A colossal tsunami, measuring 1,578 feet (481 metres) and ranking as the second-highest ever recorded, struck Tracy Arm Fjord in southeastern Alaska on 10 August 2025. The wave was approximately the height of New York's Empire State Building.
Cause and Attribution
The powerful wave was triggered by a landslide, which scientists have directly linked to global warming. Retreating glaciers left the mountain's rock face unsupported, leading to the collapse that generated the tsunami.
Impact and Response
Despite its immense power, which violently stripped vegetation from the fjord's steep rock walls, no injuries were reported. The event occurred at 5:30 am when no vessels were present in the area.
Researchers reconstructed the event using aerial photographs, satellite and seismic data, and fieldwork, as there were no direct recordings of the tsunami. Scientists, including Dan Shugar, warned that such events are likely to recur. They noted that pre-landslide seismic activity could offer potential for future warning systems.
The tsunami's height and the remote location meant that while the environmental impact was significant, human casualties were avoided. The study underscores the growing risks associated with climate change in glaciated regions.
