Worst Earthquakes In Us History. Secondly, when was the last major earthquake in the united states? The three biggest earthquakes in united states history alaska:

32.2 vii this is the largest earthquake in the united states since the 1965 rat islands earthquake. Was on march 28, 1964, when a 9.2 magnitude quake struck prince william sound in alaska. The arrival of the tecumseh’s comet was followed by the new madrid earthquakes, the biggest earthquakes in american history, events that are linked to the black sun prophecy.