The National Weather Service says a tornado that traveled seven miles across rural western Kansas during the weekend was an EF4, with winds of 165 to 185 miles per hour.
The report from the agency's Dodge City office follows a survey of the tornado's path Saturday night in Pawnee County.
An EF4 is the second-strongest on the scale used to measure the strength of tornadoes.
No injuries occurred, but one farmhouse lost most of its roof and some walls, and four others sustained lesser damage as the tornado traveled from six miles southwest of Rozel to about one mile west of the small town. The Weather Service says the tornado then turned to the northwest and dissipated about three miles northwest of town.
The tornado measured 1,100 yards across at its maximum width.