The <a href="https://en.wikipedia.org/wiki/1960_Valdivia_earthquake" id="mwATc" rel="mw:WikiLink" title="1960 Valdivia earthquake">Great Chilean earthquake</a>, measuring 9.5 on the <a href="https://en.wikipedia.org/wiki/Moment_magnitude_scale" id="mwATg" rel="mw:WikiLink" title="Moment magnitude scale">moment magnitude scale</a>, hits southern <a href="https://en.wikipedia.org/wiki/Chile" id="mwATk" rel="mw:WikiLink" title="Chile">Chile</a>, becoming the most powerful earthquake ever recorded.