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Yellowstone's Norris Uplift Returns, Eruption Unlikely, Say Scientists

1/30/2026

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Summary

Story summary

The Norris Uplift Anomaly, a 19-mile-wide bulge in the Yellowstone caldera, reappeared in July 2025 after being first noted in 1996.
Scientists, including Michael Poland of the Yellowstone Volcano Observatory, say the uplift does not signal an imminent eruption.
The U.S. Geological Survey notes that Yellowstone is not overdue for a supereruption, and most supervolcanoes do not erupt multiple times at that scale.

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Story summary

The Norris Uplift Anomaly, a 19-mile-wide bulge in the Yellowstone caldera, reappeared in July 2025 after being first noted in 1996.
Scientists, including Michael Poland of the Yellowstone Volcano Observatory, say the uplift does not signal an imminent eruption.
The U.S. Geological Survey notes that Yellowstone is not overdue for a supereruption, and most supervolcanoes do not erupt multiple times at that scale.