Volcano Watch

In the aftermath of Hurricane Katrina's devastation of the Gulf coast, there has been much discussion of the value of planning for worst-case...

Two questions commonly asked of any volcano are the age of its youngest eruption and the frequency of eruptive events. For the volcano that forms the...

We are familiar with the effects that volcanoes have on our atmosphere and climate. Previous Volcano Watch articles have discussed how emissions of...

Many Volcano Watch articles tell stories of bygone eras, stories literally squeezed out of rocks. Some of the stories about the more recent eruptions...

Pu`u Mahana is a famous attraction on the southeast coast of the island of Hawai`i. The literal translation of Pu`u Mahana is "warm hill." People who...

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...