On May 6, 1965 the Twin Cities(Minneapolis-St. Paul) and suburbs were hit by many powerful tornadoes. Thirteen people were killed in these tornadoes but the death toll could have been much worse if not for the efforts of WCCO radio. Over five hours of WCCO radio coverage is available here at http://www.radiotapes.com/specialpostings.html. You need to go down to severe weather coverage. It is interesting to hear what they recalling the storms in those days. There is also a great page on the Channhassen Weather Service PAge regarding this outbreak.