7 out of the 11 tornadoes that occurred on June 15, 1990 were in the state of Nebraska. The strongest was an F4 that grew at times to be 1.5 miles wide. It began just NW of Stratton. It was a multi-vortex tornado at this time that merged near Macklin Bay on Swanson Lake. It moved ENE and lifted after a 28 mile path 5 miles NE of McCook.
Most of the structural damage was in Hitchcock County. 35 rural houses were damaged/destroyed. There was one injury and no fatalities.
It was reported that the tornado picked up water and mud from Swanson Lake and threw it up against the SW side of buildings, trees and poles nearby.
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