It was significantly affected by the 12 January 2010 earthquake. On 20 January a strong aftershock of magnitude 5.9 Mw struck Haiti. The U.S. Geological Survey reported that its epicenter was almost exactly under Petit-Goâve. The U.S. Geological Survey initially reported that the magnitude of the aftershock was 6.1, but they later revised that figure to 5.9