A number of storms became strong to severe late Thursday afternoon due to a strong low pressure system and associated frontal boundary.
1:56 PM – A tornado watch is issued for the counties of Anderson, Coffey, Douglas, Franklin, Lyon, and Osage.
4:17 PM – Douglas Co.: A Flash Flood Warning is issued by the National Weather Service
5:36 PM – Eudora (Douglas Co.): A trained spotter reports a 1.5 foot diameter tree snapped in addition to power lines down.
5:52 PM – 6 miles N Baldwin City (Douglas Co.): Law enforcement reports a barricaded road 1 mile north of Vinland due to high water from flash flooding.
5:53 PM – 3 miles WNW Eudora (Douglas Co.): Law enforcement reports county road barricaded due to high water from flash flooding.
6:05 PM – Eudora (Douglas Co.): A trained spotter reports water over the spillway of a private retention pond and across the driveway 6 to 8 inches deep. Measured 3.6 inches of rainfall for a storm total.
At least a dozen tornadoes were reported across the state of Wisconsin alone, with only minor damage reported thus far. Wisconsin Rapids, Wisconsin reported hail over four inches in diameter early Thursday evening, while numerous reports of 70 mile-per-hour wind gusts came out of Minnesota and Missouri.
This is the official storm report map from the National Weather Service for June 7, 2007: