What is 1985 United States-Canada tornado outbreak?
[[File:1985-05-31_tornado_outbreak_map.PNG|thumb|Map of the confirmed tornadoes on May 31, 1985.]] The '''1985 United States-Canada tornado outbreak''' occurred in the [[United States]] and [[Canada]] on May 31, 1985. In the United States, [[tornado]]es struck the [[List of U.S. states|states]] of [[Ohio]], [[Pennsylvania|Pennyslvania]], and [[New York (state)|New York]], and in Canada it struck in the [[Provinces and territories of Canada|province]] of [[Ontario]]. It was the largest and most intense tornado to hit this region and the worst tornado outbreak in Ohio and Pennsylvania history. == United States == === Niles, Ohio/Wheatland, Pennsylvania === The most intense tornado moved through [[Niles, Ohio]] and [[Wheatland, Pennsylvania|Wheatland, Pennyslvania]] and was an '''F5'''. The tornado killed 18 people and injured 310, and this remains the only F5 to strike Pennsylvania and was the most violent tornado in the United States in 1985. The Niles, Ohio/Wheatland, Pennsylvania tornado began around 6:30&nbsp;p.m. and gathered strength as it headed towards [[Newton Falls, Ohio]], producing F3 and F4 damage to the town. No deaths or injuries were reported in Newton Falls due to all residents taking shelter. Homes were also destroyed in [[Lordstown, Ohio|Lordstown]]. It became an F5 later as it moved into Niles. Hundreds of homes in Niles were destroyed with the local shopping center leveled and several deaths occurred at the location. The tornado then crossed the state line into Pennsylvania, regaining its strength. 95% of the buildings in Wheatland were destroyed. The tornado weakened slightly as it moved towards Hermitage. 71 homes suffered damage or were destroyed. The tornado then destroyed homes in the Greenfield area before dissipating. Later on tornadoes broke out in southern New York, nobody was killed in the state but 20 people were injured in New York state. == Canada == The tornado action moved into southeastern Ontario producing 5 tornadoes between 5:40&nbsp;p.m. and 6:35&nbsp;p.m. Eastern Time.