Pedersen Glacier: Landslide Triggered Tsunami

News Release Date:
August 20, 2024

SEWARD, Alaska - On the Morning of August 7, 2024, at approximately 5:00 a.m. a landslide triggered tsunami washed over portions of Pedersen Lagoon near Aialik Bay (59.8842N, -149.7309W). No known injuries or fatalities were reported. A private lodge reported damage to boardwalk areas. A National Park Service campsite easement was impacted with damage reported to a food storage box.

At this point we have no degree of certainty about the potential for any future tsunami or magnitude. As such, visitors to the area should remain vigilant for any signs of an impending landslide or tsunami, including sounds of rockfall, rapid lowering of water levels, and unusual currents or wave behavior.

We recommend caution for those who visit or remain in the area in and around Pedersen Lagoon.

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