A powerful earthquake off the coast of Sumatra, Indonesia, on this day in 2004 sets off a tsunami that wreaks death and devastation across the Indian Ocean coastline. The quake was the second strongest ever recorded and the estimated 230,000 dead made this disaster one of the 10 worst of all time.
It was 7:58 a.m. when the tremendous quake struck beneath the Indian Ocean 160 miles west of Sumatra. Not only did it register at approximately a 9.3 magnitude (only the 1960 Chile earthquake measured higher at 9.5, though there may have been stronger tremors prior to the invention of seismographic equipment) and last nearly 10 minutes, the quake moved a full 750 miles of underwater fault line earth up to 40 feet. The movement of the earth--there is evidence that huge boulders weighing thousands of tons were pushed several miles along the ocean floor-- caused a massive displacement of water. It is estimated that the resulting tsunami had two times the energy of all the bombs used during World War II.