The epicenter of the earthquake was 12.4 mi (20 km) north of Prince William Sound, 78 miles (125 km) east of Anchorage and 40 miles (64 km) west of Valdez.The focus occurred at a depth of approximately 15.5 mi (25 km).

Science Features: The 1964 Great Alaska Earthquake & Tsunami. 301-310, 1967 XXI, pp. On March 27, 1964, at 5:36 p.m. AKST (3:36 a.m. UTC), a fault between the Pacific and North American plates ruptured near College Fjord in Prince William Sound. A Study of the Source Mechanism of the Alaska Earthquake and Tsunami of March 27, 1964, Pacific Science, VOL. Geology. 301-310, 1967 The tsunami caused $5 million in damage, no small figure in those days. Fifty-eight residential and business properties were written off. XXI, pp. It was 50-years ago today, on the Good Friday of 1964, that a 9.2 magnitude megathrust earthquake hit the coast of Alaska, lifting the ocean floor by 15-metres and sending a series of tsunamis to the west coast of North America as far as northern California. The map shows the epicenter of the 1964 Great Alaska Earthquake (red star), caused when the Pacific Plate lurched northward underneath the North American Plate. Scientific Background. According to the U.S. Geological Survey, the earthquake registered 9.2 on the Richter scale and lasted fourand-a-half minutes. El Gran Terremoto de Alaska está considerado como el terremoto más intenso registrado en América del Norte y el segundo del mundo después del Terremoto de Valdivia en 1960.. Ocurrió el 27 de Marzo de 1964 y alcanzó la magnitud de 9,2 M W durando unos 4 minutos y medio. Most of … “I never even heard the alarms last night,” said Gardner, who still lives in Port Alberni but on higher ground than she did in March 1964 when the tsunami hit the Vancouver Island community. The 1964 Alaska earthquake, the strongest earthquake ever recorded in North America, struck Alaska’s Prince William Sound, about 74 miles southeast of Anchorage. The 1964 quake and the tsunamis played a role in the formation of the West Coast and Alaska Tsunami Warning Center, renamed the National Tsunami … It was the largest U.S. earthquake ever recorded, and a turning point in earth science. At 5:36 p.m. on March 27, 1964, a massive earthquake struck Alaska.