News

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

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

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...

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

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...

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

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 --...

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...

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...

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