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The 2024 YVO annual report has just exploded from the presses!

The 2024 YVO annual report has just exploded from the presses!

In 2024, Yellowstone experienced a year of contrasts.  Hydrothermal explosions dominated the headlines, but in terms of seismicity and ground...

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Photo & Video Chronology — April 9, 2026 — Kīlauea summit episode 44

Photo & Video Chronology — April 9, 2026 — Kīlauea summit episode 44

Episode 44 of lava fountaining at the summit of Kīlauea took place on April 9, 2026. Southerly/southwesterly winds resulted in the plume being...

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Volcano Watch — Caldera clues: tephra deposits from Kīlauea’s past

Volcano Watch — Caldera clues: tephra deposits from Kīlauea’s past

Past “Volcano Watch” articles have summarized the episodic lava fountaining eruptions in Kīlauea’s recent history—within the past couple hundred years...

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New open access articles on Mauna Loa 2022 eruption

New open access articles on Mauna Loa 2022 eruption

Recent publications in a special Bulletin of Volcanology volume, titled, "Mauna Loa 2022 – Unrest, Eruption, and Outreach at the World’s Largest...

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The path of least resistance: Investigating hot spring plumbing systems in Yellowstone using electrical measurements

The path of least resistance: Investigating hot spring plumbing systems in Yellowstone using electrical measurements

Have you ever wondered what it looks like underneath a Yellowstone hot spring? Clues about those hot water plumbing systems can be learned by using...

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Volcanism on the other side of the world from the Yellowstone Caldera

Volcanism on the other side of the world from the Yellowstone Caldera

The location on the other side of the world from the Yellowstone Caldera is in the southern Indian Ocean—a site near the Kerguelen Plateau, which...

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Mapping snow- and ice-free zones to monitor thermal activity in Yellowstone using high-resolution commercial satellite imagery

Mapping snow- and ice-free zones to monitor thermal activity in Yellowstone using high-resolution commercial satellite imagery

Yellowstone’s thermal areas can have subtle regions of heated ground. High-resolution commercial satellite images provide a new way of accurately...

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Volcano Watch — Pele, Lono, and Hiʻiaka remind us of Nature’s power

Volcano Watch — Pele, Lono, and Hiʻiaka remind us of Nature’s power

The summit region of Kīlauea experienced tephra fallout and a Kona low storm this past week. Cleanup, recovery, and regrowth is ongoing. These...

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Hot Spring Cleaning!

Hot Spring Cleaning!

You may have heard that throwing rocks, sticks, or other items in hot springs in Yellowstone is a bad idea (and also illegal), but have you ever...

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Volcano Watch — Episode 43, new fountain height record and tephra fallout on communities

Volcano Watch — Episode 43, new fountain height record and tephra fallout on communities

Episode 43 at the summit of Kīlauea began at 9:17 a.m. HST on March 10, 2026, and continued for 9 hours. Both the north and south vents erupted lava...

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Mushroom Pool: The subtle spring with the spectacular story

Mushroom Pool: The subtle spring with the spectacular story

Mushroom Pool is nondescript in appearance, but its impacts on microbiology and on how research is done in Yellowstone National Park have been...

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USGS to Launch Updated Aviation-Focused Volcano Notices in March 2026

USGS to Launch Updated Aviation-Focused Volcano Notices in March 2026

Beginning in early March 2026, the U.S. Geological Survey will introduce updated Volcano Observatory Notices to Aviation (VONAs) that follow new...

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