MADISON, Wis. - A developing winter storm could affect far southwestern Wisconsin from Friday night into Saturday morning with accumulating snow.
A Winter Storm Watch has been issued for Crawford and Grant counties of southwestern Wisconsin from 7 p.m. Friday evening until noon Saturday.
A storm system will pass to the south of Wisconsin from Friday night through Saturday. After a pleasant day on Friday, skies will become mostly cloudy on Friday night, and snow should develop by late evening. The snow could fall heavily for several hours before mixing with or changing to rain on Saturday morning before ending.
At the same time, dry easterly winds over much of southern Wisconsin will block the eastward edge of the snow, resulting in a sharp cut-off from west to east over southwestern and southern Wisconsin. It is likely that while several inches of snowfall may occur near the Mississippi River in southwestern Wisconsin through Saturday morning, little or no snow may occur east of a line from Wisconsin Dells to Madison to Janesville.
Snowfall amounts will be highly dependent on temperatures when the precipitation arrives. A difference of just a few degrees can make the difference between a cold rain and a heavy, wet snow.
The greatest potential for heavier snow accumulations will remain west of the Mississippi River in Minnesota and Iowa where Winter Storm watches are also in effect. Anyone with travel plans west and southwest of Madison and especially into Minnesota, Iowa, and far western Illinois should monitor forecasts for Friday night and Saturday.
Stay tuned to WISC-TV3, Channel3000.com, and monitor the Channel3000 First Alert Weather and Traffic App for the latest on the changing weather.
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