Hurricane Leslie was an Atlantic tropical cyclone that caused minor damage in Bermuda and Atlantic Canada in September 2012. The twelfth tropical cyclone of the annual hurricane season, Leslie developed from a tropical wave located nearly 1,500 miles (2,400 km) east of the Leeward Islands on August 30. About twelve hours later, it strengthened into Tropical Storm Leslie. Tracking steadily west-northwestward, it slowly intensified due to only marginally favorable conditions. By September 2, the storm curved north-northwestward while located north of the Leeward Islands. Thereafter, a blocking pattern over Atlantic Canada caused Leslie to drift for four days. Late on September 5, Leslie was upgraded to a Category 1 hurricane. However, due to its slow movement, the storm causing upwelling, which decreased sea surface temperatures (SST's), weakening Leslie back to a tropical storm on September 7. Category 1 hurricane: peak winds of 80 mph (70 knots), lowest pressure 968 mb. August 28 – September 12, 2012. Accumulated cyclone energy: 16.3. Wiki link Track: NOAA National Hurricane Center, HURDAT2 best track AL122012 (public domain).