High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! The 1967 Southern Minnesota tornado outbreak was a tornado outbreak that affected portions of south central and southeast Minnesota on April 30, 1967. The outbreak spawned a total of nine tornadoes resulting in thirteen deaths and eighty injuries. Local area residents refer to the day as "Black Sunday". By mid-afternoon on April 30, a surface low pressure area was centered in Pierre, South Dakota. Several fronts stretched from the low pressure area with a stationary front located from north of Sioux Falls, South Dakota to near LaCrosse, Wisconsin.

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