Great Alaska Earthquake Devastates Prince William Sound
On Good Friday, March 27, 1964, a magnitude 9.2 earthquake struck near College Fjord in Prince William Sound, Alaska, at 5:36 p.m. local time. The rupture along the subduction zone between the Pacific and North American plates lasted nearly five minutes, causing widespread ground deformation up to 38 feet vertically. Massive landslides, tsunamis reaching over 200 feet in some fjords, and fires destroyed coastal communities including Valdez, Seward, and Kodiak. The event killed 139 people, with most fatalities from the resulting tsunamis that also affected distant shores in California and beyond. It remains the most powerful earthquake recorded in U.S. history.
