The 7.7 <span about="#mwt67" data-mw='{"parts":[{"template":{"target":{"wt":"M","href":"./Template:M"},"params":{"1":{"wt":"w"}},"i":0}}]}' id="mwAU4" typeof="mw:Transclusion">M</span><sub about="#mwt67">w</sub><span about="#mwt67" typeof="mw:Entity"> </span><link about="#mwt67" href="./Category:Articles_using_Mw_magnitude_scale" id="mwAU8" rel="mw:PageProp/Category"/> <a href="https://en.wikipedia.org/wiki/1956_Amorgos_earthquake" id="mwAVA" rel="mw:WikiLink" title="1956 Amorgos earthquake">Amorgos earthquake</a> shakes the <a href="https://en.wikipedia.org/wiki/Cyclades" id="mwAVE" rel="mw:WikiLink" title="Cyclades">Cyclades</a> island group in the <a href="https://en.wikipedia.org/wiki/Aegean_Sea" id="mwAVI" rel="mw:WikiLink" title="Aegean Sea">Aegean Sea</a> with a maximum <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Mercalli_intensity_scale" id="mwAVM" rel="mw:WikiLink" title="Mercalli intensity scale">Mercalli intensity</a> of IX (<i id="mwAVQ">Violent</i>). The shaking and the destructive tsunami that followed left fifty-three people dead. A damaging M7.2 aftershock occurred minutes after the mainshock.