Weather Alert in South Dakota
Flood Warning issued August 3 at 6:55AM CDT until August 3 at 7:00PM CDT by NWS Sioux Falls SD
AREAS AFFECTED: Beadle, SD
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is occurring. * WHERE...A portion of east central South Dakota, including the following county, Beadle. * WHEN...Until 700 PM CDT Sunday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. County and township roads may be closed or impassable due to flooding. It will take several hours for all the water from these storms to recede. * ADDITIONAL DETAILS... - At 654 AM CDT, emergency management reported heavy rain and flooded roads in the warned area due to overnight thunderstorms. Flooding is ongoing. Between 3 and 9 inches of rain are estimated to have fallen, with the heaviest amounts in rural areas southeast of Hitchcock. - Flooding impacts will continue, but no additional rainfall is expected. - Some locations that will experience flooding include... Hitchcock. Rural areas south of Hitchcock. Rural areas north of Broadland and Yale. - Stay up to date with the latest river observations and forecasts at: www.water.noaa.gov
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
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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
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
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