Weather Alert in Iowa
Flood Warning issued August 3 at 9:53AM CDT until August 10 at 11:00AM CDT by NWS Quad Cities IA IL
AREAS AFFECTED: Benton, IA; Iowa, IA
DESCRIPTION: ...The Flood Warning continues for the following rivers in Iowa... Cedar River near Conesville affecting Louisa and Muscatine Counties. Iowa River at Marengo affecting Iowa and Benton Counties. Iowa River at Oakville affecting Louisa County. Iowa River at Wapello affecting Louisa County. ...The Flood Warning is extended for the following rivers in Iowa... Cedar River at Cedar Rapids affecting Linn County. * WHAT...Moderate flooding is occurring. * WHERE...Iowa River at Marengo. * WHEN...Until Sunday, August 10. * IMPACTS...At 18.0 feet, Water breaches the mill race dikes near Middle Amana. * ADDITIONAL DETAILS... - At 9:00 AM CDT Sunday the stage was 17.2 feet. - Forecast...The river is expected to rise to a crest of 17.6 feet Tuesday evening. It will then fall below flood stage Sunday, August 10. - Flood stage is 15.0 feet.
INSTRUCTION: Caution is urged when walking near riverbanks. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. The next statement will be issued by Monday morning at 1000 AM CDT.
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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