Watch the Unusually Early Advance of Spring 2017 in the USA

The USA-NPN is tracking the unusually early start of spring 2017 across the USA. Map from 2-22-2017

Detailed Description

A new set of scientifically backed maps produced by the USGS-led USA-National Phenology Network shows just how unusually early spring is arriving in the United States. 


Image Dimensions: 828 x 552

Date Taken: