Tsunami-causing landslide in Alaska on August 10 was largest in decade, earthquake center finds

Tsunami-causing landslide in Alaska on August 10 was largest in decade, earthquake center finds

Sunday's massive tsunami-causing landslide in Southeast Alaska likely sent more than 100 million cubic meters of debris into an icy fjord and onto a prominent glacier in one of the largest slides in at least 10 years, according to analysis by the Alaska Earthquake Center. The center's rapid characterization and pinpointing of the landslide demonstrates the center's growing capability in a new area of real-time hazard analysis. The center, locate…

Massive Landslide Sparks 10-15 Foot Tsunami In Alaksa

On August 10th, 2025, the Alaska Earthquake Center received reports of a mysterious localized tsunami that produced waves of 10-15 feet. The tsunami occurred in the Endicott Arm area of Southeast Alaska, with waves reaching the 10-15 foot height near Harbor Island. No earthquakes had occurred in the area to cause the tsunami. Officials later determined that a major landslide collapsed onto the South Sawyer Glacier and Tracy Arm Fjord, about 60 m…

Massive landslide in Alaska triggers damaging tsunami with 10-15 foot waves

JUNEAU, Alaska – A landslide early Sunday morning in the Endicott Arm area of Alaska near the state's capital triggered a local tsunami with waves estimated to be up to 15 feet high. According to the Alaska Earthquake Center, people boating in the Endicott Arm area reported a mysterious local tsunami near Harbor Island. Three kayakers camping on Harbor Island reported losing most of their gear, but made it back to Juneau safely, the Earthquake C…