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Colorado’s recent massive flooding, which has left hundreds of people unaccounted for, has been called an anomalous 100- or even 1,000-year event by the scientific community. Such floods have a 1 percent and 0.1 percent chance of occurring, respectively, during any given year. While those odds make them rare events, they are the result of natural larger-scale weather and climate patterns, with perhaps an assist from climate change.
