Historical Earthquakes & Statistics

Earthquakes can strike any location at any time. But history shows they occur in the same general patterns year after year, principally in three large zones of the earth.
Since 1900, the earthquake in Chile on May 22, 1960, is the biggest in the World with magnitude 9.5 Mw.
Since 1900, the earthquake in Alaska on March 28, 1964, is the biggest earthquake in the United States, with magnitude 9.2 Mw.
You can perform an online earthquake catalog search.
The answer to this question is not as straightforward as it may seem. In order to most accurately answer it, we will rephrase the question four different ways: