Maunaloa volcano, Big Island, Hawai'i: news & activity updates

Mauna Loa volcano (Hawai'i) - earthquake swarm as possible sign of gradual reawakening

A small earthquake swarm occurred last week under the volcano. During 5-7 September, HVO detected about 350 small earthquakes up to magnitude 2.4 in a tightly clustered area at about 7 km depth west of the summit caldera. Only about 25 were strong enough to be located (map). Read all

Mauna Loa volcano (Big Island, Hawai'i) activity update

Very weak unrest in the form of inflation and seismic activity continues at the largest active volcano of our earth, which has not erupted since 1984. However, this activity is not strong enough to justify a raise of the alert level from green "normal" to yellow "unrest". There is currently no sign that Mauna Loa will erupt any time soon. Read all

Mauna Loa volcano (Big Island, Hawai'i) activity update: weak uplift and weakly elevated seismicity

The latest update of the USGS mentions that minor inflation of a shallow magma reservoir beneath Mauna Loa may be occurring. Seismicity rates were slightly elevated. However, the level of observed seismicity is far from alarming and the alert level remains at green. No eruption is expected in the near future. Read all