The weather service says the twister packed winds of 120 to 130 miles per hour, or even slightly stronger, when it hit the park near Chetek.
At noon Wednesday, some residents were allowed back into the trailer park, officials with Wisconsin Emergency Operations Center said.
One person is confirmed dead in Barron County along with 25 injured after a tornado hit. Windows blew out and devastation turned many lives upside down as an EF-2 rated tornado barreled down on them. A dozen more were severely damaged and gas and electricity to the park had to be shut down for safety reasons.
Elk City Public Schools were canceled for Wednesday, the school system said in a statement. "I think it's simply because people are inundated with those news stories when the mobile home parks are hit because the damage is much more significant".
A 46-year-old man was killed at the trailer park and at least 25 other people were injured, according to the Barron County Sheriff's Department.
The Red Cross and the Salvation Army set up a shelter and were providing food and clothes for displaced families.
"A few trailers on the perimeter are still standing, but everything in the middle is completely gone", Chetek police Officer Cody Stauner told the Leader-Telegram.More news: ICJ rules in favour of India, stays execution of 'spy'
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"I've lived in Oklahoma nearly 50 years", he said. "It's heartwarming. Everybody wants to help". Lightning blew siding and bricks off a home in Lincoln and a funnel cloud was spotted about 40 miles southwest of the city, near Exeter, but no damage was reported.
In total, the Barron County Sheriff's Office believes 15 homes are a complete loss.
The twisters were among up to 29 that were reportedly spawned by powerful storms that raced through a swath of the central U.S. stretching from Texas to the Great Lakes on Tuesday evening, destroying dozens of homes, killing two people and injuring dozens of others.
The National Weather Service reported a tornado touchdown in the area just after 5:30 p.m. Tuesday.
A team from the National Weather Service is expected to arrive in Chetek Wednesday morning to assess the damage and make a final determination on the severity of the tornado.
Several tornado warnings were issued as severe thunderstorms moved east across western Wisconsin. But she said his last wish was for her to have a storm cellar. "It quickly gained strength over Washington County".