You are here
USA National Phenology Network
March 20, 2017
According to the USA-NPN's Spring Indices, spring is arriving 20 days earlier than a long-term average (1981-2010) in much of the South, Great Plains, Great Basin, mid-Atlantic, Midwest and parts of the Northeast. The Extended Spring Indices are models that predict the onset of early spring plants across the United States. You can see these maps as well as maps of Accumulated Growing Degree Days (AGDD) on the USA-NPN's Phenology Visualization Tool. Read the USGS Top Story here.
Nature's Notebook campaigns are a great way to learn about the phenology of species of special interest, and see how the timing of their phenology changes over time. By collecting data for these campaigns, you also contribute to important scientific research! This year we have a new campaign, Nectar Connectors, that focuses on species of special importance to pollinators. Visit the individual campaign pages to find out how to participate.