News

Regular visitors to HVO's daily update Web page might notice what seems like a minor change in one of Kīlauea two ongoing eruptions. While sulfur...

Wednesday, April 14, 2010, 7:37 a.m., Hawaii Standard Time: "Uh. Oh, oh. Did you feel that? It felt like an earthquake."

All of us lose something as we age, and, about 500 years ago, Kīlauea lost its top. The summit collapsed to form a precipitous hole, known as a...

This swarm is now the second largest recorded swarm at Yellowstone. It was longer (in time) and included more earthquakes than last year's swarm...

April 2010 marks the 70th anniversary of Mauna Loa's third longest summit eruption in recorded history. The 134-day-long eruption in 1940 has been...

What volcanic locale do the following characteristics describe?

This past Friday, March 19, marked the second anniversary of Kīlauea ongoing summit eruption in Halema`uma`u Crater. After 25 years without eruptive...

Several geologic processes contribute to subsidence along Kīlauea coast - the island of Hawai‘i is sinking at a rate of a few millimeters (fractions...

A magnitude-4.5 earthquake was located on the northeast flank of Mauna Kea by the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) on...

May 22, 2010, marks the 50th anniversary of the 1960 magnitude-9.5 Chilean earthquake, which was the largest earthquake worldwide in the last 200...