At the beginning of the storm evolution, a few discrete cells produced a tornado near Elk Mound. A very favorable environment capable of producing supercells and tornadoes was in place across west central Wisconsin. Gradual development of thunderstorms occurred during the early evening with widespread storms stretching from northwestern Iowa, southern Minnesota, into western and northern Wisconsin. A few became severe, but the number of storms probably limited most from becoming very strong. The supercell that produced the strong EF3 tornado was an exception.  It rapidly intensified and went on to produce the first September EF3 tornado in Wisconsin since Ladysmith on 9/2/2002. Also, the last EF3 tornado this late in the season occurred on 9/28/1971.
As the storms evolved during the evening, a broken line developed, with some straight-line wind damage east of the tornado in Chippewa Falls.
The local emergency manager provided preliminary damage estimates. It includes the costs of repairing or replacing the 29 homes that were damaged or destroyed. The 22 single-family homes were valued at $2.68 million, and the seven manufactured homes were valued at $136,500, for a total housing cost of $2.7 million. With repairs to public utilities, the cost rose to $3.0 million in damages.

Tornado in DUNN, WISCONSIN
From 24-SEP-19 17:45:00 to 24-SEP-19 17:50:00 (CST-6)
Location: ELK MOUND
Tornado F-scale: EF0
Property damage: 250.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS Storm Survey determined a tornado began on the south side of Elk Mound, near the intersection of I-94, and South Holly Road. The tornado moved northeast, crossing I-94, and continued into Chippewa County as it crossed 10th Street, south of 560th Avenue. Most of the damage was EF0 in Dunn County where a barn lost its roof, and trees were uprooted or blown down. The path length in Dunn County was 2.3 miles long, with a maximum width of 250 yards.

Tornado in CHIPPEWA, WISCONSIN
From 24-SEP-19 17:50:00 to 24-SEP-19 17:58:00 (CST-6)
Location: ALBERTVILLE
Tornado F-scale: EF3
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the continuation track of the tornado in Dunn County that crossed 10th Street, south of 560th Avenue. As the tornado tracked northeast, the tornado intensified to an EF3 where considerable damage occurred near County Road X, or Highway 29, and 30th Street, or County Road M. The tornado crossed Highway 29, and move northeast until dissipating east of 50th Street, north of County Road X.
Based on the NWS Storm Survey, the most significant damage occurred in Wheaton Township, or east of Elk Mound around the intersection of County Road M, and Highway 29. This area saw entire groves of trees leveled, some stripping of bark, and the destruction of several structures. The destruction of a metal building and two nearby homes were consistent with expected damage from winds of EF3 in strength.
The path length in Chippewa County was 4.7 miles, with a maximum width of 725 yards, or nearly a half mile wide. The maximum wind speed was near 150 mph.
There were three injuries with this tornado, but no fatalities.

Hail in ST. CROIX, WISCONSIN
From 24-SEP-19 18:34:00 to 24-SEP-19 18:34:00 (CST-6)
Location: HERSEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CHIPPEWA, WISCONSIN
From 24-SEP-19 19:26:00 to 24-SEP-19 19:28:00 (CST-6)
Location: CHIPPEWA FALLS
Magnitude: 56.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Several trees were blown down across 40th Avenue in Chippewa Falls. Some damage to homes also occurred.

Thunderstorm Wind in CHIPPEWA, WISCONSIN
From 24-SEP-19 19:28:00 to 24-SEP-19 19:28:00 (CST-6)
Location: CHIPPEWA FALLS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A large tree blew down in Chippewa Falls.