Weather Alert in Wisconsin
Winter Weather Advisory issued April 1 at 1:13AM CDT until April 3 at 1:00AM CDT by NWS Duluth MN
AREAS AFFECTED: Burnett; Washburn; Sawyer
DESCRIPTION: * WHAT...Mixed precipitation expected. Total snow and sleet accumulations between 1 and 3 inches and ice accumulations up to two tenths of an inch. * WHERE...Burnett, Sawyer, and Washburn Counties. This includes the Tribal Lands of the Lac Courte Oreilles Reservation and the St. Croix Band in Burnett County. * WHEN...From 1 AM Thursday to 1 AM CDT Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday morning and evening commutes. * ADDITIONAL DETAILS...The majority of the snowfall is expected to fall during the daytime hours. With the high sun angle and temperatures hovering just above freezing, snowfall will have a difficult time accumulating on warm surfaces leading to a slushy mess.
INSTRUCTION: Slow down and use caution while traveling. Call 511 or visit www.511wi.gov for Wisconsin road information.
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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
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
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