Many residents remember Mauna Loa — the largest active volcano on Earth — roaring awake after decades of slumber with a dynamic summit and Northeast Rift Zone (NERZ) eruption in late 2022. Geophysical ...

March 27 marks the anniversary of the onset of Mauna Loa’s dramatic 1868 eruption, when lava flows from the Southwest Rift Zone severely impacted the Ka‘u district. However, this may not have been the ...

A magnitude 6.0 earthquake struck Hawaii's Big Island, causing widespread shaking but no eruption or tsunami. Authorities confirmed the quake was due to tectonic activity, not volcanic processes.

HONOLULU (AP) — Lava is shooting 100 feet to 200 feet (30 to 60 meters) into the air as Hawaii’s Mauna Loa, the world’s largest active volcano, erupts for the first time in nearly 40 years. For now, ...

Volcano Watch” is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory ...

Phoenix emphasizes that volcanology is a relatively new science, having only entered its modern era in the early 1980s. While eruptions themselves are impossible to predict, the science of keeping ...

The magma that comes out of Mauna Loa comes from a series of magma chambers found between about 1 and 25 miles (2 and 40 km) below the surface. These magma chambers are only temporary storage places ...

Two volcanoes are no longer erupting in Hawaii. The U.S. Geological Survey said Tuesday that Mauna Loa and Kīlauea have stopped erupting and "gas emissions are at near-background levels." Mauna Loa ...