2019 Dayton tornado
| The tornado near peak intensity in northern Dayton | |
| Meteorological history | |
|---|---|
| Formed | May 27, 2019, 10:41 p.m. EDT (UTC−04:00) | 
| Dissipated | May 27, 2019, 11:13 p.m. EDT (UTC−04:00) | 
| Duration | 32 minutes | 
| EF4 tornado | |
| on the Enhanced Fujita scale | |
| Highest winds | 170 mph (270 km/h) | 
| Overall effects | |
| Fatalities | 1 indirect | 
| Injuries | 166 | 
| Damage | $500 million (2019 USD) | 
| Areas affected | Dayton and the wider Montgomery County, Ohio area | 
| Part of the Tornado outbreak sequence of May 2019 and Tornadoes of 2019 | |
On the night of May 27, 2019, a large and destructive tornado struck Dayton, Ohio as well as the surrounding suburbs of Brookville, Trotwood, Northridge and Riverside, injuring 166 people and indirectly killing one person. Part of a larger severe weather outbreak, the tornado was the first of two EF4-rated tornadoes to touch down during the outbreak. It was the first EF4 tornado in Ohio since the tornado that struck Millbury in 2010. Along the tornado's 18.17-mile (29.24 km) path through Montgomery County, the tornado was on the ground for 32 minutes, reaching a peak width of 1,050 yards (960 m) at times, and causing an estimated total of $500 million (2019 USD) in damage.