Volcano Watch

After 18 years of relative quiet between 1987 and 2004, Mount St. Helens volcano began erupting again nearly one year ago with a small but spectacular...

Two pioneering volcanologists-Thomas Jaggar and Frank Perret-set up the first systematic monitoring station in Hawai`i's Kīlauea caldera in 1911. The...

"Curiouser and curiouser," said Alice after falling down the rabbit hole into Wonderland, and that's what some HVO researchers are saying about a late...

Each year the University of Hawai`i at Hilo and the Hawaiʻian Volcano Observatory run two training courses at the Centre for the Study of Active...

Volcanic sand dunes?-don't worry, these aren't the next disaster waiting to happen. They're merely another neat feature of volcanic landscapes...

Summer in Hawaiʻi - a season for school vacations, shave ice, and Japanese bon dances. Trade winds blow most of the time, which is good news for east...

The U.S. Geological Survey (USGS), in cooperation with the Emergency Management Office (EMO) in the Commonwealth of the Northern Mariana Islands...

Each of us has our own mental image of a volcano. For some, it may be a lofty, snow-capped peak like Mt. Rainier. For others, the horizon-dominating...

Lava flows spilling into the sea on the south coast of Kīlauea Volcano for the past several months have added nearly 30 acres of new land to Hawai`i...

The Hawaiʻian word "kipuka" refers to a variation or a change in form. Forest kipuka are formed when a continuous forested habitat on the slope of an...