Weather Alert in Illinois

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Flood Warning issued April 3 at 12:14PM EDT by NWS Indianapolis IN

AREAS AFFECTED: Crawford, IL; Lawrence, IL; Knox, IN; Sullivan, IN

DESCRIPTION: ...The National Weather Service in Indianapolis IN has issued a Flood Warning for the following rivers in Indiana...Illinois... Wabash River at Riverton. .Multiple rounds of rainfall have brought lowland flooding to the Wabash River basin. The Wabash is expected to crest at Lafayette on Sunday, but the crest is not expected to reach the lower Wabash until the weekend of April 11th. The current river forecast includes expected rainfall amounts of 0.75 to 1.25 inches in the Wabash basin through Sunday morning, when dry weather is expected to move into the area. Variations from those expected amounts could change the crests as well as the amount of time spent in flood at any given location. * WHAT...Minor flooding is forecast. * WHERE...Wabash River at Riverton. * WHEN...From late tonight until further notice. * IMPACTS...At 18.5 feet, High water surrounds elevated river cabins. County roads to these cabins are impassable. Agricultural flooding is in progress. Seep water develops behind levees. * ADDITIONAL DETAILS... - At 11:00 AM EDT Friday /10:00 AM CDT Friday/ the stage was 11.7 feet. - Forecast...The river is expected to rise above flood stage late tonight and continue rising to a crest of 19.2 feet Friday, April 10. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood

INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov/ind. The next statement should be issued this evening by around 1130 PM EDT /1030 PM CDT/.

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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

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Cumulus Clouds Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

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