Weather Alert in Iowa
Flood Warning issued August 20 at 4:51AM CDT until August 21 at 1:00AM CDT by NWS Des Moines IA
AREAS AFFECTED: Cerro Gordo, IA; Floyd, IA; Worth, IA
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Iowa... Cedar River at Cedar Falls affecting Black Hawk County. ...The Flood Warning continues for the following rivers in Iowa... Winnebago River at Mason City affecting Worth, Cerro Gordo and Floyd Counties. Shell Rock River at Shell Rock affecting Black Hawk, Bremer and Butler Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...The Winnebago River at Mason City, or from Beaver Creek near Fertile to the Shell Rock River near Rockford. * WHEN...Until just after midnight tonight. * IMPACTS...At 10.0 feet, Widespread flooding occurs at city parks. Water reaches the underside of the 12th St NE bridge at the piers. * ADDITIONAL DETAILS... - At 4:15 AM CDT Wednesday the stage was 10.5 feet. - Forecast...The river is expected to fall below flood stage this evening and continue falling. - Flood stage is 10.0 feet.
INSTRUCTION: For the latest stream observations and forecasts refer to weather.gov/desmoines/water. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. River forecasts include observed precipitation plus forecast precipitation over the next 24 hours.
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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
Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
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