Weather Alert in South Dakota
Flood Warning issued June 30 at 10:56AM CDT until July 5 at 4:00AM CDT by NWS Sioux Falls SD
AREAS AFFECTED: Brookings, SD; Moody, SD
DESCRIPTION: ...The Flood Warning continues for the following rivers in South Dakota... Big Sioux River near Brookings affecting Moody and Brookings Counties. Sixmile Creek near Brookings affecting Brookings County. Medary Creek near Medary affecting Brookings County. Big Sioux River near Bruce affecting Brookings County. Big Sioux River near Estelline affecting Hamlin and Brookings Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Big Sioux River near Brookings. * WHEN...Until early Saturday morning. * IMPACTS...At 10.5 feet, 473rd Avenue north of the gauge begins to flood. * ADDITIONAL DETAILS... - At 9:45 AM CDT Monday the stage was 9.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:45 AM CDT Monday was 9.5 feet. - Forecast...The river is expected to rise to a crest around 10.4 feet early tomorrow afternoon. It will then fall below flood stage early Friday morning. - Flood stage is 9.0 feet. - 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. Additional forecast information is available at www.weather.gov/siouxfalls. The next statement will be issued by Tuesday afternoon.
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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
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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