An earthquake hit Indonesia on April 6, 2010 and wounded 22 people. It caused some damage to buildings but not that much. There have been arguments among scientists on the exact magnitude, it is currently ranging from 7.2-7.8. The quake had a depth of 19.3 miles and the epicenter was located 125 miles northwest of Sibolga. It struck 30 miles into the Earth’s crust below the Indian Ocean, and there is a tsunami warning for parts of Sumatra. However a earthquake with a shallow depth of around 10 kilometers would create a tsunami, so the deeper the earthquake, the less likely a large tsunami will follow.