Climate Trends in Massachusetts and Their Impact on River Behavior

Thursday, June 1, 2017, 7:00–9:00 p.m., NRWA River Resource Center, 592 Main Street (Rt. 119), Groton, MA

Scientists at National Weather Service (NWS) are seeing changing trends in our precipitation and temperature patterns across New England, with an increasing trend in annual average temperature, annual average precipitation, and the number of heavy rainfall events over the past two decades. What does that mean for our rivers? How can changes in river behavior impact our communities?  Join us for this presentation by David Vallee, Hydrologist-in-Charge of the National Weather Service’s Northeast River Forecast Center. The Northeast River Forecast Center provides detailed water resource and life-saving flood forecasting services to National Weather Service Forecast Offices, and the hundreds of federal, state and local water resource entities throughout the Northeast and New York. NWS data shows that our region has experienced an increasing number of moderate to major flood episodes.  These episodes have been associated with a variety of storm types and have affected the region at different times of the year.  The common thread in each episode was the ability of each storm system to tap a tropical moisture source which resulted in very rainfall on already saturated ground.  This presentation will examine these observed climate trends, the atmospheric connections to the increased rainfall intensity of our weather systems, and the impacts it is having on river flood frequency in the region.

David has worked for the National Weather Service for 28 years, serving in a variety of positions.  He has extensive experience leading hydrometeorological forecast and warning operations and directing weather research and training programs.  David served as the NWS lead investigator with the SUNY Albany, on a multi-year project addressing Land Falling Tropical Cyclones in the Northeastern United States which improved the forecasting of heavy precipitation associated with these land falling tropical cyclones. His outreach and education work on the behavior of New England Hurricanes has included many appearances on local radio and T.V. networks as well as the Weather Channel, the History Channel and the Discovery Channel.  David has been the recipient of numerous regional and national awards including the prestigious National Isaac Cline Award for Leadership.  

This presentation is free and open to the public. Pre-registration is not required, but is appreciated for planning purposes.  To pre-register, please contact Wynne Treanor-Kvenvold, NRWA Communications Manager, at (978) 448-0299, or This email address is being protected from spambots. You need JavaScript enabled to view it..