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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: 1785
Volcano Watch — Lava-flow hazards revisited

Volcano Watch — Lava-flow hazards revisited

Every day at the Hawaiian Volcano Observatory, we scan incoming data from field instruments that will warn of new volcanic activity on the island...

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Volcano Watch — Lights! Camera! Disaster!: Mixing fact and fantasy in the movies

Volcano Watch — Lights! Camera! Disaster!: Mixing fact and fantasy in the movies

Colossal natural disasters have been fodder for Hollywood movies long enough that we can recognize the basic recipe. A pinch of fact, a fistful of...

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Volcano Watch — You can't tell a book by its cover: interior improvements at HVO

Volcano Watch — You can't tell a book by its cover: interior improvements at HVO

Much of the work done by the HVO staff depends on field activities. Either scientists and technicians visit field sites to make observations and...

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Volcano Watch — Anatahan Volcano reawakens

Volcano Watch — Anatahan Volcano reawakens

On April 6, 2004, Anatahan volcano in the Commonwealth of Northern Marianas Islands (CNMI) awakened from five months of slumber since its first...

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Volcano Watch — Earthquakes rock uplifting area in Central Oregon Cascades

Volcano Watch — Earthquakes rock uplifting area in Central Oregon Cascades

A series of small earthquakes struck the Three Sisters volcanic center in the central Oregon Cascades on March 23-25. At the same time, staff members...

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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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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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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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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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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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Volcano Watch — Chronology of a volcanic disaster

Volcano Watch — Chronology of a volcanic disaster

The worst volcanic disaster of the 20th century occurred in 1902 on Martinique, an island in the French West Indies.

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Volcano Watch — Two tiny kipuka tell secrets about Kīlauea's past

Volcano Watch — Two tiny kipuka tell secrets about Kīlauea's past

About 2.5 km (1.5 miles) down the Hilina Pali Road in Hawai`i Volcanoes National Park are two tiny kipuka that help geologists decipher obscure parts...

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