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Getting sphere-ious about spherulites

Getting sphere-ious about spherulites

If you ever have the chance to visit the silica-rich Hot Creek rhyolite lava flow in the Long Valley Caldera, you might get the sense that you're...

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Photo and Video Chronology – New eruption at Kīlauea summit continues – September 11, 2023

Photo and Video Chronology – New eruption at Kīlauea summit continues – September 11, 2023

The Kīlauea summit eruption that began yesterday at 3:15 p.m., September 10th, continues this morning. Eruptive activity is confined to the...

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Photo and Video Chronology – New eruption at Kīlauea summit – September 10, 2023

Photo and Video Chronology – New eruption at Kīlauea summit – September 10, 2023

Kīlauea volcano is erupting. At approximately 3:15 p.m. HST on September 10, 2023, the USGS Hawaiian Volcano Observatory observed eruptive activity in...

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Kīlauea Volcano Activity Notice — status upgrade to RED/WARNING, eruption at the summit

Kīlauea Volcano Activity Notice — status upgrade to RED/WARNING, eruption at the summit

Kīlauea volcano is erupting. At approximately 3:15 p.m. HST on September 10, 2023, the USGS Hawaiian Volcano Observatory observed eruptive activity in...

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Volcano Watch — Tilt measurements still vital to volcano monitoring after more than a century

Volcano Watch — Tilt measurements still vital to volcano monitoring after more than a century

Measuring how a volcano deforms in response to moving magma is one of the cornerstones of volcano monitoring. Our instrumentation includes a number of...

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USGS volcano scientists visit Long Valley

USGS volcano scientists visit Long Valley

If you were visiting Long Valley this past week, you might have seen a cavalcade of SUVs periodically disgorging people wielding rock hammers, hand...

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Photo and Video Chronology – HVO deploys new webcam and monitoring equipment at Kīlauea summit – August 25, 2023

Photo and Video Chronology – HVO deploys new webcam and monitoring equipment at Kīlauea summit – August 25, 2023

On August 25, 2023, HVO staff deployed a new webcam and survey equipment in Kīlauea's summit region. Kīlauea volcano is not erupting but earthquakes...

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Volcano Watch — Using remote acoustic monitoring to distinguish volcanic styles

Volcano Watch — Using remote acoustic monitoring to distinguish volcanic styles

Volcanic eruptive activity may take many forms, from gently erupting basaltic fissures in Hawaii to intense explosive eruptions like those of Mount St...

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Volcano Watch — Aloha to the University of Hawai‘i’s Newest Geology Professor

Volcano Watch — Aloha to the University of Hawai‘i’s Newest Geology Professor

Dr. Lis Gallant has spent the last two and a half years at the USGS Hawaiian Volcano Observatory (HVO) as a National Science Foundation Postdoctoral...

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Volcano Watch — The most unusual Kīlauea eruption…maybe 1823?

Volcano Watch — The most unusual Kīlauea eruption…maybe 1823?

Last month a "Volcano Watch" article discussed the bicentennial of the first visit of westerners to Kīlauea caldera, led by English missionary William...

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Volcano Watch — Searching for tephra from one of Kīlauea’s largest explosive eruptions

Volcano Watch — Searching for tephra from one of Kīlauea’s largest explosive eruptions

Understanding the eruptive history of volcanoes in Hawaii requires a tremendous amount of time and effort examining deposits. Typically, older...

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Volcano Watch — USGS Hawaiian Volcano Observatory staff return to American Samoa

Volcano Watch — USGS Hawaiian Volcano Observatory staff return to American Samoa

It's been one year since Taʻū volcano in American Samoa started shaking residents of the Manuʻa Islands (Ofu-Olosega and Ta‘ū Islands). Fortunately...

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