News

This timelapse sequence of webcam images over a 24-hour period shows a typical day at the summit of Mauna Loa. 

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.2 earthquake on Saturday, April 27, 2019, at 5:26 p.m. HST.

Webcam check at Halema‘uma‘u

May 3, 2019, marks the one-year anniversary of the start of Kīlauea Volcano's 2018 lower East Rift Zone eruption. Over the past year, USGS Hawaiian...

Routine visit to Mauna Loa summit.

Yellowstone Volcano Observatory staff gathered in Bozeman, Montana to discuss how to better monitor changes in the thermal areas of Yellowstone...

Details about two upcoming talks presented by HVO scientists on April 23 and May 2 are posted.
 

Many first-time visitors to Yellowstone National Park have heard about a "supervolcano" but, expecting a Rainier-like volcanic peak, often wonder...

MultiGAS instruments monitor volcanic gases at the summit

HVO scientists inspect monitoring instruments on Mauna Loa.