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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 — Kaho`olawe was also a volcano once

Volcano Watch — Kaho`olawe was also a volcano once

You may have read in the news lately about the island of Kaho`olawe, the target isle. After suffering years of degradation, first by feral goats, then...

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Photo and Video Chronology - Kīlauea - April 9, 2004

Photo and Video Chronology - Kīlauea - April 9, 2004

Pu`u `O`o's crater, flank, and upper Mother's Day flows

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Volcano Watch — Glowworm glows when Earth quakes

Volcano Watch — Glowworm glows when Earth quakes

Seismometers located across the island detect earthquakes and radio the electronic signals back to HVO. The arrival of the signals at HVO might seem...

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Photo and Video Chronology - Kīlauea - April 6, 2004

Photo and Video Chronology - Kīlauea - April 6, 2004

Pu`u `O`o's crater

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Photo and Video Chronology - Kīlauea - April 2, 2004

Photo and Video Chronology - Kīlauea - April 2, 2004

Pu`u `O`o crater and `a`a-pahoehoe

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Volcano Watch — Where did all the magma go when Kīlauea's caldera formed?

Volcano Watch — Where did all the magma go when Kīlauea's caldera formed?

If a sinkhole collapses in your back yard, where and how did the stuff disappear? Did an underground opening already exist (such as a lava tube), did...

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Photo and Video Chronology - Kīlauea - March 26, 2004

Photo and Video Chronology - Kīlauea - March 26, 2004

March 20 breakouts and Kuhio flow

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Volcano Watch — The 20th anniversary of the Mauna Loa eruption of 1984

Volcano Watch — The 20th anniversary of the Mauna Loa eruption of 1984

March 25 marks the 20th anniversary of the most recent eruption of Mauna Loa. The eruption was preceded by roughly three years of increasing numbers...

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Photo and Video Chronology - Kīlauea - March 22, 2004

Photo and Video Chronology - Kīlauea - March 22, 2004

Bright glow above flow field as seen from end of Chain of Craters Road

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Photo and Video Chronology - Kīlauea - March 21, 2004

Photo and Video Chronology - Kīlauea - March 21, 2004

Distant lava flow viewed from Pu`u Huluhulu

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Photo and Video Chronology - Kīlauea - March 19, 2004

Photo and Video Chronology - Kīlauea - March 19, 2004

Pu`u `O`o and pahoehoe

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Volcano Watch — Global reach of volcanic gases

Volcano Watch — Global reach of volcanic gases

When we think of the negative impact that volcanoes have on people, the local geographic area of the eruption generally comes to mind. Ash, lava, and...

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