Weather Alert in South Dakota
Flood Warning issued June 27 at 1:29AM CDT by NWS Aberdeen SD
AREAS AFFECTED: Grant, SD
DESCRIPTION: ...The Flood Warning continues for the following rivers in South Dakota... North Fork Whetstone River near Milbank affecting Grant 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...North Fork Whetstone River near Milbank. * WHEN...Until further notice. * IMPACTS...At 1056.0 feet, significant agricultural flooding begins. At 1060.0 feet, water reaches the bottom of the bridges on 145th Street and 480th Avenue. * ADDITIONAL DETAILS... - At 1:15 AM CDT Friday the stage was 1058.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 1:15 AM CDT Friday was 1058.1 feet. Recent trends show the river appears to have crested. - Flood stage is 1056.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: Motorists should not attempt to drive around barricades or drive cars through flooded areas. Be especially cautious at night when it is harder to recognize the dangers of flooding. 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 morning at 930 AM CDT.
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Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
Weather Topic: What are Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds
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