Weather Alert in Illinois

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Current Alerts for Delavan, IL: Flood Warning

Severe Thunderstorm Warning issued April 2 at 7:43PM CDT until April 2 at 8:45PM CDT by NWS Chicago IL

AREAS AFFECTED: Grundy, IL; Kendall, IL; La Salle, IL; Livingston, IL

DESCRIPTION: SVRLOT The National Weather Service in Chicago has issued a * Severe Thunderstorm Warning for... Southeastern Kendall County in northeastern Illinois... Northwestern Livingston County in central Illinois... Central La Salle County in north central Illinois... Grundy County in northeastern Illinois... * Until 845 PM CDT. * At 743 PM CDT, severe thunderstorms were located along a line extending from near Marseilles to near Streator to near Washburn, moving northeast at 45 mph. HAZARD...70 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. * Locations impacted include... Ottawa, Streator, Morris, Channahon, Minooka, Peru, La Salle, Braidwood, Coal City, Marseilles, Oglesby, Diamond, Seneca, Gardner, North Utica, Wenona, Mazon, South Streator, Braceville, Tonica, Grand Ridge, Naplate, Godley, Lostant, and Ransom.

INSTRUCTION: Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. A Tornado Watch remains in effect until 1100 PM CDT for north central and northeastern Illinois.

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Weather Topic: What are Altocumulus Clouds?

Home - Education - Cloud Types - Altocumulus Clouds

Altocumulus Clouds Next Topic: Altostratus Clouds

Similar to cirrocumulus clouds, altocumulus clouds are characterized by cloud patches. They are distinguished by larger cloudlets than cirrocumulus clouds but are still smaller than stratocumulus clouds.

Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km) and may resemble, at times, the shape of a flying saucer. These uncommon formations, called altocumulus lenticularis, are created by uplift in the atmosphere and are most often seen in close proximity to mountains.

Next Topic: Altostratus Clouds

Weather Topic: What are Cirrocumulus Clouds?

Home - Education - Cloud Types - Cirrocumulus Clouds

Cirrocumulus Clouds Next Topic: Cirrostratus Clouds

Cirrocumulus clouds form at high altitudes (usually around 5 km) and have distinguishing characteristics displayed in a fine layer of small cloud patches. These small cloud patches are sometimes referred to as "cloudlets" in relation to the whole cloud formation.

Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the water droplets in the cloud freeze into ice crystals and the cloud becomes a cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud formations generally pass rapidly.

Next Topic: Cirrostratus Clouds

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