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Today in History: Yellowstone fires devastate over 150,000 acres

8/20/2025

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Summary

Story summary

On August 20, 1988, Yellowstone National Park experienced its most devastating day of wildfires, with flames consuming over 150,000 acres. The fires, fueled by drought and strong winds, merged into large blazes, prompting the park's closure to non-emergency personnel for the first time. The inferno ultimately burned 36% of the park before cooler weather ended it.

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Story summary

On August 20, 1988, Yellowstone National Park experienced its most devastating day of wildfires, with flames consuming over 150,000 acres. The fires, fueled by drought and strong winds, merged into large blazes, prompting the park's closure to non-emergency personnel for the first time. The inferno ultimately burned 36% of the park before cooler weather ended it.