Volcano Watch

The steady stream of lava cascading down the slopes above Kalapana village died out shortly after March 5 this year, when the spectacular Kamoamoa...

On April 2, 2011, at 11:11 a.m. HST, a magnitude-3.6 earthquake occurred 9 km (5 mi) southwest of Volcano Village. Following such an earthquake, the...

"Trial by fire" wasn’t how Wes Thelen planned to start his job as the new Seismic Network Manager for the USGS Hawaiian Volcano Observatory, but that...

By now, everyone is familiar with the magnitude-9.0 (M9.0) earthquake and tsunami that devastated Japan on March 11, 2011, and arrived at Hawai‘i...

In early March, a new phase of Kīlauea's east rift zone eruption occurred as lava erupted in the Kamoamoa area, between Nāpau Crater and Pu‘u ‘Ō‘ō...

HVO scientists were shaken out of their weekend routine when, at 1:42 p.m., on Saturday, March 5, 2011, the seismic tremor alarms started and, at 2:16...

The rapid draining of lava from the pit in Halema‘uma‘u on March 5 occasioned worst-case concerns of explosive eruptions at Kīlauea's summit. Thank...

On Saturday afternoon, March 5, 2011, automatic alarms signaled increased seismic activity at Kīlauea and tiltmeter records showed rapid deflation of...

Vog is made up of two principal components—sulfur dioxide gas, emitted by the active Kīlauea volcano, and acid sulfate aerosols, produced by a...

The Hawaiian Islands are home to numerous beautiful landforms. The islands themselves are volcanoes, but these volcanoes are speckled with secondary...

Twenty years ago, Mount Pinatubo awakened from a long sleep to produce Earth's second largest eruption in more than half a century. Volcanologists...

"That which we call a rose by any other name would smell as sweet." The Kīlauea version of this Shakespeare quote could be "That which we call an...

Mount Merapi volcano in central Java, Indonesia, began erupting explosively on October 26, followed by extrusion of lava in the summit crater, and...

Over the past four weeks, we have discussed how scientists monitor volcanoes using geophysics, geology, gas geochemistry, and seismology. As we reach...

This week, we continue our series of Volcano Watch articles on volcano monitoring with a discussion of seismic techniques.

As part of Volcano Awareness Month (January 2011), the Hawaiian Volcano Observatory is devoting this month's Volcano Watch column to a discussion of...

In recognition of Volcano Awareness Month (January 2011), this column is exploring the different techniques used by Hawaiian Volcano Observatory (HVO)...

During this first week of 2011, the Hawaiian Volcano Observatory (HVO) wishes everyone a Hau`oli Makahiki Hou! This week also marks the 28th...

Shortly after dark on December 16, 1919, a bright meteor streaked over Kīlauea like a fireball and exploded southwest of the summit. The concussion—a...

Stop smoking. Exercise more. Lose weight. These pledges to improve physical well-being rank high on lists of popular New Year's resolutions. But there...