The National Weather Service is warning of mudslides near the Mississippi River following heavy rain overnight that has caused flash flooding in the area.

The NWS has issued a flash flood warning for northwestern Crawford County and southwestern Vernon County in Wisconsin Wednesday morning, along with areas in Minnesota and Iowa.

Weather officials said they expect the 2 to 3 inches inches of rain that fell overnight to cause mudslides along Wisconsin Highway 35 south of La Crosse. A report also said a mudslide is covering one lane of Wisconsin Highway 82 in De Soto.

A flood watch remains in effect for much of the rest of southern Wisconsin.

Officials are paying particular attention to rivers in southern Wisconsin, including the Baraboo River near Rock Springs and Baraboo and the Wisconsin River in Portage. The Baraboo River is expected to crest Sunday at 18.3 feet, which is minor flood stage. The Wisconsin River is expected to crest Monday at 14.6 feet, which is below flood stage, but might still cause issues in the Blackhawk Park area.

Blackhawk, West Lane, Lake and Old River roads in the Blackhawk Park area are expected to have water over them by the time the Wisconsin River crests. Tritz Road in the town of Caledonia is expected to be flooded by the Baraboo River as it moves into minor flood stage at 16 feet.

The National Weather service said minor flooding is possible, and flood stage may be reached by Saturday afternoon. According to WISC-TV meteorologist Haddie McLean, that’s because the rain isn’t over yet.

“Scattered showers and thunderstorms are expected to continue for the next couple of days in southern Wisconsin as a warm front lifts northward into the region and becomes stationary.” said McLean. “Rainfall rates may exceed 1 inch per hour at times.  The heaviest rain is expected north and west of Madison.”

“Showers and thunderstorms should diminish by the weekend with more sunshine in the forecast on Saturday,” said McLean.