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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 — The 1855–1856 Mauna Loa lava flow nearly devastated Hilo

Volcano Watch — The 1855–1856 Mauna Loa lava flow nearly devastated Hilo

On the evening of August 11, 1855, Mauna Loa erupted from a location described as 1,000 to 2,000 ft below the summit of the volcano. This was the...

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Volcano Watch — Improving lava-flow risk assessment for populated areas

Volcano Watch — Improving lava-flow risk assessment for populated areas

Hawai‘i County is the fastest-growing region in the State of Hawaii. Its relatively inexpensive real estate, along with population growth, spurs more...

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Volcano Watch — International volcano conference features wet volcanoes workshop

Volcano Watch — International volcano conference features wet volcanoes workshop

The recent anniversary of Kīlauea's May 1924 explosive summit eruptions reminds us of the sometimes violent interactions that occur when relatively...

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Photo and Video Chronology - Kīlauea - May 22, 2014

Photo and Video Chronology - Kīlauea - May 22, 2014

Kahauale‘a 2 flow remains active northeast of Pu‘u ‘Ō‘ō

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Volcano Watch — Can an event like the SR530 landslide near Oso, Washington, happen in Hawai‘i?

Volcano Watch — Can an event like the SR530 landslide near Oso, Washington, happen in Hawai‘i?

Landslides are hazards in areas where slopes are steep. The degree of the hazard depends on the type of rocks that make up the slope. Large landslides...

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Volcano Watch — Kīlauea was jumping and rocks were flying 90 years ago

Volcano Watch — Kīlauea was jumping and rocks were flying 90 years ago

Ninety years ago this month, Kīlauea was exploding.

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Photo and Video Chronology - Kīlauea - May 5, 2014

Photo and Video Chronology - Kīlauea - May 5, 2014

New camera position on Pu‘u ‘Ō‘ō; The active front of the Kahauale‘a 2 flow

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Volcano Watch — A new submarine eruption in the Northern Mariana Islands: could it happen here?

Volcano Watch — A new submarine eruption in the Northern Mariana Islands: could it happen here?

During the past week, we have been keeping a close watch on the Northern Mariana Islands (NMI), as seismometers on the islands record high levels of...

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Photo and Video Chronology - Kīlauea - April 28, 2014

Photo and Video Chronology - Kīlauea - April 28, 2014

Lava overflows Pu‘u ‘Ō‘ō crater, Kahauale‘a 2 flow remains active

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Volcano Watch — Kīlauea Volcano's Kahauale‘a 2 lava flow: Should Puna residents be concerned?

Volcano Watch — Kīlauea Volcano's Kahauale‘a 2 lava flow: Should Puna residents be concerned?

The Kahauale‘a 2 lava flow, fed by a vent on the northeast edge of the Pu‘u ‘Ō‘ō crater, is currently the only active flow along Kīlauea Volcano's...

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Photo and Video Chronology - Kīlauea - April 18, 2014

Photo and Video Chronology - Kīlauea - April 18, 2014

Kahauale‘a 2 flow moving slowly through remote forest, spattering at Pu‘u ‘Ō‘ō

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Volcano Watch — Portable instrument platforms enable rapid deployment of monitoring stations

Volcano Watch — Portable instrument platforms enable rapid deployment of monitoring stations

When Mount St. Helens reawakened in late September 2004 with an intense swarm of earthquakes and very noticeable uplift of the volcano's crater floor...

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