Weather Alert in Iowa
Severe Thunderstorm Warning issued April 28 at 10:13PM CDT until April 28 at 11:00PM CDT by NWS Des Moines IA
AREAS AFFECTED: Grundy, IA; Hardin, IA; Marshall, IA; Story, IA; Tama, IA
DESCRIPTION: SVRDMX The National Weather Service in Des Moines has issued a * Severe Thunderstorm Warning for... Northeastern Story County in central Iowa... Northern Marshall County in central Iowa... Southeastern Hardin County in central Iowa... Northwestern Tama County in central Iowa... Grundy County in central Iowa... * Until 1100 PM CDT. * At 1013 PM CDT, a severe thunderstorm was located over Zearing, or 13 miles northeast of Nevada, moving northeast at 55 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. This storm has a history of producing 60 mph winds and small hail. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Morrison, Green Mountain, Wellsburg, Union, Conrad, St. Anthony, Lincoln, Union Grove State Park, Eldora, Holland, Beaman, Pine Lake State Park, Gladbrook, Clemons, Colo, Eldora Municipal Airport, Zearing, Grundy Center, New Providence, and Whitten.
INSTRUCTION: 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 central and north central Iowa. A Tornado Watch also remains in effect until midnight CDT for central Iowa.
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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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