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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.

Filter Total Items: 1795
Volcano Watch — Important lessons from a deadly lahar in New Zealand 60 years ago

Volcano Watch — Important lessons from a deadly lahar in New Zealand 60 years ago

During the course of an eruption, a volcano can produce a variety of hazards, such as lava flows, pyroclastic flows, and lahars (volcanic mudflows)...

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Volcano Watch — Gas numbers are up but emission rates are not

Volcano Watch — Gas numbers are up but emission rates are not

The gas emissions from Kīlaueaa volcano have been variable within a fairly steady range for the past few years; however, the numbers that we use to...

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Volcano Watch — January 2014—Hawai‘i Island's 5th annual Volcano Awareness Month

Volcano Watch — January 2014—Hawai‘i Island's 5th annual Volcano Awareness Month

During the past year, the USGS Hawaiian Volcano Observatory (HVO), like other federal agencies, dealt with the challenges of budget cuts...

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Volcano Watch — Fallen ash has a story to tell

Volcano Watch — Fallen ash has a story to tell

Last week we showed that Kīlauea has explosive eruptions that can carry volcanic ash (less than 2 mm or 0.08 in across) and small lapilli (2–64 mm or...

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Volcano Watch — What goes up must come down, at least at volcanoes

Volcano Watch — What goes up must come down, at least at volcanoes

In past Volcano Watches, we've emphasized a radically new way to view Kīlauea—as an explosive volcano. Though not explosive now, it was dominantly...

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Volcano Watch — Changing old seismological habits at HVO

Volcano Watch — Changing old seismological habits at HVO

At the U.S. Geological Survey's (USGS) Hawaiian Volcano Observatory (HVO), we focus on keeping up with the flow of data coming into our systems and...

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Volcano Watch — Online tools help Hawai‘i breathe easier during trade wind time-outs

Volcano Watch — Online tools help Hawai‘i breathe easier during trade wind time-outs

We are currently sandwiched between the Halloween and Thanksgiving holidays as the inexorable march of time brings the winter festivals ever closer...

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Volcano Watch — Lake Waiau is shrinking fast

Volcano Watch — Lake Waiau is shrinking fast

About a year ago, a Volcano Watch article described recent changes at Lake Waiau, the tiny lake just below Mauna Kea's summit that is Hawai‘i's only...

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Volcano Watch — Innovation and vigilance keys to first 25 years of the Alaska Volcano Observatory

Volcano Watch — Innovation and vigilance keys to first 25 years of the Alaska Volcano Observatory

Earlier this year, the Alaska Volcano Observatory (AVO) completed its first 25 years of operation. It received widespread acknowledgement for its...

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Volcano Watch — First “official” Great Hawaii ShakeOut is a success

Volcano Watch — First “official” Great Hawaii ShakeOut is a success

On October 17, at 10:17 a.m., HST, thousands of Hawai‘i residents took part in the state’s first Great Hawaii ShakeOut. The Hawaiian Volcano...

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Volcano Watch — After 50 years, a renewed effort to drill to the Moho

Volcano Watch — After 50 years, a renewed effort to drill to the Moho

The Earth's surface, oceans, and atmosphere are readily accessible to direct exploration.

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Volcano Watch — Volcano Watch for October 10, 2013

Volcano Watch — Volcano Watch for October 10, 2013

The Hawaiian Volcano Observatory will remain operational during the lapse of federal government appropriations.

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