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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: 1780
Volcano Watch — Are earthquakes on the rise?

Volcano Watch — Are earthquakes on the rise?

A heightened awareness of earthquakes usually follows large and destructive ones, like those occurring in Turkey and El Salvador in 1999 and 2001...

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Volcano Watch — What made the Ninole hills?

Volcano Watch — What made the Ninole hills?

A number of hills, elongate in an upslope-downslope (mauka-makai) direction, rise 30-425 m (100-1,400 feet) above the surrounding gentle slopes of...

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Volcano Watch — Forecasting Lava Flow Speeds

Volcano Watch — Forecasting Lava Flow Speeds

Wouldn't it be nice to have eruption forecasts as rich in detail as our current weather forecasts, watches, and warnings? "This is your Hawai'i County...

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Volcano Watch — Hawaiian volcanoes and their Olympic moments: tall, bigger, longer, and deeper

Volcano Watch — Hawaiian volcanoes and their Olympic moments: tall, bigger, longer, and deeper

Over the past couple of weeks, the international competition at the XIX Olympic winter games has captivated winter sports enthusiasts around the world...

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Volcano Watch — Rootless shields and hornitos

Volcano Watch — Rootless shields and hornitos

As many of you die-hard eruption fans already know, lava is no longer entering the ocean, for the first time since last May. The tube leading to the...

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Volcano Watch — Past magnetism helps understand Kialuea's explosive history

Volcano Watch — Past magnetism helps understand Kialuea's explosive history

Every year about Super Bowl time, Dick Fiske and Tim Rose, volcanologists from the Smithsonian Institution, join HVO's staff for 2-3 weeks to...

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Volcano Watch — Nyirangongo -- Could it happen here?

Volcano Watch — Nyirangongo -- Could it happen here?

At dawn on January 17, 2002, the residents of Goma, a city of 500,000 along the eastern border of the Republic of Congo, awoke to glowing red skies...

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Volcano Watch — Expansion of Alaskan Volcano monitoring program continues

Volcano Watch — Expansion of Alaskan Volcano monitoring program continues

In one of the most ambitious volcano-monitoring efforts ever undertaken, scientists of the Alaska Volcano Observatory (AVO) are moving ahead with...

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Volcano Watch — The 1859 eruption of Mauna Loa and its human impact

Volcano Watch — The 1859 eruption of Mauna Loa and its human impact

The 1859 eruption of Mauna Loa began in the evening of January 23. Following a brief summit eruption, an outbreak occurred high on Mauna Loa's...

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Volcano Watch — New Year - New Volcano Watcher

Volcano Watch — New Year - New Volcano Watcher

At this new calendar year, we welcome to our staff at the U S Geological Survey's Hawaiian Volcano Observatory our newest volcano watcher, Dr. Peter...

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Volcano Watch — Pu`u `O`o eruption is long but far from the longest

Volcano Watch — Pu`u `O`o eruption is long but far from the longest

It is hard to believe that the Pu`u `O`o eruption became 19 years old on January 3. 

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Volcano Watch — New ages show Haleakalā is a postshield volcano

Volcano Watch — New ages show Haleakalā is a postshield volcano

Haleakalā volcano, on Maui, is still in its postshield stage of volcanic evolution, as determined by 50 new isotopic ages. The volcano was long...

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