How many Pacific-wide tsunamis have struck the Hawaiian Islands in recent history?
In the 20th century, there were 13 significant tsunamis impacting Hawaii. These tsunamis were generated by earthquakes occurring along the geologically active margins of the Pacific basin. Maximum recorded runups were 55 feet on the Big Island and 54 feet on Molokai (see above) during the 1946 tsunami, and 53 feet in Kauai during the 1957 tsunami. The last hazardous Pacific-wide tsunami occurred in 1964.
