August 28
- 1884 – An F4 tornado moved across Sanborn, Miner, and Hanson Counties, South Dakota, killing one person. This tornado was photographed near Forestburg in what is widely reported as the first ever photo of a tornado. However, another tornado was photographed earlier that year near Garnett, Kansas.
- 1973 – An F4 tornado touched down near Canaan, New York and moved into West Stockbridge, Massachusetts, killing four people. Three of the deaths were in the destruction of a large truck stop, where fully-loaded semi trailers were rolled and a car was found 20 feet (6 m) up a tree.
- 1990 – A devastating F5 tornado hit Plainfield, Illinois, killing 29 people and injuring more than 350. Ted Fujita assigned an F5 damaged based on severe ground scouring and extreme damage to vegetation. Three people died at Plainview High School one day before classes were scheduled to start.
August 29
- 1910 – An F2 (possibly F3) tornado destroyed a large portion of Heaton, North Dakota, killing two people. A house was reported carried 300 feet (90 m) while ten people inside were uninjured.
- 1992 – An F3 tornado struck Wautoma, Wisconsin, destroying 48 homes and damaging about 400. with damage costing $10 million. One person was killed when here trailer home was thrown several hundred feet, and 30 others were injured.
- 2005 – Hurricane Katrina made landfall on the United States Gulf Coast, resulting in the most active phase of its associated tornado outbreak as 39 tornadoes touched down. An F2 tornado killed one person and approximately one million chickens, along with other livestock, near Glenloch, Georgia.
August 30
- 1971 – An F2 tornado hit Tempe and Mesa, Arizona in the Phoenix Metropolitan Area, destroying several homes and causing significant damage to others. Forty-one people were injured, mostly from flying glass.
- 1974 – A series of tornadoes touched down in the vicinity of Great Bend, Kansas, which mostly remained over open country. One large tornado was captured on film near Ash Valley in some of the best-known tornado footage of the twentieth century. While this tornado only produced F1 damage, analysis of the film indicated winds in the F2 range near the ground and in the F3 range aloft.