In a new PNAS study led by Kevin Chen (Penn C’24) and Mann Research Group coauthors, we examine trends in the characteristics of U.S. east coast winter storms, known as nor’easters.  Using a cyclone tracking approach combined with long-term reanalysis data, we present a comprehensive historical record of Atlantic nor’easters and reveal that the strongest nor’easters are becoming stronger, suggesting further coastal risks in a warming climate.

Omnia: https://omnia.sas.upenn.edu/story/strongest-noreasters-getting-stronger-Michael-Mann

CNN: https://www.cnn.com/2025/07/14/climate/noreaster-storm-global-warming

NewScientist: https://www.newscientist.com/article/2488080-noreasters-slamming-new-england-are-growing-more-powerful/

Blog Post: https://michaelmann.net/the-intensification-of-the-strongest-noreasters/