Loihi volcano, United States, Hawaiian Islands: news & activity updates

On 10 and 11 May the Hawaiian Volcano Observatory (HVO) recorded increased seismic activity at the submarine volcano. Read allSince late May, the volcano hidden beneath the Pacific south of Big Island has been showing markedly increased seismic activity. Several earthquake swarms were detected under the volcano. Read all A magnitude 4.2 earthquake was detected at Loihi volcano on 25 November. We will wait and see if the Hawaiian Volcano Observatory has any more information on this.An earthquake swarm occurred at Loihi during 10-11 September and two 13 September earthquakes may have also been part of the swarm. The two later earthquakes occurred at 0311 and 0839 and had magnitudes of 4.9 and 4.4, respectively. Most of the earthquakes from 10-13 September were ~12 km deep and located slightly S of the summit of the volcano. Read all On 10 September an earthquake swarm began at Loihi. The swarm began with a M 5 earthquake and was followed by M 3.5-4.5 earthquakes until at least 11 September. This was the most severe swarm at Loihi since July 1996, when the summit collapsed. Read all