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Daily updates about ongoing eruptions, recent images and videos of summit and East Rift Zone volcanic activity, maps, and data about recent earthquakes in Hawaii are posted on the HVO website. 

Volcano Watch is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory scientists and colleagues.

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Volcano Watch — Europeans wanted cash, not ash, from Iceland!

Volcano Watch — Europeans wanted cash, not ash, from Iceland!

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

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Volcano Watch — A Peculiar Flow from Sulphur Cone along Mauna Loa

Volcano Watch — A Peculiar Flow from Sulphur Cone along Mauna Loa

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...

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Volcano Watch — Is Kīlauea east rift eruption running out of gas?

Volcano Watch — Is Kīlauea east rift eruption running out of gas?

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...

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Volcano Watch — NetQuakes Offer More Community Partnering in USGS Seismic Monitoring

Volcano Watch — NetQuakes Offer More Community Partnering in USGS Seismic Monitoring

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

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Volcano Watch — What caused Kīlauea to lose its top in about 1500?

Volcano Watch — What caused Kīlauea to lose its top in about 1500?

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...

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Volcano Watch — 1940 was a momentous year for Mauna Loa - and for Thomas A. Jaggar

Volcano Watch — 1940 was a momentous year for Mauna Loa - and for Thomas A. Jaggar

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...

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Volcano Watch — Earth has just a handful of long-lived lava lakes

Volcano Watch — Earth has just a handful of long-lived lava lakes

What volcanic locale do the following characteristics describe?

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Volcano Watch — Kīlauea summit eruption turns two

Volcano Watch — Kīlauea summit eruption turns two

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

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Volcano Watch — It's Sinking in that the Island is Sinking

Volcano Watch — It's Sinking in that the Island is Sinking

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

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USGS HVO Press Release — Magnitude-4.5 Earthquake beneath Mauna Kea, Hawai‘i

USGS HVO Press Release — Magnitude-4.5 Earthquake beneath Mauna Kea, Hawai‘i

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...

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Volcano Watch — Golden anniversary of Chilean earthquake comes early

Volcano Watch — Golden anniversary of Chilean earthquake comes early

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...

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Volcano Watch — Kīlauea plume: now you see it, now you don't

Volcano Watch — Kīlauea plume: now you see it, now you don't

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

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