Weather Alert in Iowa
Flood Warning issued August 19 at 7:59PM 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 continues for the following rivers in Iowa... Cedar River at Cedar Falls affecting Black Hawk County. Shell Rock River at Shell Rock affecting Bremer, Black Hawk and Butler Counties. ...The Flood Warning is extended for the following rivers in Iowa... Winnebago River at Mason City affecting Worth, Floyd and Cerro Gordo 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 early Thursday morning. * IMPACTS...At 11.0 feet, Sandbagging occurs on the dike from 12th St NE to Carolina St. * ADDITIONAL DETAILS... - At 7:15 PM CDT Tuesday the stage was 10.7 feet. - Forecast...The river is expected to fall below flood stage tomorrow evening and continue falling to 7.3 feet Tuesday, August 26. - 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 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
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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