Muichiro.T
Active member
As of March 2016, the strongest earthquake ever recorded in the United States was a magnitude-9.2 quake that hit Prince William Sound, Alaska, on March 28, 1964, known as Good Friday. 
The largest earthquake globally was even more powerful—a magnitude 9.5—striking Bio-Bio, Chile, on May 22, 1960. 
The largest earthquake globally was even more powerful—a magnitude 9.5—striking Bio-Bio, Chile, on May 22, 1960.