Weather Alert in Iowa
Flood Watch issued July 31 at 4:59AM CDT until August 2 at 7:00AM CDT by NWS Des Moines IA
AREAS AFFECTED: Black Hawk
DESCRIPTION: ...The Flood Watch continues for the following rivers in Iowa... Cedar River at Waterloo affecting Black Hawk county. * WHAT...Flooding is possible. * WHERE...The Cedar River at Waterloo, or from the Waterloo-Cedar Falls city limits to Spring Creek near La Porte City. * WHEN...From late Friday night to Saturday morning. * IMPACTS...At 13.0 feet, Many storm sewers are closed along Black Hawk Creek and the Cedar River. The Fletcher Ave levee gates are closed. * ADDITIONAL DETAILS... - At 4:00 AM CDT Thursday the stage was 11.0 feet. - Forecast...Flood stage may be reached early Saturday morning. - Flood stage is 13.0 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 is Freezing Rain?
Home - Education - Precipitation - Freezing Rain
Next Topic: Graupel
Freezing rain is a condition where precipitation which has fallen in the form of
water droplets reaches temperatures which are below freezing and freezes upon
coming into contact
with surface objects. The result of this precipitation is a glaze of ice which
can be damaging to plants and man-made structures. A severe onset of freezing
rain which results in a very thick glaze of ice is known as an ice storm.
Next Topic: Graupel
Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
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