When Was The Strongest Earthquake Ever Recorded To Hit Alaska?

When Was The Strongest Earthquake Ever Recorded To Hit Alaska? At 10:15pm Alaska time on July 28, a magnitude 8.2 earthquake struck offshore of the Alaska Peninsula, the largest U.S. earthquake in 50 years. The Chignik Earthquake depth was approximately 28.5 miles, an intermediate-depth earthquake. Did the 1964 Alaska earthquake cause a tsunami? The 1964