The National Weather Service extended severe thunderstorm warnings for parts of Milwaukee and Waukesha counties until 6:30 p.m. Wind gusts could reach 60 mph, and penny-sized hail is possible. Expect damage to roofs, siding and trees.

Rescue workers and emergency crews are responding to life-threatening flash flooding in the wake of record rainfall in Wisconsin, and more rain is in the forecast for Sunday night, officials said.