Latest News About Yellowstone Caldera

Updated 2026-05-27 17:10

Here’s a concise update on the latest Yellowstone Caldera news based on reputable sources up to May 2026.

Direct answer

Key points from recent official updates

What this means for visitors and nearby residents

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Would you like me to pull the latest USGS links and subscribe you to the Volcano Notification Service, or summarize the recent USGS and Smithsonian assessments in a quick side-by-side table? I can also provide a brief explainer on what “background levels of activity” and “caldera deformation” mean in volcanic monitoring.

Citations

Sources

Yellowstone - Smithsonian Institution | Global Volcanism Program

The Yellowstone Plateau volcanic field developed through three volcanic cycles spanning two million years that included some of the world's largest known eruptions. Eruption of the over 2,450 km3 Huckleberry Ridge Tuff about 2.1 million years ago created the more than 75-km-long Island Park caldera. The second cycle concluded with the eruption of the Mesa Falls Tuff around 1.3 million years ago, forming the 16-km-wide Henrys Fork caldera at the western end of the first caldera. Activity...

volcano.si.edu