Weather Alert in South Dakota
Flood Warning issued August 22 at 2:57PM CDT by NWS Aberdeen SD
AREAS AFFECTED: Codington, SD
DESCRIPTION: ...Observed flooding changed from Minor to Moderate severity for the following rivers in South Dakota... Big Sioux River Below Watertown affecting Codington County. .For sites with a river forecast, the forecast includes precipitation through the next 24 hours. Any future precipitation could affect the forecasts. * WHAT...Moderate flooding is occurring. * WHERE...Big Sioux River below Watertown. * WHEN...Until further notice. * IMPACTS...At 11.7 feet, Water goes over the low spot on the road 300 feet east of the gauging location * ADDITIONAL DETAILS... - At 2:45 PM CDT Friday the stage was 11.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 2:45 PM CDT Friday was 11.5 feet. - Flood stage is 11.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov/abr. The next statement will be issued by Saturday evening at 1100 PM CDT.
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Weather Topic: What is Snow?
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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.
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Weather Topic: What are Stratus Clouds?
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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.
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