Strong and deep earthquake M 7.4 struck Tonga
A strong and deep earthquake M 7.4 struck south of Tonga on May 23, 2013 at 17:19 UTC. By preliminary reports USGS measured depth at 171 km, EMSC is reporting 179 km. Epicenter was located at the sea, 255km (158mi) SW of Vaini, Tonga
