News

The third in a series of recorded talks by HVO staff that will be posted on our website throughout the month of January. These talks are presented as...

HVO scientists collect high-precision Global Positioning System (GPS) data to assess hazards and understand evolving processes at Mauna Loa.

The most recent page in Mauna Loa’s eruptive history was written in 1984. The eruption began in March of 1984, about a decade after the 1975 summit...

Mauna Loa erupted forty-six years ago this week, on July 5–6, 1975, in a 20-hour event with vents confined to the summit region (the area above 3,660...

The journey from volcanic repose to a climactic eruption is like a mystery movie that keeps you at the edge of your seat. The story is filled with...

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.5 earthquake located beneath the south part of the Island of...

Geodetic surveys measure the change in shape of our volcanoes due to changes in magma supply and storage. The USGS Hawaiian Volcano Observatory (HVO)...

A new USGS Hawaiian Volcano Observatory webcam provides views of Mauna Loa’s summit and Northeast Rift Zone. The webcam view is to the south from its...

Many people in Kaʻū have noticed the swarm of earthquakes taking place during the past few years. These earthquakes are happening in a zone that is 29...