About this recording
Published 2026-05-24. Yellowstone is normal right now… but one pool just had its biggest recorded eruption. Black Diamond Pool in Biscuit Basin erupted on April twenty-eighth and again on April twenty-ninth. The April twenty-ninth event was the largest recorded there since monitoring instruments were installed in summer twenty twenty-five. This was not a supervolcano eruption. Yellowstone remains Normal / Green. This archived recording reflects reporting at publication; conditions may have changed.
An archive briefing, not a real-time warning. Follow current instructions from local authorities.
Understand the reports
Use these explainers to interpret the measurements and warnings discussed in disaster coverage. They provide background, not updates to this archived briefing.
