Weather Alert in Wisconsin
Winter Storm Watch issued March 13 at 9:36PM CDT until March 16 at 7:00PM CDT by NWS Milwaukee/Sullivan WI
AREAS AFFECTED: Iowa; Dane; Jefferson; Waukesha; Milwaukee; Lafayette; Green; Rock; Walworth; Racine; Kenosha
DESCRIPTION: ...A PROLONGED WINTER WEATHER EVENT IS EXPECTED THROUGH THE LAST HALF OF THE WEEKEND AND THROUGH MONDAY... .A strong late winter storm system is expected to impact southern Wisconsin during the last half of the weekend in 3 phases: The first phase will run from Saturday night into Sunday morning and will feature a Winter Weather Advisory. During this time, snow accumulations of 1 to 3 inches are expected in the advisory area along with the potential for around a tenth of an inch of ice accumulation. The second phase is then expected from Sunday late morning into Sunday afternoon as warm air causes a transition to rain over a majority of southern Wisconsin. Thunderstorms may occur during this time. The last phase will then run from late Sunday afternoon through Monday as cold air then wraps back into the area and heavy banded snow moves in. Snowfall totals from 5 to 9 inches will result. A light glaze of ice may also occur, especially over central and east central Wisconsin. Wind gusts up to 45 mph will cause blowing snow and visibility restrictions. Hazardous travel is expected during both headline time frames. * WHAT...Heavy mixed precipitation possible. Total snow accumulations between 4 and 7 inches and ice accumulations around one tenth of an inch possible. Winds could gust as high as 45 mph. * WHERE...Portions of south central and southeast Wisconsin. * WHEN...From Sunday afternoon through Monday evening. * 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. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches.
INSTRUCTION: Monitor the latest forecasts for updates on this situation.
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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