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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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USGS HVO Press Release — Magnitude-4.0 Earthquake off the Northeast Coast of Hawai‘i Island

USGS HVO Press Release — Magnitude-4.0 Earthquake off the Northeast Coast of Hawai‘i Island

A magnitude-4.0 earthquake was located off the northeast coast of Hawai‘i Island by the U.S. Geological Survey's Hawaiian Volcano Observatory on...

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Volcano Watch — Why all the fuss about Mauna Loa this month?

Volcano Watch — Why all the fuss about Mauna Loa this month?

As noted in Volcano Watch a few weeks ago, this month marks the 25th anniversary of Mauna Loa's most recent eruption—a 22-day event that began on...

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Volcano Watch — Size Matters When It Comes to Volcanic Islands

Volcano Watch — Size Matters When It Comes to Volcanic Islands

The Island of Hawai`i, a composite of five volcanoes, has a surface area almost twice as large as the other main Hawaiian Islands combined.

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Volcano Watch — Good Vibrations—the Earth's Music

Volcano Watch — Good Vibrations—the Earth's Music

When an earthquake occurs, why do we feel the ground shake? The shaking we feel is from seismic waves radiating away from the earthquake. These waves...

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Volcano Watch — Nobody's Talking About the 800-pound Gorilla of Hawaiian Volcanoes

Volcano Watch — Nobody's Talking About the 800-pound Gorilla of Hawaiian Volcanoes

March 25 marks the 25th anniversary of the most recent eruption of Mauna Loa volcano.

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Volcano Watch — Quiescence in 1913 is Similar to 2008 Events

Volcano Watch — Quiescence in 1913 is Similar to 2008 Events

In most sciences, processes are investigated by identifying the factors that affect them and varying each factor, in turn, to determine its...

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Volcano Watch — Seasonally Enhanced Aroma Briefly Fills the Air Near Halema`uma`u

Volcano Watch — Seasonally Enhanced Aroma Briefly Fills the Air Near Halema`uma`u

It seems that something new and different is always cooking at Kīlauea.

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Volcano Watch — There Were Technological Leaps in Volcano Watching, Even 75 Years Ago

Volcano Watch — There Were Technological Leaps in Volcano Watching, Even 75 Years Ago

By the time Babe Ruth had played baseball with the Waiakea Pirates and planted a banyan tree in Hilo in late October, 1933, enough strong earthquakes...

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Volcano Watch — Volcanic and Manmade Pollution Cause Similar Effects

Volcano Watch — Volcanic and Manmade Pollution Cause Similar Effects

What's white and wet and green all over? Hint: this is a household problem that Big Island residents on rainwater catchment share with the citizens of...

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Volcano Watch — Where did the rest of the rocks go? More Went Down Than Up

Volcano Watch — Where did the rest of the rocks go? More Went Down Than Up

Now that the 2008 Halema`uma`u eruption has ended (or is in repose), the total volume of solid material (tephra) thrown out from the new vent can be...

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USGS HVO Press Release — Is Halema‘uma‘u Pau?

USGS HVO Press Release — Is Halema‘uma‘u Pau?

Is Kīlauea's summit eruption pau—coming to an end—as the New Year begins? This question is currently under discussion at the U.S. Geological Survey...

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Volcano Watch — World's Active Volcanoes Keep Scientists Busy in 2008

Volcano Watch — World's Active Volcanoes Keep Scientists Busy in 2008

As we begin the New Year with Kīlauea Volcano erupting at two vents simultaneously and still going strong after its 26th anniversary on January 3, a...

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