Volcano Watch

What's in a name? In geology, plenty. Some of the biggest controversies erupt over terminology. For example, HVO scientists like to argue over terms...

While breakouts in the coastal area below Pu`u `O`o, attract renewed attention from scientists and visitors alike, seismologists at the U.S...

Scientists have all sorts of ways to remotely monitor volcanoes. Here at Hawaiʻian Volcano Observatory, for example, we use seismometers, GPS...

Lava erupting from the Pu`u `O`o vent is again spilling into the sea and adding new land along Kīlauea's shoreline to the delight of red-rock junkies...

Thomas Jaggar, the first director of the Hawaiʻian Volcano Observatory, from 1912-1940, probably never imagined that the gas compositions he measured...

As we await the next eruption of Mauna Loa, some HVO scientists have been looking at old eruption records which enable us to see trends that could...

The Hawaiʻian Volcano Observatory website (hvo.wr.usgs.gov) gets over half-a-million visitors a month. Most of those hits are folks checking out the...

In the last few days, two scientists stationed at the Hawaiʻian Volcano Observatory (HVO) have packed their bags and headed for Mount St. Helens...

As most readers probably know, Mount St. Helens has reawakened after 18 years of repose. Here are some of the many questions HVO has received in the...

Jim Kauahikaua has been named the new Scientist-in-Charge (SIC) of the Hawaiʻian Volcano Observatory, starting October 3. Jim is currently a...