Please visit HVO’s website for past Volcano Watch articles, Kilauea and Mauna Loa updates, volcano photos, maps, recent earthquake information, and more. Email questions to askHVO@usgs.gov.

Mauna Loa, on the Big Island of Hawaii – the largest active volcano on earth – recently erupted for the first time in nearly 40 years. The volcano had been showing signs of activity since ...

In the late hours of Nov. 27, 2022, Mauna Loa began erupting. Lava was visible on the west side of the Island of Hawaii, from Kailua-Kona to Waikoloa. Social media was ablaze with pictures and ...

This map shows Mauna Loa's eruption as of November 6, 2022. The lava front is advancing towards one of the island's major highways, the Daniel K. Inouye Highway, known locally as Saddle Road.

The Mauna Loa Observatory supports hundreds of measurements that are essential for scientists around the world working together to understand how the planet’s climate system is changing. The Mauna Loa ...

A magnitude 5.7 earthquake struck the world’s largest active volcano on Friday — Mauna Loa on the Big Island of Hawaii — knocking items off shelves in nearby towns but not immediately ...

Lava flow from Mauna Loa’s eruption, which began on Nov. 27, posed little danger to the surrounding communities, stalling about 1.7 miles from Daniel K. Inouye Highway.

Scientists have downgraded the alert for Hawaii's Mauna Loa, the world's largest active volcano, from a warning to a watch as its current behavior suggests it may stop erupting soon.

The eruption of the world’s largest active volcano – Mauna Loa in Hawaii – may soon come to an end, according to the US Geological Survey.

Mauna Loa, the world's largest volcano, began spewing molten rock Nov. 27 after being quiet for 38 years. Lava-viewers enjoyed the rare marvel of being able to see Kilauea erupting at the same time.

Mauna Loa's eruption has spiritual meaning for many Native Hawaiians, including its representation of the goddess Pele. Some found other events coinciding with the eruption to be a sign.