in the traditional lake-effect snowbelts but does occasionally see lake-effect snow that originates over Lake Michigan. Snow cover is intermittent throughout the winter; on average there are 53 days each year with snow on the ground. There are typically three to five major snowfalls each winter. Windsor has the highest number of days per year with lightning, haze, and daily maximum humidex over of cities in Canada. Windsor is also home to Canada's warmest fall, with the highest mean temperatures for the months of September, October and November. Precipitation is generally well-distributed throughout the year. There are on average 2,261 sunshine hours per year in Windsor. Flooding and other emergencies Windsor experienced historic flooding in 2016, 2017 and 2019. In 2016, the mayor of Windsor, Drew Dilkens, declared a state of emergency because of the disastrous flooding that occurred. In spring of 2019 Windsor applied for disaster mitigation funding following widespread flooding. A previous state of emergency in Windsor was called in 2013 when a fire broke out at a plastic recycling warehouse. This state of emergency was called due to poor air quality caused by the fire. In 2017, Windsor was noted on Environment Canada's top 10 list of weather events. In late August 2017, Windsor faced a storm that left of rain in 32 hours. Tornadoes As the Canadian city with the highest number of days that experience severe thunderstorms and lightning, Windsor has historically been subject to tornadic activity. It is notable that Windsor is located in the middle of tornado alley. The strongest and deadliest tornado to touch down in Windsor was an F4 in 1946. Windsor was the only Canadian city to experience a tornado during the 1974 Super Outbreak, an F3 which killed nine people when it destroyed the Windsor Curling Club. The city was grazed by the 1997 Southeast Michigan tornado outbreak with one tornado (an F1) forming east of the city. Tornadoes have been recorded crossing the Detroit River (in 1946 and 1997), and waterspouts are regularly seen over Lake St. Clair and Lake Erie, especially in autumn. On April 25, 2009, an F0 tornado briefly touched down in the eastern part of the city, causing minor damage to nearby buildings, most notably a CUPE union hall. Two tornadoes (an F1 and an F2) touched down in the evening of August 24, 2016, causing damage in parts of Windsor as well as