Weather Alert in Iowa
Winter Weather Advisory issued February 19 at 10:45AM CST until February 20 at 6:00AM CST by NWS Des Moines IA
AREAS AFFECTED: Cerro Gordo
DESCRIPTION: Precipitation will spread from western into central Iowa this afternoon and evening. Initially, it may begin as a rain/snow mix across southern and western Iowa before changing to snow. A band of 5 to 8 inches of snow is expected by Friday morning from western through central to northeastern Iowa. There will be a sharp gradient of snowfall on either side of the heaviest band of snow. Snow rates may exceed 1" per hour at times this evening leading to rapid snow accumulations on roads and slick travel conditions. A small change in the location of the band could alter forecast snow amounts. * WHAT...Snow expected. Total snow accumulations between 2 and 4 inches. * WHERE...Cerro Gordo County. * WHEN...From 6 PM this evening to 6 AM CST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday evening commute.
INSTRUCTION: Slow down and use caution while traveling. For the latest travel conditions, check the Iowa 511 app, www.511ia.org, or dial 511.
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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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