A series of storms moving through Southeast Nebraska on Tuesday afternoon prompted several tornado warnings, including a confirmed funnel cloud near Du Bois at 5:14 p.m.
There was no confirmed touchdown in Nebraska and no immediate reports of damage.
Earlier, forecasters tracking thunderstorms reported a possible tornado near Burchard around 2 p.m.
The weather service issued a tornado warning for Johnson and Pawnee counties through 2:30 p.m. Sirens sounded in Tecumseh at 2:15.
The warning was extended to Otoe and Nemaha counties through 3:15.
A confirmed tornado was spotted near Red Oak, Iowa, after the storms crossed the Missouri River.