Weather Alert in Iowa
Flood Warning issued August 20 at 11:34AM CDT until August 22 at 7:40AM CDT by NWS La Crosse WI
AREAS AFFECTED: Clayton, IA
DESCRIPTION: ...The Flood Warning continues for the following rivers in Iowa... Turkey River at Elkader affecting Clayton County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Turkey River at Elkader. * WHEN...Until Friday morning. * IMPACTS...At 12.0 feet, Minor flooding occurs in areas near the river. * ADDITIONAL DETAILS... - At 10:45 AM CDT Wednesday the stage was 13.3 feet. - Bankfull stage is 12.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:45 AM CDT Wednesday was 13.3 feet. - Forecast...The river is currently cresting around 13.3 feet and will begin to fall late tonight. It will then fall below flood stage tomorrow evening. - Flood stage is 12.0 feet. - Flood History...This crest compares to a previous crest of 13.1 feet on 03/23/2007. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional river and weather information is available at www.weather.gov/lacrosse. The next statement will be issued this evening by 1145 PM CDT.
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Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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