Lake Winnebago 1/13 That was until those high winds and warm daytime temperatures Saturday caused roughly 150 feet of ice to open up. "There's some places that are out, 200, 300 yards. It's going to be dangerous. From open water to solid ice. Meanwhile, on the east side of the lake, in the town of Pipe, those same overnight winds caused tons of ice to pile up on a short stretch of shoreline in what took just seconds.