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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 — Lava rocks come in many colors

Volcano Watch — Lava rocks come in many colors

Driving along the Queen Ka`ahumanu highway from Kailua-Kona to Waikoloa, one passes a vast expanse of well-exposed lava rock. These flows are from...

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Volcano Watch — Cracks in road at Haleakalā's summit—volcanic or benign?

Volcano Watch — Cracks in road at Haleakalā's summit—volcanic or benign?

Sweeping vistas into Haleakalā Crater are seen in the final stretch of road at Haleakalā National Park, from the summit visitor center to the top of...

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Volcano Watch — More than 19,000 earthquakes catalogued in Hawai`i since 1823

Volcano Watch — More than 19,000 earthquakes catalogued in Hawai`i since 1823

Earthquakes occur every day on the Island of Hawai`i. Most are small, less than magnitude 3, but typically a couple are felt by someone each week...

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Volcano Watch — Hawaiian lava flows help in the study of 3-billion-year-old lava flows

Volcano Watch — Hawaiian lava flows help in the study of 3-billion-year-old lava flows

Lava flows and volcanic eruptions played a major role in the Earth's history since it was formed some four billion years ago. We can look at rocks...

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Volcano Watch — Does Your Cat Eat Birds?

Volcano Watch — Does Your Cat Eat Birds?

Cats have been our pets and rat-catchers since the dawn of civilization. Many of us grew up with cats or now keep them (including the authors of this...

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Volcano Watch — Lava Viewing 101

Volcano Watch — Lava Viewing 101

Those of you who pay attention to the goings-on of the volcano are well aware that the quality of lava viewing is highly uneven. Some days you can...

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Photo and Video Chronology - Kīlauea - September 10, 2000

Photo and Video Chronology - Kīlauea - September 10, 2000

Sluggish lava flow - Pūlama pali

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Volcano Watch — Large rocks in strange places

Volcano Watch — Large rocks in strange places

Sometimes in science you find something that theory says you shouldn't. Then your pulse starts racing. Are your observations or calculations wrong? Is...

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Volcano Watch — Waiting for the pause that refreshes

Volcano Watch — Waiting for the pause that refreshes

What do Kīlauea Volcano's eruption and Hilo's 7:30 a.m. traffic have in common? For one thing, lots of stops and starts. The stops and starts in the...

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Volcano Watch — Kīlauea's Eruption Changes; Ocean Entry Stops

Volcano Watch — Kīlauea's Eruption Changes; Ocean Entry Stops

The past two weeks have seen changes in Kīlauea's eruption. The changes aren't fundamental, but they do impact the viewing public. The ocean entry has...

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Volcano Watch — Staff Changes at the Hawaiian Volcano Observatory

Volcano Watch — Staff Changes at the Hawaiian Volcano Observatory

Late last week geophysicist Michael Lisowski and his family left Hilo for Vancouver, Washington, and the Cascades Volcano Observatory. 

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Volcano Watch — Volcano Watch approaches its ninth year

Volcano Watch — Volcano Watch approaches its ninth year

The weekly newspaper series "Volcano Watch" has been published continuously since November 1991. Its articles keep Big Island residents informed about...

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