Punxsutawney Phil, a groundhog in Pennsylvania, is set to make his annual weather forecast on Groundhog Day (February 2nd) to predict if winter will last six more weeks or if spring will come early. Unseasonably warm weather is expected for the forecast, which could influence Phil's prediction. Organizers expect 15,000 to 18,000 people to attend the event at Gobbler's Knob to witness Phil's prediction shortly before 7:30am. The celebration is rooted in a German folk tradition that says if a hibernating animal sees its shadow on Candlemas, winter will last six more weeks.