List of United States tornadoes from August to October 2017
EF # Location County / Parish State Start Coord Time ( UTC ) Path length Max width Summary
EF0 Kewadin Antrim MI 44°55′43″N 85°22′51″W / 44.9285°N 85.3808°W / 44.9285 ; -85.3808 ( Kewadin ( Aug. 3 , EF0 ) ) 22:10-22:11 0.09 mi ( 0.14 km ) 55 yd ( 50 m ) A few homes and outbuildings sustained minor damage
EF0 Lake Winnibigoshish Cass MN 47°27′02″N 94°12′38″W / 47.4506°N 94.2105°W / 47.4506 ; -94.2105 ( Lake Winnibigoshish ( Aug. 3 , EF0 ) ) 23:04-22:15 0.34 mi ( 0.55 km ) 20 yd ( 18 m ) The public documented three simultaneous waterspouts
EF0 Lake Winnibigoshish Cass MN 47°26′03″N 94°15′09″W / 47.4341°N 94.2526°W / 47.4341 ; -94.2526 ( Lake Winnibigoshish ( Aug. 3 , EF0 ) ) 23:04-22:15 0.2 mi ( 0.32 km ) 10 yd ( 9.1 m ) The public documented three simultaneous waterspouts
EF0 Lake Winnibigoshish Cass MN 47°24′00″N 94°17′10″W / 47.3999°N 94.2862°W / 47.3999 ; -94.2862 ( Lake Winnibigoshish ( Aug. 3 , EF0 ) ) 23:10-22:15 0.1 mi ( 0.16 km ) 20 yd ( 18 m ) The public documented three simultaneous waterspouts
EF0 Phoenix Maricopa AZ 33°25′N 112°04′W / 33.41°N 112.07°W / 33.41 ; -112.07 ( Phoenix ( Aug. 3 , EF0 ) ) 00:05-00:10 0.25 mi ( 0.40 km ) 100 yd ( 91 m ) A brief landspout tornado was documented
August -- August 3 event
This page documents all tornadoes confirmed by various weather forecast offices of the National Weather Service in the United States from August to October 2017.