NOAA's already done it. https://www.noaa.gov/stories/everyones-favorite-groundhog-predicts-6-more-weeks-of-winter https://www.noaa.gov/stories/everyones-favori

NOAA's already done it. https://www.noaa.gov/stories/everyones-favorite-groundhog-predicts-6-more-weeks-of-winter https://www.noaa.gov/stories/everyones-favorite-groundhog-pr... 40% accurate, so you're better off inverting Phil's prediction, but not by much.