long track tornado was found in Tazewell County. This tornado touched down initially 3 miles southwest of South Pekin around 9:45 PM. (A tornado warning for Tazewell County had been in effect since 9:15 PM). It was initially of F0 intensity (winds less than 73 mph) and was about 50 yards wide. The tornado moved northeast, and strengthened rapidly to F2 intensity about 2 miles southwest of South Pekin, as it crossed Highway 29. It continued to strengthen, and was at F3 intensity (estimated winds of 200 mph) as it went through South Pekin at 9:50 PM. At this point, the tornado was a quarter mile wide. It remained F3 intensity for about 2.5 miles, although the width decreased to 200 yards. There were 23 injuries reported in South Pekin.
The tornado continued on the ground at F2 intensity to a point about 1.5 miles northeast of Groveland, gradually becoming smaller and only 100 yards wide. West of Morton, the tornado weakened to F1 intensity and was only 50 yards wide. The tornado then turned more to the north-northeast, and crossed I-74 at the I-155 intersection around 10:05 PM. Just beyond this intersection on the northwest side of Morton, the tornado quickly strengthened back to F2 intensity and severely damaged a concrete plant and the Cape Cod Apartment complex. After exiting the complex, the tornado gradually weakened back to F1 strength and dissipated on the far northern edge of Morton. There were 8 injuries in Morton, including in a vehicle on I-74.
This tornado was on the ground for 19 miles, and reached a maximum intensity of F3 (200 mph), with a maximum width of 1/4 mile in the city of South Pekin.
A second tornado then developed in Tazewell County 3 miles north of Morton, around 10:16 PM. It was on the ground for 1 mile, and lifted and dissipated 4 miles north northeast of Morton. It was rated F1 (100 mph) and was 100 yards wide.