^Robert M. Thompson Jr.; David R. Manning; Joseph Dellicarpini; Alan E. Dunham; Matthew L. Doody; Eleanor Vallier-Talbot; Tracy L. Mccormick (June 3, 2011). "Three Tornadoes Confirmed on June 1, 2011 in Massachusetts". National Weather Service office in Boston, Massachusetts. National Oceanic and Atmospheric Administration. Archived from the original on June 4, 2011. Retrieved June 5, 2011.