08/31/2026
On November 18, 1929, the ocean suddenly turned deadly off the coast of Newfoundland.
A powerful magnitude 7.2 earthquake struck beneath the Atlantic Ocean south of Newfoundland.
The earthquake triggered a massive underwater landslide, which displaced an enormous amount of seafloor and generated a tsunami.
About two and a half hours later, waves slammed into Newfoundland’s Burin Peninsula.
In some narrow bays, the water surged as high as about 13 metres — more than 40 feet.
Homes were lifted from their foundations, fishing boats were swept away, buildings were destroyed, and more than 40 coastal communities were affected.
Twenty-eight people lost their lives.
The tsunami was recorded far beyond Newfoundland, reaching other parts of the Atlantic coast and even being detected across the ocean in Portugal.
It remains the deadliest earthquake-related tsunami known to have struck what is now Canada.
Had you ever heard about the 1929 Grand Banks tsunami?