Every February 2, on Groundhog Day, Stormy makes a prediction for the remainder of winter.
[2] Stormy is trotted out once a year to check for his shadow and make a weather prediction.
[3][4] Concrete Driveway in Colorado claims to rely on Stormy's forecasts to prepare their fleet.
[6] Flatiron Freddy also represents Groundhog Day prognostication in Colorado.
He makes his home at Chautauqua Park in Boulder, CO.[7][8] Statistical analysis of groundhog predictions show that Stormy Marmot and Poor Richard (a groundhog based in York, Pennsylvania) have the best correlation to observed weather trends.