1964 Alaska EQEverything stopped.  Time stopped. Electric clocks on walls in Anchorage shut down at 5:36 p.m. on March 27, 1964, the second largest ever recorded at magnitude 9.2.

The ground shook for four to five minutes, roughly twice through “I Want to Hold Your Hand,” the Beatles No. 1 song that year. With the U.S. and the USSR facing off in the Cold War, some thought the Russians had attacked. The quake produced a tsunami that wreaked havoc along the West Coast. Overall damage was estimated at $2.3 billion in 2014 dollars. The quake and resulting tsunamis killed 131 people.

http://www.usgs.gov/newsroom/article_pf.asp?ID=3840

http://www.washingtonpost.com/national/health-science/great-alaska-earthquake-shook-alaska-50-years-ago/2014/03/26/60aa1f80-b4bb-11e3-bab2-b9602293021d_story.html