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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 — Can We Forecast the Behavior in Halema‘uma‘u's Vent?

Volcano Watch — Can We Forecast the Behavior in Halema‘uma‘u's Vent?

If you have followed the HVO daily updates or tuned in to the Webcams over the past few months, you have probably seen that activity in the vent of...

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Volcano Watch — Evolving Lava Tube System Spawns Surface Flows that Reach the Ocean

Volcano Watch — Evolving Lava Tube System Spawns Surface Flows that Reach the Ocean

Dozens of small lava flows have moved down the pali and across the coastal plain of Kīlauea's south flank in the past several weeks as the nearly two...

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Volcano Watch — Lessons Learned from the Armero, Colombia Tragedy

Volcano Watch — Lessons Learned from the Armero, Colombia Tragedy

Late in the evening on November 13, 1985, most of those living in the Colombian town of Armero, on the shores of the river Lagunillas, were in bed...

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Volcano Watch — The Layered Earth Turns 100 Years Old

Volcano Watch — The Layered Earth Turns 100 Years Old

On October 8, 1909, an earthquake struck southeast of Zagreb, Croatia. Prior to this event, a number of seismographs had been installed in the region...

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Volcano Watch — One Man's Soil Is Another Man's Ash, Especially Around Pāhala

Volcano Watch — One Man's Soil Is Another Man's Ash, Especially Around Pāhala

"Pahala Ash," named for the town of Pahala, refers to soil deposits along the southeast portion of the island of Hawai`i. Pahala Ash was described by...

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Volcano Watch — Kīlauea's Emissions and Their Effects: It's All about Location

Volcano Watch — Kīlauea's Emissions and Their Effects: It's All about Location

A common saying in the real estate business is that three things matter regarding property: "location, location, location." The same might be said...

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Volcano Watch — Hualālai is Third Most Active Volcano in Hawai`i

Volcano Watch — Hualālai is Third Most Active Volcano in Hawai`i

The West Hawai`i Today issue for September 11, 2009, contained a letter to the editor titled "Hualālai is a real and present threat." The writer's...

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Volcano Watch — Ancient Hawaiians: Plenty of Oars but No Ores

Volcano Watch — Ancient Hawaiians: Plenty of Oars but No Ores

Most accounts of Captain Cook's first arrival in Hawai`i describe the Hawaiians' fascination with metal objects.

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Volcano Watch — Mount St. Helens' Eruption of 2004-2008 Described in Newly Published USGS Book

Volcano Watch — Mount St. Helens' Eruption of 2004-2008 Described in Newly Published USGS Book

It is placid these late-summer days at Mount St. Helens, the mainland U.S. volcano that began in 2004, a sluggish, relentless eruption that lasted for...

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Volcano Watch — Putting Kīlauea's Current Activity in Perspective

Volcano Watch — Putting Kīlauea's Current Activity in Perspective

Dr. Thomas L. Wright, former Scientist-in-Charge of HVO, spent the last two weeks in Hawai`i exchanging ideas and information with HVO scientists.

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Volcano Watch — Alaska's Summer Field Season for Volcanologists is Quickly Coming to a Close

Volcano Watch — Alaska's Summer Field Season for Volcanologists is Quickly Coming to a Close

Summer is traditionally the best field season for volcanologists to conduct a variety of work on restless and active volcanoes, especially in remote...

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Volcano Watch — Simple Tools Measure Amount of Volcanic Ash from Halema`uma`u

Volcano Watch — Simple Tools Measure Amount of Volcanic Ash from Halema`uma`u

What do 10 plastic buckets, a 1.5-inch paint brush, a small funnel, two restaurant heat lamps, and a simple weighing scale have in common? These...

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