EF1 tornado in Seward County, Nebraska

This tornado crossed into Seward county from York county and was from a trailing supercell thunderstorm that followed the storm that produced an EF3 tornado just to the south a little earlier. This tornado was responsible snapping several power poles as it entered into Seward County along 476th street. The tornado continued northeast producing occasional tree damage, tipping over center pivot irrigation equipment, and outbuilding damage.

One long-tracked supercell thunderstorm, and several other shorter-lived storms spawned tornadoes across eastern Nebraska during the late afternoon and evening hours of May 11th. The storms developed near the intersection of a warm front and dry-line/cold front in south central Nebraska then tracked northeast along the warm front toward the Lincoln and Omaha areas. Conditions in the area were very unstable with temperatures in the 80s to around 90 south of the warm front with dew point temperatures in the 60s. In total 12 tornadoes were recorded in the Omaha/Valley warning area with several others in the Hastings forecast area. The storms also produced very heavy rainfall which caused some flooding, mostly north through west and southwest of Lincoln.