Volcano Watch

Since Mauna Loa began showing signs of renewed restlessness in mid-2002, we have put a lot of effort into improving our capability for detecting the...

As residents of Hawai`i, we are, for the most part, acutely aware of volcanic processes and products. This is especially true for those of us living...

Like much of the world, HVOers have been following the events surrounding hurricanes Katrina and Rita in the past months. Extreme phenomena like...

By day, the six vents arrayed across the crater floor of Pu`u `O`o emit copious clouds of steam and magmatic gas. Darkness reveals that many of them...

Almost exactly one year ago today, the first signs of reawakening were detected at Mount St. Helens in Washington. On September 23, 2004, a small...

Dallas Peck, one of the finest geologists to have matriculated at the Hawaiʻian Volcano Observatory, died August 21 in Fairfax, Virginia, at the age...

Recent reports in the local news media mention significant supplemental funding for the National Oceanic and Atmospheric Administration (NOAA) to...

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...

The HVO staff mourn the loss of one of our extended family. Dr. Robert (Bob) Decker, Scientist-in-Charge from 1979-1984, died at home in Mariposa...

When your professional gene pool is sufficiently small, as it tends to be in volcanology, you sometimes go a great distance to explore different ideas...

People tend to remember the dates of important events in their lives. In addition to anniversaries and birth dates, volcanologists remember the dates...