The Monday Turkey earthquake killing at least 7900 had a  magnitude of 7.8 .  Of course, no tsunami and no nuclear disaster.  The  largest earthquakes  ever: 1. Valdivia, Chile 22 May 1960 (magnitude 9.5) This earthquake killed 1655 people, injured 3000 and displaced two million. It caused US$550 million damage in Chile, while the   tsunami   that it spawned caused deaths and damage as far away as Hawaii, Japan and the Philippines. The 'rupture zone' of the quake was more than 1000 km long. Two days after the initial quake, the nearby volcano Puyehue erupted, sending ash and steam up to 6 km into the atmosphere over a period of several weeks.   2. Prince William Sound, Alaska 28 March 1964 (magnitude 9.2) Compared to the Chilean earthquake, this earthquake was less damaging: the resulting tsunami took 128 lives and caused overall US$311 million in damage. The earthquake was felt mainly over Alaska, as well as some places in Canada, while the tsunami created by it caused damage