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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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Which is more hazardous to Yellowstone visitors, wildlife or hot springs?

Which is more hazardous to Yellowstone visitors, wildlife or hot springs?

Although it is a common assumption that animals cause numerous wounds and deaths in Yellowstone, hot springs actually account for more injuries and...

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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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A deep dive into surficial geologic mapping

A deep dive into surficial geologic mapping

Geologic maps are a fundamental tool for earth scientists to assemble and communicate geologic information. Under the umbrella of geologic mapping are...

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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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So, where are you from? Tracing thermal waters in the rivers of Yellowstone back to their sources

So, where are you from? Tracing thermal waters in the rivers of Yellowstone back to their sources

Scientists can determine the sources of hydrothermal fluids in park rivers by monitoring water chemistry. The result? A “budget” of which geyser...

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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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The rising waters of Nuphar Lake, near Norris Geyser Basin

The rising waters of Nuphar Lake, near Norris Geyser Basin

A small lake near Norris Geyser Basin has seen some significant changes over the past few years, rising in level and changing color due to inputs of...

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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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New research sheds light on Steamboat Geyser’s eruptions, past and present

New research sheds light on Steamboat Geyser’s eruptions, past and present

What can trees tell us about Steamboat Geyser’s history? Why do Steamboat’s seismic eruption signals vary seasonally? Get up to speed on two newly...

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