The collapse volume at the summit nearly matched the effused lava volume on the rift zone. In this regard, 1868 was a little ...

Scientists and concerned residents living in the vicinity of Hawaii's Mauna Loa volcano are continuing to keep an anxious eye on the world's largest active volcano that erupted on Sunday after 38 ...

The NOAA office in Hilo that supports that carbon dioxide sampling has been flagged for a possible lease cancellation.

Scientists lower Mauna Loa alert level, say eruption could end soon Scientists lowered the alert level for the Mauna Loa volcano on Hawaii's Big Island from a warning to a watch on Saturday and ...

There are two active volcanoes in Hawai'i Volcanoes National Park, Mauna Loa and Kilauea, but Kilauea is the real "must-see." A 4,000-foot-tall mountain, Kilauea has been active since Jan. 3 ...

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 ...

Kilauea and Mauna Loa updates, volcano photos, maps, recent earthquake information, and more. Email questions to askHVO@usgs.gov.