Weather Alert in Iowa
Flood Warning issued August 1 at 8:09PM CDT until August 3 at 3:00PM CDT by NWS Des Moines IA
AREAS AFFECTED: Poweshiek, IA; Tama, IA
DESCRIPTION: ...The Flood Warning continues for the following rivers in Iowa... Iowa River near Tama Hwy E49 affecting Poweshiek and Tama Counties. Cedar River at Cedar Falls affecting Black Hawk County. Shell Rock River at Shell Rock affecting Black Hawk, Butler and Bremer Counties. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...The Iowa River near Tama Hwy E49, or from Timber Creek near Le Grand to Salt Creek near Belle Plaine. * WHEN...Until Sunday afternoon. * IMPACTS...At 13.6 feet, Water may cover US 30 east of Le Grand. * ADDITIONAL DETAILS... - At 7:00 PM CDT Friday the stage was 13.6 feet. - Forecast...The river is expected to fall below flood stage late Sunday morning and continue falling to 9.6 feet Friday, August 08. - Flood stage is 12.5 feet.
INSTRUCTION: For the latest waterway 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 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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