How many earthquakes occurred in 2009?
A total of 14,788 earthquakes occurred worldwide in 2009. This is according to the U.S. Geological Survey. This number does not include earthquakes with a magnitude less than 4.5 that happened outside of the U.S. The biggest earthquake occurred in the Samoa islands in September 29 with a magnitude of 8.1, while the deadliest occurred in Indonesia in September 30 with 1,117 fatalities.