Weather Alert in Illinois

Recent Locations: Tuckasegee, NC   Matteson, IL  
Current Alerts for Matteson, IL: Beach Hazards Statement

Special Weather Statement issued July 6 at 7:12PM CDT by NWS Lincoln IL

AREAS AFFECTED: Piatt; Champaign; Macon; Moultrie; Douglas

DESCRIPTION: At 712 PM CDT, Doppler radar was tracking a cluster of strong thunderstorms near Bondville, or 7 miles southwest of Champaign, moving northeast at 20 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Champaign, Decatur, Urbana, Monticello, Tuscola, Savoy, Mount Zion, St. Joseph, Tolono, Villa Grove, Arthur, Bement, Philo, Cerro Gordo, Long Creek, Sidney, Atwood, Lovington, Pesotum, and Dalton City. This includes the following highways... Interstate 57 between mile markers 208 and 238. Interstate 72 between mile markers 176 and 182. Interstate 74 between mile markers 177 and 195.

INSTRUCTION: If outdoors, consider seeking shelter inside a building. Torrential rainfall is also occurring with this storm and may lead to localized flooding. Do not drive your vehicle through flooded roadways.

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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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