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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 — Surviving a Tsunami

Volcano Watch — Surviving a Tsunami

With great sorrow and shock, the world is bearing witness to the horrendous effects of the earthquake and tsunami that occurred in the Indian Ocean...

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Photo and Video Chronology - Kīlauea - December 30, 2004

Photo and Video Chronology - Kīlauea - December 30, 2004

Murky day as 2004 staggers to its end

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Volcano Watch — Volcanic gas measurements on Mauna Loa are an expanded challenge

Volcano Watch — Volcanic gas measurements on Mauna Loa are an expanded challenge

Several recent Volcano Watch articles have discussed the difficult nature of making specific eruption predictions about Mauna Loa, the largest volcano...

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Photo and Video Chronology - Kīlauea - December 22, 2004

Photo and Video Chronology - Kīlauea - December 22, 2004

Breakout details, west arm of PKK flow

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Volcano Watch — All basalts are not born equal?

Volcano Watch — All basalts are not born equal?

Recently, an important volcanological meeting of minds took place in Pucon, Chile. It was the International Association of Volcanology and Chemistry...

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Photo and Video Chronology - Kīlauea - December 15-17, 2004

Photo and Video Chronology - Kīlauea - December 15-17, 2004

On-again off-again ocean entry

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Volcano Watch — New instruments on Mauna Loa detect changing inflation

Volcano Watch — New instruments on Mauna Loa detect changing inflation

In early December every year, thousands of earth scientists gather in San Francisco to present and discuss their latest findings. This meeting is...

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Volcano Watch — Seasonal surprises are not only in Santa's realm

Volcano Watch — Seasonal surprises are not only in Santa's realm

As winter solstice draws near, the seasonal tradition of illuminating this darkest time of year becomes more obvious. Already many homes, shops, and...

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Photo and Video Chronology - Kīlauea - December 3, 2004

Photo and Video Chronology - Kīlauea - December 3, 2004

June 25 vent and PKK lava

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Volcano Watch — To be or not to be a lava bench or delta

Volcano Watch — To be or not to be a lava bench or delta

What's in a name? In geology, plenty. Some of the biggest controversies erupt over terminology. For example, HVO scientists like to argue over terms...

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Photo and Video Chronology - Kīlauea - November 26, 2004

Photo and Video Chronology - Kīlauea - November 26, 2004

Day after Thanksgiving on the PKK flow

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Volcano Watch — Deep Mauna Loa seismicity continues

Volcano Watch — Deep Mauna Loa seismicity continues

While breakouts in the coastal area below Pu`u `O`o, attract renewed attention from scientists and visitors alike, seismologists at the U.S...

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