According to Honolulu Star Advertiser, The Pacific Tsunami Warning Center listed the magnitude as 8.1 and said “an investigation is underway to determine if there is a tsunami threat to Hawaii.”
But the U.S. Geological Survey said the quake was magnitude 8.2 and hit 56 miles (91 kilometers) east southeast of Perryville, Alaska.
“Based on all available data a tsunami may have been generated by this earthquake that could be destructive on coastal areas even far from the epicenter,” PTWC said. Based on the preliminary seismic data, the quake should have been widely felt by almost everyone in the area of the epicenter.
It might have caused light to moderate damage. Moderate shaking probably occurred in Perryville, Chignik Lake and Sandpoint.
Today's earthquake hit in almost the same area as the similarly strong magnitude 8.2 quake on 10 Nov 1938.