High Quality Content by WIKIPEDIA articles! Hurricane Leslie was a long-lived tropical cyclone that spent several days meandering near Bermuda before striking Atlantic Canada. The twelfth tropical cyclone and twelfth named storm of the 2012 Atlantic hurricane season, Leslie developed from a tropical wave located more than 1,100 miles (1,800 km) east of the Windward Islands on August 30. About six hours later, it strengthened into a tropical storm. Tracking steadily west-northwestward, Leslie slowly intensified due to only marginally favorable conditions. By September 2, the storm curved north-northwestward while located north of the Leeward Islands. Thereafter, it began moving erratically, executing a small cyclonic loop between September 3 and September 4. Late on the following day, Leslie was upgraded to a Category 1 hurricane. However, due to its slow movement, the storm causing upwelling, which decreased sea surface temperatures, weakening Leslie back to a tropical storm on September 7. The storm drifted until September 9, at which time it accelerated while passing east of Bermuda. Slight re-intensification took place as Leslie transitioned into an extratropical cyclone as it passed over Newfoundland on September 11.