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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 — Be akamai—when in doubt, head mauka

Volcano Watch — Be akamai—when in doubt, head mauka

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...

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Volcano Watch — Scientific collaborations aid study of Kamoamoa fissure eruption

Volcano Watch — Scientific collaborations aid study of Kamoamoa fissure eruption

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...

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Volcano Watch — The first day of the Kamoamoa fissure eruption from one scientist's perspective

Volcano Watch — The first day of the Kamoamoa fissure eruption from one scientist's perspective

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...

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Volcano Watch — Why didn't draining of lava from Halema‘uma‘u cause explosions?

Volcano Watch — Why didn't draining of lava from Halema‘uma‘u cause explosions?

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...

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Volcano Watch — Kīlauea Volcano's March 2011 fissure eruption viewed by millions around the world

Volcano Watch — Kīlauea Volcano's March 2011 fissure eruption viewed by millions around the world

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

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Volcano Watch — Can a VMAP help you find your way on a voggy day?

Volcano Watch — Can a VMAP help you find your way on a voggy day?

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

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Volcano Watch — "Things are not always what they seem; the first appearance deceives many..."

Volcano Watch — "Things are not always what they seem; the first appearance deceives many..."

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

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Volcano Watch — The Pinatubo Effect: Can geoengineering mimic volcanic processes?

Volcano Watch — The Pinatubo Effect: Can geoengineering mimic volcanic processes?

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

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Volcano Watch — "What's in a name?"

Volcano Watch — "What's in a name?"

"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...

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Volcano Watch — Thousands saved by accurate eruption forecasts of Mount Merapi, Indonesia

Volcano Watch — Thousands saved by accurate eruption forecasts of Mount Merapi, Indonesia

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

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Volcano Watch — There's something in the way a volcano moves

Volcano Watch — There's something in the way a volcano moves

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

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Volcano Watch — Earthquakes provide warnings of volcanic activity

Volcano Watch — Earthquakes provide warnings of volcanic activity

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

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