Volcano Watch

In today's age of aerial photography, satellites, and drones, bird's-eye views of geologic features are taken for granted. A century ago, such...

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...