Volcano Watch

After more than 18 months of dormancy, Kīlauea Volcano erupted early on the morning of May 31, 1954. The eruption was not specifically predicted, but...

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...