Weather Alert in Illinois
Severe Thunderstorm Warning issued April 29 at 1:34PM CDT until April 29 at 2:15PM CDT by NWS Paducah KY
AREAS AFFECTED: Jackson, IL; Perry, IL; Perry, MO
DESCRIPTION: SVRPAH The National Weather Service in Paducah has issued a * Severe Thunderstorm Warning for... Southern Perry County in south central Illinois... Jackson County in southern Illinois... Southeastern Perry County in southeastern Missouri... * Until 215 PM CDT. * At 134 PM CDT, severe thunderstorms were located along a line extending from near Willisville to 9 miles southwest of Ava to near Altenburg, moving east at 40 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Dowell, Campbell Hill, St. Johns, Ava, Vergennes, Du Quoin, Gorham, Frohna, Carbondale, Elkville, Makanda, Grand Tower, Murphysboro, Cedar Lake Area, De Soto, Altenburg, Willisville, and Pinckneyville. This includes Interstate 55 between Mile Markers 120 and 121.
INSTRUCTION: For your protection move to an interior room on the lowest floor of a building.
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Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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