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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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Echinus Geyser is back in action! For now…

Echinus Geyser is back in action! For now…

The world’s largest acidic geyser is located in Norris Geyser Basin.  Lately, it’s been putting on quite a show.

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Volcano Watch — Mauna Loa has lessons to teach during quiet times

Volcano Watch — Mauna Loa has lessons to teach during quiet times

The 2022 eruption of Mauna Loa was an extraordinary eruption in a lot of ways. It was the first eruption from this volcano in 38 years and the first...

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Yellowstone’s Wahb Springs and Death Gulch—unusual features with unusual names

Yellowstone’s Wahb Springs and Death Gulch—unusual features with unusual names

In the northeast part of Yellowstone National Park there is a thermal area with a strange composition.  And even stranger names.

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Photo & Video Chronology — February 16, 2026 — Kīlauea episode 42 fountains and fallout

Photo & Video Chronology — February 16, 2026 — Kīlauea episode 42 fountains and fallout

Episode 42 of lava fountaining in Halemaʻumaʻu at the summit of Kīlauea lasted for just under 10 hours on February 15, 2026. Both the north and south...

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A brief history of volcanology: from myths and legends to a modern and interdisciplinary science

A brief history of volcanology: from myths and legends to a modern and interdisciplinary science

Volcanology has evolved over millennia from myths and legends to a modern and interdisciplinary science. Better monitoring networks and improved...

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Be my Valentine (Geyser)

Be my Valentine (Geyser)

In honor of Valentine’s Day, let’s talk about a geyser in Norris Geyser Basin that came back to life in August 2025 after a 20-year hiatus --...

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Yellowstone earthquakes that are related to ground deformation

Yellowstone earthquakes that are related to ground deformation

We know that Yellowstone is an active volcanic system due to the high rate of seismicity and the active ground deformation.  What happens when those...

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The largest thermal area in Yellowstone National Park: Lower Geyser Basin

The largest thermal area in Yellowstone National Park: Lower Geyser Basin

Yellowstone is a land of superlatives. Even in such an environment, the Lower Geyser Basin stands out as one of the most spectacular areas in the park...

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