Mauna Loa is no longer erupting, Hawai’i
The eruption at Mauna Loa that started on November 28, 2022, ended on December 13. This was the first eruption at the world’s largest active volcano since 1984 (VEI 0).
Mauna Loa eruption – Lava flow crosses Mauna Loa Weather Observatory Road
The eruption of Mauna Loa volcano that started on November 28, 2022, in its Northeast Rift Zone continues, with several fissures and lava flows active.
Seismic activity beneath Mauna Loa increasing, Hawai’i
Seismic activity beneath the Mauna Loa volcano has been gradually increasing over the past 2 months. In addition, a small seismic swarm started on September 23, with most earthquakes in a cluster about 5 km (3.1 miles) wide and -2 to 1 km (-1.2 to 0.6 miles) below the surface. The Aviation Color Code is at Yellow and the Volcano Alert Level at Advisory.
Lava continues to erupt from multiple vents at Kilauea, sulfur dioxide emissions increase, Hawaii
Lava continues to erupt from multiple vents along the floor and western wall of Kilauea's Halemaʻumaʻu crater since September 29, 2021. As of October 3, 2021, all lava activity is confined within Halemaʻumaʻu in Hawai’i Volcanoes National Park….
HVO tracking changes at world’s largest volcano – Mauna Loa, Hawaii
Scientists at the USGS Hawaiian Volcano Observatory are tracking changes on the Mauna Loa, the world's largest volcano. This volcano is currently not erupting, but there have been signs of elevated unrest above known background activity since July 2019, when HVO…
Caldera collapse triggers large-scale volcanic eruptions
Researchers at NASA’s Jet Propulsion Laboratory in Southern California identified what triggers large-scale volcanic eruptions and the conditions that lead to them. Using data from the 2018 Kilauea eruption in Hawaii– its largest volcanic eruption in over 200…
Earthquake swarm under Mauna Loa volcano, Aviation Color Code remains at Yellow, Hawaii
A small swarm of shallow seismicity, that began at 11:00 UTC on March 18, 2021, is occurring beneath the upper Ka‘ōiki seismic zone, under Mauna Loa’s southeast flank and northwest of Kīlauea's summit, Hawaii. Mauna Loa Volcano is not erupting;…
Eruption continues at Kilauea with lava erupting from vents on the NW side of the crater, Hawaii
Lava activity at Hawai'ian Kilauea volcano is confined to Halemaʻumaʻu with lava erupting from vents on the northwest side of the crater, the Hawaiian Volcano Observatory (HVO) reported at 19:11 UTC on January 5, 2021. Early January 5 (UTC), the lava lake was…
Elevated seismicity at Mauna Loa volcano, Hawaii
Seismic activity increased on Mauna Loa's northwest flank on December 4, 2020, with M4.1 earthquake and clusters of small, shallow earthquakes occurring closely in time and location. The volcano is not erupting but the rates of deformation and seismicity have…
Deep recurring earthquakes detected beneath dormant Mauna Kea volcano, Hawai’i
USGS seismologists have detected deep long-period earthquakes beneath the dormant Mauna Kea volcano in Hawaii at depths of about 20 to 25 km (12 to 15 miles) occurring with surprising regularity every 7 to 12 minutes. While low-frequency earthquakes are not unusual,…
