The 1929 Grand Banks earthquake (also called the Laurentian Slope earthquake and the South Shore Disaster) occurred on November 18, 1929. The shock had a moment magnitude of 7.2 and a maximum Rossi–Forel intensity of VI (Strong tremor) and was centered in the Atlantic Ocean off the south coast of Newfoundland in the Laurentian Slope Seismic Zone. Earthquake The earthquake was centred on the edge of the Grand Banks of Newfoundland, about south of the island. It was felt as far away as New York City and Montreal. The quake, along two faults south of the Burin Peninsula, triggered a large submarine landslide displacing (). It snapped 12 submarine transatlantic telegraph cables and led to a tsunami that arrived in three waves. Newfoundland, Canada and Saint Pierre and Miquelon had the largest impact, both from the snapped 12 submarine cables, and the tsunami. This was Canada's largest submarine landslide ever recorded, up to 500 times the size of 1894 Saint-Alban subaerial slide. In 2002 Natural Resources Canada and the United States Geological Survey, created an intensity map by using the Revised Modified Mercalli scale. Tsunami The tsunami waves had an amplitude of , and a runup of along the Burin Peninsula. It destroyed many south coastal communities on the Peninsula, killing 27 or 28 people and leaving 1,000 or more homeless. All means of communication were cut off by the destruction, and relief efforts were further hampered by a blizzard that struck the day after. It was recorded as far away as Lagos, Portugal away, 06:47 after the earthquake. It took 2 hours and 23 minutes to strike Burin, Newfoundland, from the epicentre, and only two hours to be observed in Bermuda . Prince Edward Island Prince Edward Island felt the earthquake; at the time the intensity was rated at IV (Slight tremor) – VI (Strong tremor) on the Rossi-Forel scale. In PEI it ranged from an intensity of III (Weak) – V (Moderate). Saint Pierre and Miquelon In the then named French Republic Overseas territory of Saint Pierre and Miquelon, about west of the Burin Peninsula, people were awakened around 16:30h by the earthquake that lasted approximately one minute. At 17:20, the tsunami reached the island of Saint-Pierre, submerging the docks. The worst damage was reported on the island then named Île-aux-Chiens (meaning Island of the Dogs; till 1931), now known as L'Île-aux-Marins (The Island of the Sailors). The