Relatively strong winds on the island caused hundreds of power outages and knocked down tree branches, electrical poles, and other debris.

Also in Newfoundland, strong winds from Leslie ripped off roofs, destroyed trees, and left 45,000 homes without power.

[1] A tropical wave, which was accompanied by a broad surface low pressure area, emerged into the Atlantic Ocean from the west coast of Africa late on August 26.

[2][4] Based on Dvorak satellite classifications and scatterometer surface wind data, it is estimated that Tropical Depression Twelve developed at 0000 UTC on August 30, while located about 1,495 miles (2,406 km) east-southeast of the northern Leeward Islands.

[2] By the early on August 31, the storm featured well-define outflow in all directions and the center of circulation was close to the main area of convection.

[9] Relentless wind shear caused Leslie to weaken to slightly to a 60 mph (95 km/h) tropical storm, despite sea surface temperatures (SSTs) exceeding 84 °F (29 °C).

Early on September 3, the storm decelerated and curved northwestward, while approaching a weakness in Bermuda high pressure ridge.

However, the slow movement of the storm caused upwelling – a process by which warm SSTs are replaced with colder waters.

As a result, Leslie slowly began to weaken and fell to tropical storm intensity by early on September 8.

[2] By early on September 9, the blocking pattern diminished as a broad mid- to upper-level trough and associated cold front moved off the East Coast of the United States.

[13] Throughout Bermuda, scattered power outages affected hundreds of residents and tree branches and other debris fell on roads; at least one street pole was toppled in Hamilton.

[14] At 0600 UTC on September 10, a tropical storm watch was issued from Indian Harbour southward to Stones Cove, Newfoundland, and from Fogo Island to Charlottetown.

[2] Due to winds up to 85 mph (137 km/h), Leslie ripped off roofs, destroyed trees, and left 45,000 homes without power, particularly on the Avalon Peninsula, in the southeast portion of Newfoundland.

[15] In Pouch Cove on the Avalon Peninsula, the storm destroyed a partially built house and damaged incomplete homes in the Pleasantville neighborhood of St.

[15] Later, the remnants of Leslie brought rainfall to Nunavut, bring 1.4 inches (36 mm) of precipitation to Iqaluit during a three-day period.