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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 — 25 years later, what have we learned from Mount St. Helens?

Volcano Watch — 25 years later, what have we learned from Mount St. Helens?

This week marks the 25th anniversary of the May 18, 1980, eruption of Mount St. Helens. At 8:32 a.m. that Sunday morning, a magnitude-5.1 earthquake...

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Volcano Watch — New assessment of U.S. volcano threats points to needed monitoring improvements

Volcano Watch — New assessment of U.S. volcano threats points to needed monitoring improvements

News stories have appeared widely in the past week spotlighting the "most dangerous" volcanoes in the United States, including a few in our backyard.

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Volcano Watch — Supersized eruptions are all the rage!

Volcano Watch — Supersized eruptions are all the rage!

Last week, several HVO scientists were accompanied to Pu`u `O`o by a film crew producing a NOVA program for PBS. The producer was interested in the...

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Volcano Watch — Radar Specialist joins Hawaiʻian Volcano Observatory Staff

Volcano Watch — Radar Specialist joins Hawaiʻian Volcano Observatory Staff

We welcome to our staff at the U.S. Geological Survey's Hawaiʻian Volcano Observatory our newest volcano watcher, Dr. Michael Poland.

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Volcano Watch — You can see history in the landscape of Kaua`i?

Volcano Watch — You can see history in the landscape of Kaua`i?

Kaua`i's spectacular scenery makes it a top destination for tourists from all over the world. It has been the backdrop of choice for many popular...

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Volcano Watch — Native `ohi`a lehua tree closes its pores to volcanic pollution

Volcano Watch — Native `ohi`a lehua tree closes its pores to volcanic pollution

The past week marked the celebration of the 42nd annual Merrie Monarch Festival on the island of Hawai`i. Throughout the seven-day cultural event...

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Volcano Watch — Mauna Loa signals a change as Spring arrives

Volcano Watch — Mauna Loa signals a change as Spring arrives

Each week since October 2002, seismologists at the U.S. Geological Survey's Hawaiʻian Volcano Observatory (HVO) have provided brief synopses of the...

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Volcano Watch — Scientists can now detect changes in a volcano's shape from space

Volcano Watch — Scientists can now detect changes in a volcano's shape from space

Volcano monitoring utilizes a wide range of methods, including the composition and emission rate of gases, earthquake activity, and ground deformation...

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Volcano Watch — How long will the current eruption last?

Volcano Watch — How long will the current eruption last?

The current eruption at Kīlauea is 22 years old and counting. Residents in the down-wind direction have probably become tired of the vog and would...

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Volcano Watch — Busy Pu`u `O`o produces more spatter, lava flows, and gas

Volcano Watch — Busy Pu`u `O`o produces more spatter, lava flows, and gas

The wise old saying that a photograph is worth a thousand words certainly applies to one of the longest-running volcanic shows on Earth, the eruption...

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Volcano Watch — Aloha e na makani `olu`olu; we welcome the return of the tradewinds

Volcano Watch — Aloha e na makani `olu`olu; we welcome the return of the tradewinds

Residents of east Hawai`i are finally getting some relief from nearly two months of intermittently poor air quality caused by sulfur dioxide (SO2) gas...

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Volcano Watch — Amazing changes at Mount St. Helens

Volcano Watch — Amazing changes at Mount St. Helens

If you've been reading Volcano Watch or following the news from Washington State, you know that Mount St. Helens began erupting in early October 2004...

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