Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. April 11, 2012 Magnitude 8.7 Earthquake Hits Off Indonesia Coast VOA News The U.S. Geological Survey says a huge earthquake has struck off the northern coast of Indonesia, sparking a tsunami warning in the Indian Ocean. The quake, which was given a magnitude of 8.7, hit about 500 kilometers southwest of Banda Aceh, the provincial capital and largest city in the province of Aceh. The massive quake that struck Japan last year was a magnitude 9.0. .