News

Despite two centuries of scientific study, basic questions persist about geysers—why do they exist? What determines their behavior?

USGS scientists hiked to the summit of Mauna Loa, where they checked on HVO's monitoring instruments and realigned an antenna that allows webcam...

Lava delta at Kamokuna ocean entry is rebuilding

With funding from USGS data rescue initiatives, HVO scanned seismograms from a number of significant earthquakes and seismic sequences. Since last...

Kamokuna lava delta: collapse on May 3 and how it looked today

May is Volcano Preparedness Month in Washington, providing residents an opportunity to become more familiar with volcano hazards in their communities...

On June 13, 1950, Honolulu was suddenly blanketed by the thickest haze seen since recordkeeping began there in 1906.

Delta at the Kamokuna ocean entry slowly growing

Ben Gaddis was recently honored by the U.S. Geological Survey for his many years of service as HVO's volunteer photo archivist.

Small delta at the ocean entry