Weather Alert in Wisconsin
Winter Storm Warning issued March 13 at 12:13PM CDT until March 16 at 7:00AM CDT by NWS Twin Cities/Chanhassen MN
AREAS AFFECTED: St. Croix; Pierce; Dunn; Pepin; Chippewa; Eau Claire
DESCRIPTION: ...POWERFUL WINTER STORM ON TRACK TO BRING EXTREME SNOW ACCUMULATIONS AND GUSTY WINDS... ...TRAVEL MAY BECOME IMPOSSIBLE LATE SATURDAY NIGHT AND SUNDAY... .A major winter storm will move across the Upper Midwest starting late Saturday and lasting through Sunday. The first concern is heavy snow, with a broad area of 10 to 16 inches likely, and a narrow swath of 15 to 20 inches Totals across portions of western and central Wisconsin could approach 2 feet. The heaviest snow will fall Saturday evening and overnight, with rates of 2 inches per hour possible. Winds will start out of the northeast at 20 to 30 mph. The second concern is increasing winds on Sunday. Even though the snow will be diminishing on Sunday, northwest winds will increase to 35 to 45 mph. The combination of heavy snow and gusty winds will reduce visibility and create periods of blizzard conditions on Sunday across western and southern Minnesota. Travel is expected to become very difficult or impossible late Saturday night and Sunday. In addition, the amount of water in the snowpack will make it wet and very heavy, leading to the potential for infrastructure damage and a health hazard for those shoveling. * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches. Winds gusting as high as 40 mph. * WHERE...Chippewa, Dunn, Eau Claire, Pepin, Pierce, and St. Croix Counties. * WHEN...From 7 PM Saturday to 7 AM CDT Monday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. The hazardous conditions will impact the Monday morning commute. Gusty winds could bring down tree branches.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 5 1 1 or visit 511wi.gov for road conditions.
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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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