Weather Alert in Iowa
Blizzard Warning issued March 14 at 11:34AM CDT until March 16 at 7:00AM CDT by NWS Des Moines IA
AREAS AFFECTED: Adams; Union; Clarke; Lucas; Monroe; Wapello; Taylor; Ringgold; Decatur; Wayne; Appanoose; Davis
DESCRIPTION: ...BLIZZARD CONDITIONS SUNDAY INTO MONDAY MORNING... .A significant winter storm will impact parts of the Upper Midwest this weekend, mainly from Sunday through Monday morning. Widespread snow will fall across Iowa with higher amounts of 6+ inches possible north and east. Winds will gust 55-65+ mph, resulting in significant drifting of snow and visibility reductions. Travel will become very dangerous, if not impossible at times across parts of northern and eastern Iowa. Precipitation will begin as rain on Sunday morning and transition to a wintry mix, which may produce a light glaze of ice, before transitioning fully to snow. * WHAT...Blizzard conditions expected. Total snow accumulations between 1 and 3 inches. Winds gusting as high as 55 to 65 mph. * WHERE...Portions of south central, southeast, and southwest Iowa. * WHEN...From 1 PM Sunday to 7 AM CDT Monday. * IMPACTS...Plan on slippery road conditions. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning commute. Strong winds could cause tree damage and result in power outages.
INSTRUCTION: Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. For the latest travel conditions, check the Iowa 511 app, www.511ia.org, or dial 511.
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
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