EF1 tornado in Butler County, Nebraska

This tornado was apparently embedded in a downburst or series of downbursts that caused damage from east of Ulysses through the Ceresco and Valparaiso areas in Saunders county. The tornado damaged a grain bin and trees when it initially touched down and caused other damage along its relatively narrow path. This tornado was from the same supercell thunderstorm that produced 2 earlier tornadoes near Ulysses.

A stationary front over Kansas started lifting north on June 4th as an unseasonably strong upper level low pressure system was organizing over the central Rockies. This allowed very warm and unstable air to feed north into southern Nebraska and southwest Iowa during the afternoon on the 4th. Severe thunderstorms that developed by early afternoon on June 4 over central Nebraska quickly spread and developed into eastern Nebraska and southwest Iowa through evening. A few tornadic producing supercells developed over the area...and many of the storms contained very heavy rain which fell on soils that were already saturated from significant rains recorded over the prior week. This caused areas of flash flooding and subsequent river flooding.