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ADAIRSVILLE, Ga. -- Just onetornado,more than four times the width of the Georgia Dome, was to blame for the widespread damage across North Georgia Wednesday.

Authorities believethe EF3tornado swelled to 900 yards wide as it tore across nearly 22 miles of Gordon and Bartow counties.

PHOTOS | Severe weather pictures

National Weather Service officials say the Wednesday twister had an estimated peak wind speed of 160 mph when it slammed into Adairsville.That's just shy of an EF4 tornado, which has winds of 166 mph and above.

Georgia Insurance and Safety Fire Commissioner Ralph Hudgens said Wednesday's tornadoes caused an estimated $75 million in insured losses.

The heaviest damage was found at the Daiki Corp. manufacturing plant in Adairsville, where the 160 mph winds struck.

RELATED | Daiki employees return to work after storm

The tornado killed an Adairsville man andinjured 17 people.

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