At 5:36 p.m. on Good Friday March 27, 1964 the biggest earthquake in North America hit Miners lake in Northern Prince Williams Sound. The 1964 earthquake cost Alaska millions of dollars. A lot of buildings were destroyed. At first the earthquake was thought to be a 8.5 earthquake on the Richter Scale. Now they have found out that it was a 9.2 earthquake. The earthquake let out ten million times the energy of an atomic bomb. It was eighty times as big as the 1906 earthquake in San Francisco. This earthquake was felt 700 miles away from where it hit.  One hundred thirty-one people were killed in the 1964 earthquake. Out of those killed, a great tsunami made by the earthquake killed 119 of them. Earthquake seismic stations all over the world knew about the earthquake when it happened.