An outbreak of 30 tornadoes occurred on August 19, 2009. The strongest was rated EF3 and tracked just over 24 miles through parts of Sangamon and Logan Counties in Illinois.
Hurricane Danny came ashore near Pecan Island, LA on August 16, 1985. It quickly decreased in intensity as it tracked through the southeast. Numerous tornadoes were confirmed from August 15-17. Per a Monthly Weather Review article, there were 3 tornadoes on the 15th and 40+ on the 16th.
A tornado outbreak occurred on August 16, 1994 in association with the remnants of Tropical Storm Beryl. The topic of this summary is on one of those tornadoes: a strong F3 in Lexington County, SC.
It was a family of small tornadoes amidst straight line winds that covered a good 70 miles through parts of Lee, DeKalb, Kendall and Will Counties in Illinois on August 15, 1958. The SPC officially has this listed as one tornado with a path length of 74.5 miles. It was given a rating of F2.
This tornado developed in East Lansing and moved SE to near Dansville to north of Stockbridge and lifted near Unadilla. Thomas Grazulis in Significant Tornadoes notes this was not a continuous path but a skipping one. There were no recorded injuries but there was a fatality.
The path began just south of Kendall. A barn was destroyed and a home damaged. It moved into Juneau County and toward the town of New Lisbon. The Bader Trailer Courts were hit on the northern edge of town.