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"Hopefully, the sun will shine a little bit and get a bit warmer. That's going to make it easier," Usera said.
When temperatures warm up into the 50s by Monday, the snow melt could cause flooding, White said, but officials are just focusing on rescue efforts for now.
Meanwhile, National Weather Service meteorologist Mike Fuhs said as many as nine tornadoes touched down in Iowa and Nebraska between 6 p.m. and 7:45 p.m. Friday. He called some of them "quite powerful," and noted it was unusual to see so many and with such power during the fall.
Some of the most severe tornado damage was in Wayne, Neb., where at least 10 buildings were destroyed and five were heavily damaged, the Omaha World-Herald reported. Video showed a farm implement showroom and a grain elevator had been destroyed. Mayor Ken Chamberlain said at least 15 people were injured, with one person in critical condition.
In northwest Iowa, nearly two dozen farmsteads were destroyed and 60 damaged, said Woodbury County Emergency Director Gary Brown. He said the storms cut a 35-mile-long path through the county, but there was only one report of a minor injury.
The cold front is moving slowly east and expanding south and will meet up with the remnants of Tropical Storm Karen. Pojorlie noted that the wet, heavy snow was more typical of a spring storm.
"Normally, we get some snow events here in October that give people a little bit of a chance to learn how to drive in snow again," she said. "This year, we got started with a blizzard."