HONOLULU—A magnitude 5.0 earthquake was the strongest of a series of temblors that struck Friday on Hawaii’s Mauna Loa, the largest active volcano on the planet that scientists say is in a “state of heightened unrest.”
Smaller aftershocks followed, according to the U.S. Geological Survey.
The series started with a 4.6 magnitude quake seconds before the larger one, which the USGS previously reported as having magnitude of 5.1.
The first one was slightly offshore and south of the town of Pahala, followed by the larger quake just south of Pahala beneath a highway, the Hawaiian Volcano Observatory said in a statement….