Weather Alert in Iowa
Winter Storm Watch issued March 13 at 3:28AM CDT until March 16 at 10:00AM CDT by NWS Des Moines IA
AREAS AFFECTED: Sac; Calhoun; Webster; Hamilton; Hardin; Grundy; Black Hawk; Carroll; Greene; Boone; Story; Marshall; Tama; Guthrie; Dallas; Polk; Jasper; Poweshiek
DESCRIPTION: ...POTENTIAL WINTER STORM PRODUCING BLIZZARD CONDITIONS SATURDAY NIGHT THROUGH SUNDAY NIGHT... .A potentially significant winter storm will impact parts of the Upper Midwest this weekend, mainly from Saturday night through Sunday night, with lingering impacts due to blowing snow through Monday morning. A swath of heavy snowfall and strong winds may result in blizzard conditions and significant impacts during this time. 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 is over northern Iowa, though blizzard conditions with lesser snow as far south as along the I-80 corridor is possible. * WHAT...Accumulating snow and blizzard conditions are possible. Total snow accumulations up to 3 inches possible. Winds could gust as high as 45 mph. * WHERE...Portions of central to north central Iowa. * WHEN...From Sunday evening 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. Gusty winds could bring down tree branches.
INSTRUCTION: Monitor the latest forecasts for updates on this situation.
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North America Water Vapor (Moisture)
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Weather Topic: What is Drizzle?
Home - Education - Precipitation - Drizzle
Next Topic: Evaporation
Drizzle is precipitation in the form of water droplets which are
smaller than raindrops.
Drizzle is characterized by fine, gently falling droplets and typically does not
impact human habitation in a negative way. The exception to this is freezing drizzle,
a condition where drizzle freezes immediately upon reaching earth's surface.
Freezing drizzle is still less dangerous than freezing rain, but can
potentially result in hazardous road conditions.
Next Topic: Evaporation
Weather Topic: What is Fog?
Home - Education - Cloud Types - Fog
Next Topic: Fractus Clouds
Fog is technically a type of stratus cloud, which lies along the
ground and obscures visibility.
It is usually created when humidity in the air condenses into tiny water droplets.
Because of this, some places are more prone to foggy weather, such as regions
close to a body of water.
Fog is similar to mist; both are the appearance of water droplets suspended in
the air, but fog is the term applied to the condition when visibility is less than 1 km.
Next Topic: Fractus Clouds
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