Two moderate earthquakes near Mauna Loa volcano, string of aftershocks, Hawai’i

Two moderate earthquakes near Mauna Loa volcano, string of aftershocks, Hawai’i

Heightened unrest continues under Mauna Loa, with two moderately strong earthquakes within 24 seconds on October 14, 2022, and a string of aftershocks that are still taking place. The unrest is likely caused by renewed input of magma into Mauna Loa’s summit reservoir system. The Alert Level remains at Advisory and the Aviation Color Code at Yellow.

Seismic activity beneath Mauna Loa increasing, Hawai’i

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.

Earthquake swarm beneath Kamaʻehuakanaloa (Lōʻihi) seamount likely the result of magma movement, Hawai’i

Earthquake swarm beneath Kamaʻehuakanaloa (Lōʻihi) seamount likely the result of magma movement, Hawai’i

The Hawaiian Volcano Observatory (HVO) has detected increased seismic activity beneath Kamaʻehuakanaloa (formerly known as Lōʻihi) seamount, south of the Island of Hawaiʻi over the past few days. The activity is likely the result of magma movement beneath Kamaʻehuakanaloa seamount and currently shows no sign of leading to an eruption. The last eruption at this volcano took place in 1996 (VEI 0).

Shallow M6.2 earthquake hits near the southwest coast of Island of Hawaii

Shallow M6.2 earthquake hits near the southwest coast of Island of Hawaii

A strong and shallow earthquake registered by the USGS as M6.2 hit near the southwest coast of the Island of Hawaii, U.S at 23:48 UTC on October 10, 2021 (11:48 HST). The earthquake was centered about 27 km (17 miles) south-southeast of Nāʻālehu at a depth of 35…

New eruption at Kilauea volcano, Aviation Color Code raised to Red, Hawaii

New eruption at Kilauea volcano, Aviation Color Code raised to Red, Hawaii

A new eruption began at Kilauea volcano's Halema‘uma‘u crater at approximately 01:20 UTC on September 30, 2021 (15:20 HST, September 29). As a result, the USGS Hawaiian Volcano Observatory (HVO) raised the Volcano Alert Level for ground-based hazards…

Strong earthquake swarm under Kilauea, Alert Level raised to Watch, Hawaii

Strong earthquake swarm under Kilauea, Alert Level raised to Watch, Hawaii

A swarm of earthquakes began beneath the south part of Kilauea caldera, Hawaii on August 24, 2021, with a particularly strong sequence that occurred at about 11:30 UTC, the USGS Hawaiian Volcano Observatory (HVO) reports. As a result, HVO has raised the volcano…

HVO tracking changes at world’s largest volcano – Mauna Loa, Hawaii

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…

Elevated seismicity and deformation at the summit of Mauna Loa volcano, Hawaii

Elevated seismicity and deformation at the summit of Mauna Loa volcano, Hawaii

While the largest volcano on Earth — Mauna Loa is not erupting, rates of deformation and seismicity at the summit remain slightly elevated and above long-term background levels. Other Mauna Loa monitoring data streams show no significant change in deformation rates…