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Yellowstone supervolcano eruption simulations

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2026-09-26 04:07 UTC → 2026-09-27 12:21 UTC · added ~~removed~~

Scientific simulations and research models have detailed the catastrophic potential of a hypothetical super-eruption at the Yellowstone supervolcano. Researchers emphasize that these models are mathematical thought experiments and that the probability of an imminent eruption remains ~~low.~~ low, noting that the caldera is not considered overdue for an eruption. Simulations describe a sequence of events beginning with warning signs such as unusual earthquake swarms, ground deformation, and changes in geyser or gas activity. A major eruption could involve the crust breaking due to magma pressure, creating an explosive column of ash and magma that might plunge the central United States into darkness. This could be followed by lethal pyroclastic flows covering a radius of over 100 kilometers. Further modeling outlines a potential two-month escalation timeline that could necessitate a 62-mile evacuation zone for approximately 200,000 residents. The consequences of a full-scale event include widespread ashfall capable of burying cities, disrupting power and water supplies, and causing significant global climate shifts, including a potential drop in global average temperatures by approximately 32 degrees Fahrenheit. Recent modeling suggests these long-term global consequences could include potential famine, which researchers estimate could lead to up to 1.3 billion premature deaths worldwide.

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