News

Water pond at Kīlauea summit continues to rise and enlarge

In late September 2019, East Hawai‘i residents with ocean views may have noticed an unusual ship—too small for a cruise ship, too big for a fishing...

HVO staff practice Drop, Cover, and Hold during the Great Hawaii ShakeOut

The backbone of Yellowstone's ground-based monitoring network consists of seismic stations, which detect earthquakes, and GPS (Global Positioning...

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