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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 — Geologic hazards

Volcano Watch — Geologic hazards

The primary mission of the Hawaiian Volcano Observatory (HVO) is to evaluate earthquake and volcanic hazards and provide timely information to the...

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Volcano Watch — Lava tubes

Volcano Watch — Lava tubes

Lava flows can travel long distances if they develop insulating conduits for transporting fresh molten lava to the flowfront. These conduits are, of...

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Volcano Watch — Volcanic gases provide clues to how volcanoes work

Volcano Watch — Volcanic gases provide clues to how volcanoes work

In a double handful of molten magma (weighing about a pound), there is less than a tenth of an ounce, by weight, of dissolved gas—roughly the same...

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Volcano Watch — Growth of Lō‘ihi Seamount

Volcano Watch — Growth of Lō‘ihi Seamount

Floating hydrophones and sonobuoys recorded the crackling and grinding noises that are often indicative of an ongoing submarine eruption, but the...

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Volcano Watch — Submersible studies of Lo`ihi Seamount

Volcano Watch — Submersible studies of Lo`ihi Seamount

In response to the intense off-shore earthquake swarm that began on July 16, scientists at the University of Hawaii (UH) received funding for a...

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Volcano Watch — A massive earthquake swarm at Lo`ihi Seamount

Volcano Watch — A massive earthquake swarm at Lo`ihi Seamount

It was only 42 years ago that Lo`ihi and four other seamounts were discovered during a bathymetric survey of the area south and southeast of the Big...

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Volcano Watch — Measuring the mountains: Ground deformation of Hawaii's volcanoes

Volcano Watch — Measuring the mountains: Ground deformation of Hawaii's volcanoes

The ground's surface around the active Hawaiian volcanoes Kīlauea and Mauna Loa is constantly changing. Lava flows laminate their sides during active...

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Volcano Watch — Steaming vents at Kīlauea: Stay on the trails!

Volcano Watch — Steaming vents at Kīlauea: Stay on the trails!

On Wednesday, July 17, a 10-year-old boy slipped into a large crack in the Sulphur Banks - Steaming Flats area of Hawaii Volcanoes National Park...

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Volcano Watch — Kīlauea eruption status: the lava keeps on flowing

Volcano Watch — Kīlauea eruption status: the lava keeps on flowing

The 13-year-old eruption along Kīlauea's East Rift Zone has continued unabated since the pause from May 30 to June 4. Over a period of 18 hours on May...

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Volcano Watch — Lava still flowing and isle keeps growing...

Volcano Watch — Lava still flowing and isle keeps growing...

The long-standing eruption of Kīlauea Volcano continues unabated this week as lava tubes spill 14 million cubic feet of lava per day into the ocean at...

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Volcano Watch — Deep earthquakes

Volcano Watch — Deep earthquakes

Each year, the Hawaiian Volcano Observatory records thousands of earthquakes with its island-wide network of seismographs. Often, many of these...

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Volcano Watch — Lava breakouts reach the sea

Volcano Watch — Lava breakouts reach the sea

The eruption along Kīlauea's East Rift Zone continues after a pause from May 30 to June 4. Over a period of 18 hours on May 29-30, lava gradually...

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