The USGS Hawaiian Volcano Observatory (HVO) detects tens of thousands of earthquakes each year.

The recently published "Geologic Map of the Central-Southeast flank of Mauna Loa Volcano" is the culmination of years of fieldwork by the US Geological Survey.

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 places.

Volcano observatories across the United States work together to ensure efficient and thorough monitoring of the nation's active volcanoes.

With more collaborative monitoring, we can collect more and higher quality data, and better understand how volcanoes work, including ours here in Hawai‘i.

During a reception in Arlington, Virginia, on June 26, 2019, Volcano Watch was awarded First Place in the NAGC's Electronic Publication category.

Scientists recently reanalyzed deformation data on Kīlauea’s south flank and found that only a few isolated portions of the Hilina fault system moved.

Routine laser rangefinder measurements indicate that the pond continues to rise.

Volcanoes on Hawai‘i Island played an important role in moon exploration, providing a training ground for astronauts who brought back the first lunar samples.

The slowly deepening pond of water on the floor of Halema‘uma‘u, the first in recorded history, has captured the interest of media and the public.