Weather Alert in Iowa
Flood Watch issued June 26 at 10:09AM CDT until July 1 at 7:00PM CDT by NWS Des Moines IA
AREAS AFFECTED: Dallas
DESCRIPTION: ...The National Weather Service in Des Moines IA has issued a Flood Watch 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. Shell Rock River at Shell Rock affecting Bremer, Black Hawk and Butler 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 North Raccoon River near Perry, or from the Greene-Dallas County line to the South Raccoon River. * WHEN...From Saturday afternoon to Tuesday evening. * IMPACTS...At 17.0 feet, Water approaches the bottom of the US 169 bridge on the north side of Adel and affects agricultural land northeast of Adel. * ADDITIONAL DETAILS... - At 9:15 AM CDT Thursday the stage was 7.2 feet. - Forecast...Flood stage may be reached Saturday afternoon. - Flood stage is 15.0 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 Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
Weather Topic: What are Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds
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