Low pressure will gather strength as it moves northeast from central Illinois to far northern lower Michigan today. A strong upper level disturbance will accompany the low. These features are bringing the first widespread accumulating snowfall of the season to south central Wisconsin and portions of southeast Wisconsin today. A general 2 to 5 inches of accumulation is expected mainly northwest of a Berlin to Madison to Monroe line by mid afternoon. A Winter Weather Advisory is in effect until 3 PM CST this afternoon for this area. The rain will mix with and change to snow across southeast Wisconsin this afternoon, as colder air moves east across the area. Lighter accumulations are expected across this area.
In addition, the recent and current rainfall across the area may cause some rivers to rise to bankfull stage or higher. Also, some street flooding may occur due to storm drains being clogged with fallen leaves. See our local Advanced Hydrologic Prediction Service website to monitor area river gauge levels.
Total south central and southeast Wisconsin snowfall expected between 6 AM CST and 6 PM CST today:
Total statewide snowfall expected through 6 PM CST today: