Volcano Watch

Petrology is literally the "study of rocks," and looking carefully at the rocks coming out of a volcano is necessary in order to understand what's...

On May 21, 2010, Kīlauea Volcano's ongoing eruption reached a milestone:
10,000 days!

At HVO's Monday meeting, geologist Tim Orr updated the staff on current eruption conditions at Kīlauea's summit, east rift zone vents and flow field.

An Icelandic volcano was prominently featured in March and April's news, first for its gentle, tourist-friendly eruptions, and later for its...

Volcano Watchers may pride themselves on having witnessed a variety of lava flows, but how many can say they've seen flowing molten sulfur? It happens...

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...

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...

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...

Alert observers of Kīlauea ongoing summit eruption often note the changing character of the ever-present plume emerging from Halema`uma`u. Sometimes...

The magnetic field surrounding the Earth protects it and all living things upon it from charged particles ejected by the sun.

Long-time Kīlauea Volcano watchers know the drill when the supply of magma to the active vent on the volcano's east rift zone is interrupted...

In the early hours of Monday, February 1, 2010, , a swarm of microearthquakes began to occur on the south flank of Kīlauea volcano.

As Volcano Awareness Month nears its end, we conclude our look at volcanoes and society by exploring the cinematic treatment of volcanoes over the...

In the previous two weeks, we examined the role that volcanoes have played in both religion and art. Today, we discuss the influence of volcanoes on...

In celebration of Volcano Awareness Month (January 2010), we examine the influence of volcanoes on human society, beginning last week with religion...