Weather Alert in Wisconsin
Special Weather Statement issued March 31 at 12:39PM CDT by NWS Milwaukee/Sullivan WI
AREAS AFFECTED: Iowa; Dane; Jefferson; Lafayette; Green; Rock
DESCRIPTION: At 1239 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Waunakee to Council Hill. Movement was east at 50 mph. HAZARD...Wind gusts up to 40 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Madison, Sun Prairie, Fitchburg, Watertown, Middleton, Stoughton, Fort Atkinson, Waunakee, Monroe, Verona, Oregon, Jefferson, McFarland, Monona, Lake Mills, Edgerton, Evansville, Marshall, Waterloo, and Brodhead. This includes the following highways... Interstate 39/90/94 between mile markers 132 and 137. U.S. Highway 18 between mile markers 70 and 84. U.S. Highway 12 between mile markers 250 and 273. U.S. Highway 151 between mile markers 98 and 104. Interstate 39/90 between mile markers 138 and 167. Interstate 94 between mile markers 241 and 270. Wisconsin Highway 26 between mile markers 19 and 42.
INSTRUCTION: If outdoors, consider seeking shelter inside a building.
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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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