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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 — A sight to see: maintaining HVO’s webcams during a historic eruption

Volcano Watch — A sight to see: maintaining HVO’s webcams during a historic eruption

Visual observations have been a backbone in studies of volcanoes, from 2,000 years ago to now. They remain fundamental to understanding how volcanoes...

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Volcano Watch — Handling the pressure: what gases trapped inside crystals tell us

Volcano Watch — Handling the pressure: what gases trapped inside crystals tell us

USGS Hawaiian Volcano Observatory scientists use tiny features within crystals in erupted lava to answer big questions about the underlying plumbing...

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Volcano Watch — New Hawaii citizen science tool: Is Tephra Falling?

Volcano Watch — New Hawaii citizen science tool: Is Tephra Falling?

During Kīlauea summit lava fountaining episode 41, residents and visitors shared their observations of tephra falling via email, phone calls, and on...

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Volcano Watch — When it rained rocks: tephra fall during Kīlauea’s episode 41

Volcano Watch — When it rained rocks: tephra fall during Kīlauea’s episode 41

Large lava fountains streamed from both the north and south vents reaching heights of at least 1475 feet (450 meters) during episode 41 of Kīlauea’s...

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Volcano Watch — What do small earthquakes beneath Kīlauea summit mean for the ongoing eruption?

Volcano Watch — What do small earthquakes beneath Kīlauea summit mean for the ongoing eruption?

“Volcano Watch” articles over the past two weeks have described past episodic lava fountaining eruptions at Kīlauea Iki (1959) and Maunaulu (1969)...

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Volcano Watch — The 1969 Maunaulu eruption: 12 lava fountaining episodes

Volcano Watch — The 1969 Maunaulu eruption: 12 lava fountaining episodes

Last week’s “Volcano Watch” article reviewed the lava fountaining eruption of Kīlauea Iki in 1959. This week, we’ll continue looking back in time at...

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Volcano Watch — A look back on the episodic Kīlauea Iki eruption in 1959

Volcano Watch — A look back on the episodic Kīlauea Iki eruption in 1959

A series of lava fountains building a cone perched on the crater rim...sounds like the ongoing eruption in Halemaʻumaʻu at the summit of Kīlauea, but...

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Volcano Watch — Hau’oli Makahiki Hou: a round-up of fireworks from Kīlauea’s fountains

Volcano Watch — Hau’oli Makahiki Hou: a round-up of fireworks from Kīlauea’s fountains

Kīlauea has been providing “fireworks” all year long on the Island of Hawaiʻi, and today we present a summary in commemoration of the New Year. 

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Volcano Watch — “It’s a twister!” Or is it? Unraveling Kīlauea’s Volcanic Whirlwinds

Volcano Watch — “It’s a twister!” Or is it? Unraveling Kīlauea’s Volcanic Whirlwinds

Despite the popularity of "Wicked" lately, we’re not talking about that particular twister. We’re talking about the tornado- or whirlwind-like...

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Volcano Watch — One year of Kīlauea’s episodic summit fountaining: highlighting the hazards

Volcano Watch — One year of Kīlauea’s episodic summit fountaining: highlighting the hazards

On December 23, 2024, a unique eruption began in Kīlauea’s Halemaʻumaʻu crater, with a style of activity not seen for nearly 40 years. The eruption...

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Volcano Watch — (Lava) fountains of knowledge: announcing January 2026 Volcano Awareness Month events on the Island of Hawaiʻi

Volcano Watch — (Lava) fountains of knowledge: announcing January 2026 Volcano Awareness Month events on the Island of Hawaiʻi

As the year 2025 comes to a close, we reflect on the historic past year of volcanic activity on the Island of Hawaiʻi. Thirty-eight episodes of lava...

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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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