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Volcano Watch — Tracking the growth of a new puʻu at Kīlauea

Volcano Watch — Tracking the growth of a new puʻu at Kīlauea

Tephra formed by lava fountains during the ongoing Kīlauea summit eruption has created a new puʻu (hill) southwest of Halemaʻumaʻu crater. The new...

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Photo & Video Chronology — December 2, 2025 — Kīlauea summit overflight

Photo & Video Chronology — December 2, 2025 — Kīlauea summit overflight

The USGS Hawaiian Volcano Observatory conducted a monitoring overflight of Kīlauea summit on December 2, 2025.

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Volcano Watch — The legacy of the 1975 earthquake: 50 years of study at Kīlauea’s south flank

Volcano Watch — The legacy of the 1975 earthquake: 50 years of study at Kīlauea’s south flank

The 1975 Kalapana earthquake brought big changes to lives of the people affected by the fatalities and damage, as well as big changes to our...

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Volcano Watch — Remembering the destructive Kalapana earthquake 50 years ago

Volcano Watch — Remembering the destructive Kalapana earthquake 50 years ago

Fifty years ago this month, the largest Hawaii earthquake of the 20th and 21st centuries occurred. Earthquake shaking, as well as ground subsidence...

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Volcano Watch — Distant versus local earthquakes and tsunami response times in Hawaii

Volcano Watch — Distant versus local earthquakes and tsunami response times in Hawaii

Earthquakes and tsunamis in the news over the past few days are a reminder that we live on a dynamic planet with different hazards and associated...

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Monitoring stations detect small magnitude earthquakes at Mount Rainier during July and August 2025

Monitoring stations detect small magnitude earthquakes at Mount Rainier during July and August 2025

An earthquake swarm that started at Mount Rainier on July 8, 2025, is the largest ever recorded at the volcano.

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In Memoriam: Wes Hildreth, 1938-2025

In Memoriam: Wes Hildreth, 1938-2025

The USGS California Volcano Observatory is saddened to announce the death of Edward Wesley (Wes) Hildreth III, in a vehicle accident on June 19, 2025...

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Volcano Watch — What Fans the Flames Observed at Volcanic Vents?

Volcano Watch — What Fans the Flames Observed at Volcanic Vents?

Recently, something has been observed “dancing” above the active eruptive vents inside Halemaʻumaʻu…Hydrogen flames! Let’s take a look into what...

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Volcano Watch — Inter-Episode Rumblings at Kīlauea

Volcano Watch — Inter-Episode Rumblings at Kīlauea

Witnessing a volcanic eruption is, for many, a once-in-a-lifetime experience. Hawaiʻi Volcanoes National Park welcomes well over a million visitors...

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New V3cam provides another livestream view of Halemaʻumaʻu

New V3cam provides another livestream view of Halemaʻumaʻu

With permission from Hawaiʻi Volcanoes National Park, the USGS Hawaiian Volcano Observatory has installed another livestream camera on the rim of...

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Volcano Watch — What lurks beneath: learning from lava ooze outs

Volcano Watch — What lurks beneath: learning from lava ooze outs

Halemaʻumaʻu has been progressively filled by six eruptions at the summit of Kīlauea since 2020, and it continues to accumulate new lava with each...

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Volcano Watch — Twenty episodes and counting: lava fountains continue in Halemaʻumaʻu

Volcano Watch — Twenty episodes and counting: lava fountains continue in Halemaʻumaʻu

On December 23, 2024, eruptive activity at Kīlauea’s summit began again with the first in what has become 20 discrete lava fountaining episodes. Many...

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