Indian Ocean Tsunami Alert after Earthquake off the coast of Indonesia's Aceh Province
A tsunami watch was declared after two major earthquakes occurred off the coast of Indonesia's Aceh province on 11 April 2012. The first earthquake measured 8.6 on the Richter scale with an after shock with a 8.2 magnitude following two hours later. The 8.6 undersea earthquake was the largest "strike-slip" quake ever recorded where two sides of the fault slip horizontally past each.
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