Late on August 29, Hurricane Edouard developed three concentric eyewalls, an unusual occurrence coinciding with an increase in strength to 140 mph (220 km/h). A mid-tropospheric trough turned the hurricane to the north to an area of unfavorable conditions, and Edouard weakened to a Category 3 hurricanes on August 31. On September 1, the hurricane passed about midway between Bermuda and Cape Hatteras, and turned to the north-northeast. Edouard continued to weaken as it turned to the northeast, and on September 2 passed about 95 mi (150 km) to the southeast of Nantucket, Massachusetts as an 80 mph (130 km/h) hurricane, its closest point of approach to the United States. Edouard weakened to tropical storm status on September 3, and became extratropical shortly thereafter while located to the south of Nova Scotia. As an extratropical storm, Edouard turned to the east, then moved around the periphery of a larger extratropical storm until becoming absorbed by the storm early on September 7.