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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: 1786
Volcano Watch — Volcanic hazards assessment and monitoring continue at Anatahan, Northern Marianas Islands

Volcano Watch — Volcanic hazards assessment and monitoring continue at Anatahan, Northern Marianas Islands

On May 10, 2003, Anatahan Volcano in the Northern Marianas Islands awoke for the first time in reported history and sent eruption cloud to heights...

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Volcano Watch — Thermal Activity in Yellowstone Sparks Increased Monitoring

Volcano Watch — Thermal Activity in Yellowstone Sparks Increased Monitoring

Norris Geyser Basin of Yellowstone National Park has long been recognized as the hottest and most changeable of Yellowstone's famous hydrothermal...

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Volcano Watch — Does lava erupted from Kīlauea leave a hole deep underground?

Volcano Watch — Does lava erupted from Kīlauea leave a hole deep underground?

Kīlauea has erupted about 0.13 cubic kilometers (170 million cubic yards) of lava yearly for more than 20 years. That's enough to fill almost 2 1/2...

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Volcano Watch — The 1840 Kīlauea eruption was big, spectacular, and made the Sand Hills

Volcano Watch — The 1840 Kīlauea eruption was big, spectacular, and made the Sand Hills

The 1840 eruption on Kīlauea's east rift zone was one of the most notable of the past 200 years. People reported a spectacle so awesome that "one...

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Volcano Watch — New instrumentation on Mauna Loa's southwest rift zone

Volcano Watch — New instrumentation on Mauna Loa's southwest rift zone

Last week, Maurice Sako and Kevan Kamibayashi, physical science technicians from the Hawaiian Volcano Observatory, spent three cold nights high on...

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Volcano Watch — Summertime along the Wailuku River - cool water, cool geology

Volcano Watch — Summertime along the Wailuku River - cool water, cool geology

On hot summer days in Hilo, many people visit the refreshing waters of the Wailuku River. In addition to offering scenic views, lush vegetation, and...

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Volcano Watch — A stone ice cream cone at the 1969 fissure along Chain of Craters Road

Volcano Watch — A stone ice cream cone at the 1969 fissure along Chain of Craters Road

An eruption on May 24, 1969, created a wonderful but underappreciated visitor attraction in Hawai`i Volcanoes National Park, accessible to almost...

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Volcano Watch — The age of youngest volcanic rocks varies greatly among the Hawaiian Islands

Volcano Watch — The age of youngest volcanic rocks varies greatly among the Hawaiian Islands

It's an easy question to answer, "how old is the youngest volcanic rock on the Big Island?" With Kīlauea in virtually continuous eruption, the...

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Volcano Watch — Awareness does not necessarily mean preparedness

Volcano Watch — Awareness does not necessarily mean preparedness

It was heartening to see several delegates at last week's Cities on Volcanoes 3 (COV3) conference who were former students of the Center for the Study...

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Volcano Watch — When ash flows like a fluid

Volcano Watch — When ash flows like a fluid

In response to the reawakening of Anatahan Volcano on May 10, seismologists installed a seismometer on the island on May 20. They returned on June 6...

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Volcano Watch — Cities on Volcanoes 3-an international conference with evening programs for the public

Volcano Watch — Cities on Volcanoes 3-an international conference with evening programs for the public

Many volcanoes are attractive places to live. Good soil, sweeping views, rugged beauty-all these features lure us to volcanic settings. Auckland and...

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Volcano Watch — Cooperative training by University of Hawai`i and Hawaiian Volcano Observatory

Volcano Watch — Cooperative training by University of Hawai`i and Hawaiian Volcano Observatory

This week the Hawaiian Volcano Observatory is cooperating with the University of Hawai`i to conduct a workshop in volcanology for graduate students...

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