News

The USGS Hawaiian Volcano Observatory (HVO) detects tens of thousands of earthquakes each year. Currently, one of the most active areas of seismicity...

New USGS video posted online:  "Water appears in Halema‘uma‘u"

Let's ditch the overused, misrepresentative, and misapplied "supervolcano" term. Instead, let's call them "caldera systems."

The recently published "Geologic map of the central-southeast flank of Mauna Loa volcano" is the culmination of years of field work by the U.S...

YVO gets a lot of questions about whether Yellowstone, or another caldera system, will end all life on Earth. The answer is—NO, a large explosive...

HVO rebuilds and relocates Mauna Loa gas monitoring instruments

Continued slow rise of water at the bottom of Halema‘uma‘u

Even though Kīlauea Volcano's lower East Rift Zone eruption has been over for about a year, steam continues to appear in new places or reappear in old...

Halema‘uma‘u water pond on September 25—two months and still rising

HVO measures water table at Keller Well