Massive Alaska megatsunami was second largest ever recorded
A Mountain Fell Into the Sea in Alaska. The Wave Was Enormous. No One Was There.
What Happened
A megatsunami occurred in a remote fjord in Alaska, generating one of the largest waves ever recorded in modern history. It has been classified as the second largest megatsunami on record. The event was caused by a massive landslide — likely triggered by glacial retreat or seismic activity — sending an enormous volume of rock and ice into the water. Due to the remote location, there are no reports of casualties.
Historical Context
The largest megatsunami ever recorded also happened in Alaska — Lituya Bay in 1958, where a landslide generated a wave of approximately 524 meters (1,720 ft), the tallest wave in recorded history. It killed 2 people who were fishing in the bay. Megatsunamis are fundamentally different from seismic tsunamis: they are localized, caused by landslides or volcanic collapses, and don't travel across oceans. They are terrifying in scale but geographically contained. Alaska's fjords have been producing these events for millennia — the geology practically invites them. As glaciers retreat due to climate change, the frequency of landslide-triggered events in these regions is expected to increase, which is the legitimate long-term story here.
What's In Your Control
Whether you understand the difference between a megatsunami (localized landslide wave) and a seismic tsunami (ocean-crossing wave) — the distinction matters for your actual risk assessment. If you live or travel near Alaskan or glaciated fjord coastlines, awareness of landslide-risk zones is practical. Supporting climate research into glacial retreat is the one lever available to most people.
Does This Require Action?
Unless you live or boat in remote Alaskan fjords: awareness only. This is a remarkable geological event, not a public safety emergency. Permission granted to read this with wonder rather than fear.
Source: BBC
