News

Fumaroles are openings in the earth’s surface that emit steam and volcanic gases, such as sulfur dioxide and carbon dioxide. They can occur as holes...

The State of Hawaii has a long history of destructive earthquakes. More than 30 magnitude-6.0 or greater earthquakes have impacted the islands since...

Scattered breakouts remain active northeast of Pu‘u ‘Ō‘ō

Bottled soda, when opened suddenly after shaking, is commonly used as an analogy for volcanic eruptions. Perhaps the first use of this analogy for...

Panorama of the north rim of Mauna Loa's summit caldera; an HVO geologist checks Mauna Loa monitoring equipment.

Scientists at the U.S. Geological Survey Hawaiian Volcano Observatory have elevated the Volcano Alert Level for Mauna Loa from NORMAL to ADVISORY...

The USGS Hawaiian Volcano Observatory (HVO) changed the Volcano Alert Level and Aviation Color Code for Mauna Loa Volcano from NORMAL/GREEN to...

Mauna Loa earthquake and deformation data between 2010 and September 17, 2015.

Scientists at the U.S. Geological Survey Hawaiian Volcano Observatory have elevated the Volcano Alert Level for Mauna Loa from NORMAL to ADVISORY.

Photo and Video Chronology - Kīlauea - September 11, 2015