News

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

During the 1950s, a decade of major change in volcano monitoring, the USGS Hawaiian Volcano Observatory (HVO) was moving from the mechanical into the...

This week marks the one-year anniversary of when the June 27th lava flow, named for the date in 2014 that it began erupting from Pu‘u ‘Ō‘ō on Kīlauea...

Scientists, civil authorities, and emergency managers from Chile and the U.S. met in California to discuss the challenges of effective volcanic hazard...

Continuous gas-monitoring site in Moku‘āweoweo Caldera, Mauna Loa.

New lava flows at Pu‘u ‘Ō‘ō

Does lava continue to flow exactly as it did on land or does it behave differently after it enters the ocean?

In early 1918, visitors swarmed to Kīlauea Volcano to see a splendid show. The molten lake in Halema‘uma‘u had been rising and the pit was almost full...

As part of our monitoring of subsurface activity at Mauna Loa, we recently conducted a series of measurements of the force of gravity at various...