Weather Alert in South Dakota
Flood Warning issued August 22 at 5:00AM CDT by NWS Aberdeen SD
AREAS AFFECTED: Codington, SD
DESCRIPTION: ...The National Weather Service in Aberdeen SD has issued a Flood Warning for the following rivers in South Dakota... Willow Creek near 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...Minor flooding is occurring. * WHERE...Willow Creek near Watertown. * WHEN...From early this morning until further notice. * ADDITIONAL DETAILS... - At 3:00 AM CDT Friday the stage was 12.7 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 AM CDT Friday was 12.8 feet. - Flood stage is 10.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Caution is urged when walking near riverbanks. Be especially cautious at night when it is harder to recognize the dangers of flooding. Additional information is available at www.weather.gov/abr. The next statement will be issued by Saturday afternoon at 100 PM CDT.
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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