Weather Alert in Iowa
Flood Watch issued June 26 at 5:21PM CDT until July 1 at 9:34PM CDT by NWS Des Moines IA
AREAS AFFECTED: Black Hawk
DESCRIPTION: ...The Flood Watch continues for the following rivers in Iowa... Cedar River at Cedar Falls affecting Black Hawk county. Cedar River at Waterloo affecting Black Hawk county. Winnebago River at Mason City affecting Cerro Gordo, Worth and Floyd counties. Raccoon River at Des Moines Fleur Dr affecting Polk County. North Raccoon River near Perry affecting Dallas County. * WHAT...Flooding is possible. * WHERE...The Cedar River at Cedar Falls, or from the West Fork Cedar River to the Cedar Falls-Waterloo city limits. * WHEN...From Saturday morning to late Tuesday evening. * IMPACTS...At 91.2 feet, Water affects portions of Lake St. * ADDITIONAL DETAILS... - At 4:45 PM CDT Thursday the stage was 84.6 feet. - Forecast...Flood stage may be reached Saturday morning. - Flood stage is 89.0 feet.
INSTRUCTION: For the latest waterway observations and forecasts refer to weather.gov/desmoines/water. River forecasts include observed precipitation plus forecast precipitation over the next 24 hours.
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Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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