Weather Alert in Iowa
Flood Watch issued July 30 at 2:51PM CDT until August 4 at 7:00AM CDT by NWS Des Moines IA
AREAS AFFECTED: Humboldt; Webster; Hamilton
DESCRIPTION: ...The Flood Watch is extended for the following rivers in Iowa... Des Moines River at Fort Dodge affecting Humboldt, Hamilton and Webster Counties. ...The Flood Watch continues for the following rivers in Iowa... North Raccoon River near Perry affecting Dallas County. * WHAT...Flooding is possible. * WHERE...The Des Moines River at Fort Dodge, or from confluence of the West and East Fork Des Moines River to the Boone River. * WHEN...From Thursday afternoon to Monday morning. * IMPACTS...At 11.0 feet, Water affects lowland areas near the river and threatens residences along the river in Fort Dodge. * ADDITIONAL DETAILS... - At 1:00 PM CDT Wednesday the stage was 8.4 feet. - Forecast...Flood stage may be reached tomorrow afternoon. - Flood stage is 10.5 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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