Light snow throughout day to impact travel

Light snow throughout day to impact travel

MADISON, Wis. – A winter storm system will bring occasional snow across southern Wisconsin today, continuing through much of the day at a light to occasionally moderate clip before tapering to flurries later this evening, and ending early on Monday morning.

During the day, anywhere from two to five inches of snow is expected, with the heaviest totals likely occurring over southwestern Wisconsin toward Platteville. Before the snow tapers to flurries tonight, an additional inch of snow may accumulate, producing an overall storm total of around two inches well north and east of Madison, to around four inches in and around Dane County, to as much as half a foot over parts of Grant County over southwestern Wisconsin.

Because of the impacts to travel, Winter Weather Advisories are in effect for much of southern Wisconsin and nearby portions of adjacent states. The advisory is in effect until midnight for areas west of a Mauston to Lone Rock to Platteville line, as well as for much of Iowa and northern Illinois. The advisory is in effect until 3 AM Monday morning for Dane County and areas immediately to the west and south in Wisconsin, as well as for Jefferson and Walworth counties of southeastern Wisconsin. Farther to the east into the Milwaukee metropolitan area and south into the northern and northwestern suburbs of Chicago, the Winter Weather Advisory runs until 6 AM Monday morning.


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The weather will be quiet and cold for Monday and Tuesday, but another winter storm system may affect southern Wisconsin from Tuesday night through much of the day on Wednesday. There still is a little more uncertainty to the exact path of this storm and its temperature profile that will determine if there will be mainly snow from Tuesday night into Wednesday, or if a period of light sleet and freezing rain is possible for part of the time. There is enough confidence that there will some impactful winter weather during that time period, so another Alert Day has been placed into the forecast from Tuesday night through Wednesday.

Looking even farther out into the future, another winter storm system may be possible from later Saturday through Sunday of next weekend. There is even more uncertainty with this system, as the European Center for Medium-Range Weather Forecasting (ECMWF) weather computer model is predicting a wintery mix of precipitation from later Saturday afternoon into Saturday night before changing precipitation to snow by Sunday morning with several inches of accumulation possible.

The United Sates National Weather Service Global Forecast System (GFS) had a winter storm in its earlier forecasts, but has backed off of the storm threat in forecasts over the same time period, and now indicates the threat from just some light snow or flurries. In any event, the News 3 Now First Alert Weather team will be watching all three weather systems for possible updates to the ongoing forecast.

Please monitor News 3 Now’s Channel 3000 weather forecasts, News 3 Now newscasts on WISC-TV, the News 3 Now First Alert Weather and Traffic App for the latest updates on these winter storm systems. 

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