Weather Alert in Iowa
Flood Warning issued August 2 at 10:31AM CDT until August 3 at 1:00PM 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 Tama and Poweshiek Counties. Cedar River at Cedar Falls affecting Black Hawk County. Shell Rock River at Shell Rock affecting Bremer, Black Hawk and Butler 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 early tomorrow afternoon. * IMPACTS...At 13.3 feet, Water affects 360th St near the intersection with S Ave...or 1 1/4 miles west of Chelsea. The City of Chelsea is inaccessible from the south. Hwy E49 is down to one lane near the Iowa River in the Chelsea area. * ADDITIONAL DETAILS... - At 9:00 AM CDT Saturday the stage was 13.3 feet. - Forecast...The river is expected to fall below flood stage tomorrow morning and continue falling to 9.1 feet Saturday, August 09. - 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 is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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
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