Earthquake swarm under Mauna Kea volcano, Hawaii
An earthquake swarm occurred under Mauna Kea volcano (19.82 N, 155.47 W) in Hawaii on October 19, 2011. The largest earthquake was M4.5 at depth of 18 km, 9 km NE of the summit.Scientists say the earthquake was the largest in a cluster of about 20 earthquakes on the nor