Yes. I was in a power plant on one of the islands some years ago, we were about 300 yards from the beach. On one of the units there was a sign marking the "high water line" for a Tsunami that hit (I believe it was the '64). The sign was 12 ft. above the ground.
Curious story they told of the Tsunami: most of the deaths that occurred were not from the incoming wave, but the receding water, as locals had gone out to pick up fish left stranded and were swept out to sea.