Volcano Watch

The wise old saying that a photograph is worth a thousand words certainly applies to one of the longest-running volcanic shows on Earth, the eruption...

Residents of east Hawai`i are finally getting some relief from nearly two months of intermittently poor air quality caused by sulfur dioxide (SO2) gas...

If you've been reading Volcano Watch or following the news from Washington State, you know that Mount St. Helens began erupting in early October 2004...

Lava viewers will be happy to hear that flows are entering the ocean again. Since January 31, we've had two widely spaced entries, one at West...

Io, the innermost of Jupiter's five major moons, is roughly the same size as Earth's moon. When Voyager 1 and 2 sped past Jupiter in 1979, scientists...

Sometimes you just don't know what you're going to find, and when you do find it, you're not quite sure what it is.

Along with the rest of the world, we at the U.S. Geological Survey's Hawaiʻian Volcano Observatory continue to follow the aftermath of the great...

With great sorrow and shock, the world is bearing witness to the horrendous effects of the earthquake and tsunami that occurred in the Indian Ocean...

Several recent Volcano Watch articles have discussed the difficult nature of making specific eruption predictions about Mauna Loa, the largest volcano...

Recently, an important volcanological meeting of minds took place in Pucon, Chile. It was the International Association of Volcanology and Chemistry...