The End of Humanity? What Would Happen if the Yellowstone Supervolcano Erupted Now
Scientists say a supereruption could send ash across North America and trigger years of cooling, with up to 1,000 immediate deaths.
- Following sharp seismic spikes detected overnight, the Yellowstone Volcano Observatory raised the alert to advisory after models indicated an 85-92% probability of a cataclysmic eruption within three weeks.
- Gas-Rich magma reaching 650-800°C breached the surface, creating an eruption column rising 30-50 kilometers and generating pyroclastic density currents that surged tens of kilometers outward.
- Heavy ashfall across at least eight states collapsed roofs and disrupted power grids, while Billings, Montana, disappeared beneath nearly a meter of debris as ash short-circuited electrical infrastructure.
- Sulphate aerosols injected into the stratosphere reflect sunlight, likely triggering a volcanic cooling episode; a decade later, the world's population may decline to 7.9 billion with increased silicosis and cardiovascular disease diagnoses.
- Ten years after the eruption, global recovery efforts focus on rebuilding infrastructure and food production, with communities shifting towards vertical farming and local greenhouses to address persistent agricultural shortages.
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12 Articles
The end of humanity? What would happen if the Yellowstone supervolcano erupted now
A Yellowstone super-eruption would begin not with a sudden surprise, but with weeks of increasingly alarming warning signs such as migrating earthquake swarms, rapid ground uplift, changing geysers, and rising volcanic gases. In a worst-case scenario, those signals could culminate in a VEI 8 eruption that blasts ash tens of kilometers into the atmosphere, unleashes deadly pyroclastic flows, buries parts of the western United States in ash, and c…
The model poses an extreme overrun of Yellowstone and its possible effects in North America.
The Conversation
Phil's Stock WorldEnd of humanity? Blow-by-blow account of what would happen if the Yellowstone supervolcano erupted now
Around 631,000 years ago — a geological blink of an eye — catastrophe unfolded in what is now north-western Wyoming, US. During what is thought to have been a series of immense volcanic eruptions, life within hundreds of kilometres of the blasts was shattered. Ash was dispersed across much of North America and the effects were felt worldwide. This was a super-eruption of the massive volcanic system located in what is now the Yellowstone National…
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