A late June tornado outbreak took place 31 years ago today in Minnesota and Iowa. A strong short wave move SE from the Dakota's into Minnesota and Iowa. NW flow at 500mb was in excess of 50knots along with very steep mid level lapse rates. Dew points across Iowa increased into the low 70's by early afternoon. The first tornado was reported in extreme SE North Dakota around 2PM. As the storms continued to develop into Minnesota during the late afternoon several tornadoes were reported. The supercells were isolated and slow moving. The tornadoes were highly visible, from over ten miles away in some cases. Algona, Iowa was hit by an F3 tornado that destroyed many homes and killed two people. At 7:45 PM Manson, Iowa took a direct hit from an F4 tornado that killed three people and destroyed 25 businesses and over 100 homes. The tornado moved through town at less than 20 mph. Webster City, Iowa escaped a large and probably violent tornado as it passed about a mile to the east of town. Vince Miller was chief meteorologist for WOI television in Ames in June 1979. He told me that he called his wife In Jewell, Iowa and told her to get the kids in the basement because there was a tremendous "hook" on his radar just to the NW of their home. Some of the tornadoes were on the ground for up to an hour or more.