Volcano Watch

Thirty-seven years after the May 18, 1980, eruption of Mount St. Helens, Washington, scientists, engineers, land managers, and Federal, State, and...

This mosaic of thermal images is basically a thermal map of the lava flow surface, and reveals the exact location of all the active surface breakouts.

What's up with Mauna Loa, and is any change in sight?

For information about Hawaiian volcanoes, a good place to start is the U.S. Geological Survey (USGS). Between its websites and publications, abundant...

The caldera was a dynamic place during the 300-plus years just before written history began at Kīlauea (in 1823), and the newly defined subdivisions...

The USGS Hawaiian Volcano Observatory (HVO) has a long tradition of innovation when it comes to the tools that we use to monitor the status and...

The longest-lived and most voluminous rift-zone eruption of Kīlauea Volcano in more than 500 years—the ongoing Pu‘u ‘Ō‘ō eruption—began in January...

Thermal cameras have been used by volcanologists around the world for many years to study volcanic processes and search for signs of impending...

Kīlauea has now passed the one-year anniversary of the episode 61g lava flow reaching the Pacific Ocean. But what was this busy volcano up to a decade...

On June 8, 2017, many Island of Hawai‘i residents were awakened by a sharp jolt just past 7 a.m. This natural wake-up call was caused by a magnitude-5...

July 26th marks the one-year anniversary of Kīlauea Volcano's episode 61g lava flow reaching the sea. And at this time, there's no indication that the...

The new "Geologic map of the northeast flank of Mauna Loa volcano, Island of Hawai‘i," the culmination of many years of work by Hawaiian Volcano...

With over 1,000 articles on almost every volcano topic imaginable, the Volcano Watch archive is a treasure trove of information on Hawaiian volcanoes...

This week's Volcano Watch is a photo essay featuring notable images from Kīlauea Volcano's two ongoing eruptions: East Rift Zone (Pu‘u ‘Ō‘ō), which...

Since the end of February 2017, HVO seismic analysts have noted a slight uptick in the numbers of earthquakes near Lō‘ihi.

Tim Orr accepted a research geology position at the Alaska Volcano Observatory (AVO) in Anchorage, so he's headed north to Alaska. 

Field engineers at the USGS Hawaiian Volcano Observatory (HVO) recently completed a multi-year effort to upgrade a subset of seismic stations at the...

On the Island of Hawai‘i, deformation is measured primarily with three techniques: tiltmeters, GPS (Global Positioning System), and InSAR...

Both volcanoes and landslides are important for landscape evolution in Hawaii and worldwide. In Washington State, an old legend makes the connection...

A new structure allows for a more efficient and consistent website, with simplified maintenance that leads to fewer broken links.