Weather Alert in Iowa
Winter Storm Watch issued March 14 at 3:06AM CDT until March 16 at 10:00AM CDT by NWS Des Moines IA
AREAS AFFECTED: Emmet; Kossuth; Winnebago; Worth; Palo Alto; Hancock; Cerro Gordo
DESCRIPTION: ...POTENTIAL WINTER STORM PRODUCING BLIZZARD CONDITIONS LATE SATURDAY NIGHT THROUGH SUNDAY NIGHT... .A potentially significant winter storm will impact parts of the Upper Midwest this weekend, mainly from late Saturday night through Sunday night, with lingering impacts from blowing snow lasting into Monday morning. A swath of heavy snowfall and strong winds may result in blizzard conditions and significant impacts, especially on Sunday. A brief period of freezing rain is possible Sunday morning prior to switching over to snow. There is still some uncertainty in how far south into Iowa the heaviest snowfall may occur, but the most likely areas to see the higher snowfall amounts are over northern Iowa, though blizzard conditions are possible with lesser snow extending down into south central Iowa. * WHAT...Mixed precipitation followed by blizzard conditions possible. Total snow accumulations between 4 and 7 inches and ice accumulations around a light glaze possible. Winds could gust as high as 60 mph. * WHERE...Portions of north central and northwest Iowa. * WHEN...From late tonight through Monday morning. * 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.
INSTRUCTION: Prepare for possible blizzard conditions. Continue to monitor the latest forecasts for updates on this situation.
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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
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
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