Weather Alert in Iowa

Recent Locations: Monticello, IA  
Current Alerts for Monticello, IA: Air Quality Alert Flood Watch

Flood Warning issued July 30 at 9:03PM CDT until August 2 at 3:00AM CDT by NWS Quad Cities IA IL

AREAS AFFECTED: Johnson, IA; Louisa, IA; Washington, IA

DESCRIPTION: ...The Flood Warning is extended for the following rivers in Iowa... Iowa River at Wapello affecting Louisa County. Iowa River at Oakville affecting Louisa County. ...The Flood Warning continues for the following rivers in Iowa... Iowa River near Lone Tree affecting Louisa, Washington and Johnson Counties. Iowa River at Marengo affecting Benton and Iowa Counties. * WHAT...Minor flooding is forecast. * WHERE...Iowa River near Lone Tree. * WHEN...From Friday afternoon to early Saturday morning. * IMPACTS...At 16.0 feet, Flood Stage. Flood waters affect parts of Lola Lane and Y Avenue. River Junction Access Park is closed. * ADDITIONAL DETAILS... - At 8:00 PM CDT Wednesday the stage was 14.7 feet. - Forecast...The river is expected to rise to a crest of 16.0 feet early Friday afternoon. It will then fall below flood stage Friday evening. - Flood stage is 16.0 feet.

INSTRUCTION: Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov/quadcities. The next statement will be issued by Thursday evening at 915 PM CDT.

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Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

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

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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