La Crosse, Wisconsin – A prolonged winter storm could bring heavy snow, ice, and dangerous winds across parts of Wisconsin and Iowa beginning overnight and lasting into Monday morning.
According to the National Weather Service in La Crosse, a Winter Weather Advisory remains in effect from 1 a.m. to 1 p.m. Sunday for portions of northeast Iowa and southwest Wisconsin, including Prairie du Chien, Waukon, Richland Center, Cresco, Osage, and Decorah.
Forecasters say mixed precipitation is expected during the advisory period, with snow accumulations up to 1 inch and ice accumulations around one-tenth of an inch possible. Winds may gust as high as 40 mph, creating slick roads and reduced visibility.
A Winter Storm Watch remains in effect from Sunday afternoon through Monday afternoon, when heavier precipitation is expected to develop across the region.
During that period, the National Weather Service says 4 to 9 inches of combined snow and sleet could fall, along with a light glaze of ice. Winds may increase to gusts near 50 mph, potentially producing blowing snow and near-blizzard conditions in exposed areas.
Across the broader Upper Mississippi Valley, forecasters say the strongest part of the storm may bring more than 12 to 18 inches of snow north of Interstate 90, with some locations north of Highway 10 possibly approaching 24 inches.
The combination of snow, ice, and strong winds could lead to very difficult travel and sharply reduced visibility, particularly Sunday night. Some roads may become impassable, especially in open or wind-prone areas.
Hazardous conditions could also impact the Monday morning commute, and gusty winds may bring down tree branches.
Drivers are urged to slow down and use caution. Road conditions are available at 511ia.org in Iowa and 511wi.gov in Wisconsin.
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