January 15, 1919
A rapid rise in air temperature caused a molasses storage tank to rupture at the Purity Distilling Co. in Boston, MA. 2.5 million gallons of mollases were released and poured out of the tank in 8 to 15 foot waves. The mollases rushed down streets at speeds of 35 mph and a force of 2 tons per square foot. Buidlings and cars in the area were crushed by the force. 21 people were molassassed to death and an additional 150 were injured.