A powerful tornado has left a trail of destruction in Sioux Falls, South Dakota, toppling trees, knocking out power and seriously damaging both area hospitals, the mayor said.
No deaths or serious injuries were reported after the overnight twister, Sioux Falls Mayor Paul TenHaken said Wednesday morning. Thirty-seven structures collapsed or have major integrity issues, according to officials.
The Avera Behavioral Health Hospital, one of the damaged hospitals, said all patients were safe and some were moved to other facilities, according to a hospital spokesperson.
With so much debris on the roads, a "No Travel Advisory" was issued in the city. The advisory was lifted at 8 a.m. Wednesday but police urged drivers to use caution "as there may be areas still impacted, unreported downed power lines, tree debris, or other road hazards."
Bad idea: rear end a police car stopping traffic for downed power line.— Sioux Falls Police (@siouxfallspd) September 11, 2019
Worse idea: doing the above while drunk.
Fortunately, the officer only received minor injuries. The driver was arrested for DWI. /713 pic.twitter.com/4sRdkavjao
A total of nine tornadoes were reported in Wyoming and two in South Dakota as severe weather struck the region Tuesday night.
Winds were over 100 mph in some areas, said Todd Heitkamp, meteorologist in charge for the National Weather Service in Sioux Falls.
Julie Mericle "was laying in bed watching TV and it sounded like a freight train over the house," she told Sioux Falls ABC affiliate KSFY.
"So I got up, dashed into my closet and it felt like the roof was going to come off," Mericle said, adding that a tree fell on her house.
The tornado warnings began at 11:00 p.m. CST, officials said. Some of the sirens were activated but not all sirens sounded, which is now being investigated, officials said.
Lots of damage across Sioux Falls. Please do not travel right now! Lots of power lines down, trees and tons of debris. Just saw firefighters putting out a fire that was lit by a downed wire. @ksfynews pic.twitter.com/QBhwxiMLrs— Ricardo Lewis (@RicardoKSFY) September 11, 2019
Some power has been restored in the area Wednesday morning but it's expected to take most of the day to get power back throughout the city, a community manager said.
Schools began on a two-hour delay Wednesday, the mayor said.
And the threat is not over. On Wednesday, severe weather threats are expanding east and south, now reaching from Wyoming to Wisconsin. The biggest threats will be damaging winds, huge hail and possibly tornadoes.
ABC News' Will Gretsky and Ahmad Hemingway contributed to this report.