USA NPN National Phenology Network

Taking the Pulse of Our Planet

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Did the groundhog get it right this year?

Punxsutawney Phil predicts an early spring this year. Our map of accumulated growing degree days shows he may be right, for parts of the country anyway. See what Nature's Notebook observers are already reporting on plants and animals across the country.

2019 heat accumulation vs groundhog prognostication

Date: 
02/02/2019