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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 — Mauna Loa events in 1903 - separating the wheat from the chaff

Volcano Watch — Mauna Loa events in 1903 - separating the wheat from the chaff

As we await the next eruption of Mauna Loa, some HVO scientists have been looking at old eruption records which enable us to see trends that could...

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Volcano Watch — Who da guy behind the HVO daily web updates?

Volcano Watch — Who da guy behind the HVO daily web updates?

The Hawaiʻian Volcano Observatory website (hvo.wr.usgs.gov) gets over half-a-million visitors a month. Most of those hits are folks checking out the...

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Volcano Watch — Mount St. Helens is alma mater to many at HVO

Volcano Watch — Mount St. Helens is alma mater to many at HVO

In the last few days, two scientists stationed at the Hawaiʻian Volcano Observatory (HVO) have packed their bags and headed for Mount St. Helens...

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Volcano Watch — Mount St. Helens back in the news

Volcano Watch — Mount St. Helens back in the news

As most readers probably know, Mount St. Helens has reawakened after 18 years of repose. Here are some of the many questions HVO has received in the...

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Volcano Watch — Jim Kauahikaua new Scientist-in-Charge of HVO

Volcano Watch — Jim Kauahikaua new Scientist-in-Charge of HVO

Jim Kauahikaua has been named the new Scientist-in-Charge (SIC) of the Hawaiʻian Volcano Observatory, starting October 3. Jim is currently a...

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Volcano Watch — Kīlauea diary

Volcano Watch — Kīlauea diary

Mauna Loa's recent indigestion has attracted a lot of attention, stealing the limelight from Kīlauea, which has been in nearly continuous eruption for...

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Volcano Watch — Towering celebrity volcano still waiting to take the stage

Volcano Watch — Towering celebrity volcano still waiting to take the stage

The sight of stately Mauna Loa rising over 3,960 m (13,000 feet) above sea level is a familiar and welcome view to Hawai`i Island residents and...

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Volcano Watch — Mauna Loa stirring

Volcano Watch — Mauna Loa stirring

We have a number of ways to monitor a volcano, each tuned to different sets of measurements or observations and telling us different things that we...

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Volcano Watch — Obsidian, a scarce commodity in Hawaiʻi

Volcano Watch — Obsidian, a scarce commodity in Hawaiʻi

People sometimes ask if there's any obsidian in Hawaiʻi. The short answer is yes, but if you want to see an obsidian flow, you'll have to go to the...

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Volcano Watch — Volcano unrest spurs increased monitoring in Alaska and HAWII

Volcano Watch — Volcano unrest spurs increased monitoring in Alaska and HAWII

As we work to increase monitoring capabilities on our restless neighbor Mauna Loa Volcano, our colleagues at the Alaska Volcano Observatory (AVO) are...

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Volcano Watch — When Hualālai Turned Viscous

Volcano Watch — When Hualālai Turned Viscous

As you make the drive from Waimea to Kona, you may notice a peculiar grassy knoll and an associated hummocky ridge on the northern slope of Hualālai...

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Volcano Watch — Lava and seawater interactions: a hotbed of diverse research

Volcano Watch — Lava and seawater interactions: a hotbed of diverse research

If you walk along the coast to where the Banana flow has been entering the sea, you will see a steam plume rising from the surface of the water. The...

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