Do earthquakes have seasons like hurricanes? Another strong earthquake has rattled Indonesia's capital. The quake had a preliminary magnitude of 6.4, a depth of 35 miles, and an epicenter some 180 miles southwest of Jakarta, the country's capital. Fortunately, according to a Meteorology and Geophysics Agency official, the earthquake wasn't strong enough to cause a tsunami. Earlier this month, a bigger quake left more than 1,000 people dead in western Sumatra.