Yesterday I wrote about a survey conducted by the National Weather Service in Des Moines on the storm damage in central Iowa. Although some speculated it was a tornado that hit the towns of Knoxville and Grinnell, the survey concluded straight line winds of up to 105mph caused the widespread damage. Now the weather service has put out a more detailed version of that report, complete with radar imagery and photos of the damage. I hope you take a little time to scan its details and images. The forecasters at the weather service do an excellent job putting these together. To read the report from the National Weather Service in Des Moines, click here.