was producing severe damage in Canada (northeastern Ontario and southern Quebec), an associated cold front led to significant damage in the US Midwest and Southern Ontario as it crossed the area later that same evening. There were dozens of reports of significant wind or tornado damage, especially in Michigan but also in southern Ontario, Wisconsin, Illinois, Iowa, and as far south as northern Missouri. The setup was similar along the long cold front, and the hot, humid air mass led to the damaging derecho, although the stronger derecho that affected areas well north of there formed much earlier that day in Upper Michigan just before noon local time. It had a clearly defined bow echo (squall line) formation, unlike these cells which were more fragmented. Southern Ontario Sweeping from west to east in the late-evening hours, the greatest concentration of damage was centred around Newmarket, Lake Scugog and the Kawartha Lakes region further to the east. Numerous trees and power lines were downed in those areas and one camper was killed (the second that day) when a tree crashed into a camping trailer at the Warsaw Caves Provincial Park, northeast of Peterborough. Official wind gusts reached 100 km/h (60 mph) at Pearson Airport near Toronto and 107 km/h (66 mph) at Peterborough Airport. Heavy storms also crossed Essex County in the southwest, associated with a southward moving line that hit much of lower Michigan. At least 70,000 people lost power in the south, bringing the total to at least 300,000 customers who lost power in Ontario that day. On July 19, 2006, Environment Canada confirmed two tornadoes hit a residential section of Newmarket. (See Tornadoes of 2006 article) Michigan The hardest-hit areas of Michigan appear to have been in the northern and central lower parts of the state, particularly in and around Oceana County. Several houses were severely damaged, and many others suffered various degrees of damage. In addition, the Oceana County Fairgrounds lost at least one of its buildings to the winds. At least one person was injured in the county. Extensive damage was reported in Benzie County. Wind speeds of 106 km/h (66 mph) were recorded in Saginaw. Agricultural damage was severe; many grape and cherry crops were heavily damaged or destroyed, especially in Antrim, Grand Traverse and Leelanau counties. Since the storm took place just as the fruit crops were attaining maturity, the storm's effect on farmers