A short-lived severe thunderstorm popped up in Fond du Lac County Monday morning and pummeled Waupun with golf ball size hail. Waupun emergency management director BJ DeMaa says a severe thunderstorm warning was issued at 10:25am Monday and five minutes later hail impacted the community for about five minutes. DeMaa says he has heard of hail damage to vehicles. He says its been a number of years since he’s seen hail this large. On Tuesday DeMaa says the National Weather Service is warning there is an enhanced risk for severe weather, including the possibility of tornadoes.