SIOUX FALLS, S.D. (KELO) — This week marks the four-year anniversary of three EF-2 tornadoes briefly touching down in Sioux Falls A line of thunderstorms also produced straight-line winds of 80 to 100 miles an hour.In Sioux Falls, businesses on 41 Street and a few miles away the Avera campus near I-229 took the brunt … Continue reading Sioux Falls tornados, 4 years later