Weather Alert in Iowa
Winter Storm Warning issued February 19 at 2:45PM CST until February 20 at 6:00AM CST by NWS Des Moines IA
AREAS AFFECTED: Webster; Crawford; Carroll; Greene; Boone; Audubon; Guthrie; Dallas; Cass
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...Heavy snow expected. Total snow accumulations between 5 and 8 inches. * WHERE...Portions of western and central Iowa. * WHEN...Until 6 AM CST Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening commute. Heavy snow with breezy winds could lead to isolated power outages.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest travel conditions, check the Iowa 511 app, www.511ia.org, or dial 511.
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North America Water Vapor (Moisture)
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Weather Topic: What are Stratus Clouds?
Home - Education - Cloud Types - Stratus Clouds
Next Topic: Wall Clouds
Stratus clouds are similar to altostratus clouds, but form at a
lower altitude and are identified by their fog-like appearance, lacking the
distinguishing features of most clouds.
Stratus clouds are wider than most clouds, and their base has a smooth, uniform
look which is lighter in color than a nimbostratus cloud.
The presence of a stratus cloud indicates the possibility of minor precipitation,
such as drizzle, but heavier precipitation does not typically arrive in the form
of a stratus cloud.
Next Topic: Wall Clouds
Weather Topic: What are Altocumulus Clouds?
Home - Education - Cloud Types - 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
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