Jodie Fawl of the Nebraska Emergency Management Agency said there were injuries in the state, but could not provide details. Multiple buildings and a softball field were damaged, she said.
"Most of the buildings damages are businesses and it was after hours, so hopefully we are OK there," she said.
Weiss said forecasters had warned residents to brace for twisters, and that may have led people to take precautions. "It was good forecasts and hopefully the warnings helped people today," he said.
"They did not strike towns directly as far as we know of," he added.
In northwest Iowa, a mile-wide tornado touched down near the town of Cherokee, cutting a 2- to 3-mile path through farmland but missing any population centers, the state Department of Homeland Security said.
The Des Moines Register also reported "major damage" to the high school in nearby Alta, Iowa.