Weather Alert in Wisconsin
Winter Storm Watch issued March 12 at 11:59PM CDT until March 16 at 4:00PM CDT by NWS Milwaukee/Sullivan WI
AREAS AFFECTED: Marquette; Green Lake; Fond Du Lac; Sheboygan; Sauk; Columbia; Dodge; Washington; Ozaukee; Iowa; Dane; Jefferson; Waukesha; Milwaukee; Lafayette; Green; Rock; Walworth; Racine; Kenosha
DESCRIPTION: * WHAT...Heavy snow and blowing snow is possible Saturday night and Sunday, especially toward central WI. A wintry mix will be possible for a time Saturday night and Sunday, including a chance for sleet and freezing rain with some accumulating ice looking increasingly likely. Ice accumulation is most likely along and north of I-94. Rain may also mix in for a time mainly south of I-94. The wintry mix is expected transition to moderate to heavy snow across southern Wisconsin Sunday evening, persisting into Monday. Strong winds and blowing snow will likely continue into Monday as well. * WHERE...Portions of east central, south central, and southeast Wisconsin. * WHEN...From Saturday evening through Monday afternoon. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning commute. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...There remains a fair amount of uncertainty with the track of this system as well as resultant precipitation types and amounts.
INSTRUCTION: 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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