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Three tornadoes leave path of destruction in South Dakota's biggest city

Wednesday, September 11th 2019, 5:45 pm - A tornado left behind a mess in Sioux Falls, South Dakota on Tuesday

Residents are picking up the pieces after three powerful tornadoes left a trail of destruction in Sioux Falls, South Dakota on Tuesday. The U.S. National Weather Service has given all three twisters preliminary ratings of EF-2, with winds estimated between 200 and 210 km/h.

The storms' powerful winds ripped up trees and caused significant damage to buildings and a hospital, which was evacuated, but fortunately, no fatalities have been reported despite reports of people being trapped under collapsed structures.

"Based on early assessments, the area of Sioux Falls that received the great impact from the overnight storm is bordered by 26th Street on the north, 85th Street on the south, Marion Road on the west and Minnesota Avenue on the east," the Sioux Falls Fire Department tweeted.

Officials issued a no travel advisory early Wednesday due to safety concerns with fallen debris and powerlines.

As of 10 a.m. on Wednesday, more than 8,000 customers were still in the dark in Minnehaha County.

Another major concern with Tuesday's twisters was why not all of the city's warning sirens sounded like they should have. City officials said they'll be investigating what went wrong with the outdoor system.

"There was actually a breach of our protocol, in that not the entirety of the siren system was sounded," Sioux Falls Mayor Paul TenHaken told CNN."So we're doing an internal investigation on why that happened, why the existing protocol was not followed."

WATCH BELOW: AN OVERNIGHT BATTLE BETWEEN LIGHTNING AND THE CN TOWER

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