characterized by fine, gently falling droplets and typically does not
impact human habitation in a negative way. The exception to this is freezing drizzle,
a condition where drizzle freezes immediately upon reaching earth's surface.
Freezing drizzle is still less dangerous than freezing rain, but can
potentially result in hazardous road conditions.
Next Topic: Evaporation
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