News

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)...

When trying to understand the behavior of a volcanic system like Yellowstone and the likelihood it will have another eruption, it is important to...

Kīlauea summit eruption episode 40 lava fountaining lasted for just under 10 hours on January 12, with maximum lava fountain heights of about 800 feet...

In July 2025, an area on the north rim of Yellowstone caldera began to uplift slightly. This area also experienced uplift during 1996–2004.

With 2026 having arrived, Caldera Chronicles looks back on the past year of geological stories in Yellowstone National Park