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The Great Molasses Flood | Footnote to History

The Great Molasses Flood | Footnote to History
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On January 15, 1919, a giant molasses tank in Boston’s North End exploded, resulting in the “Great Molasses Flood.”

great molasses flood
Photo/Art by Leslie Jones Collection. Courtesy of the Boston Public Library
Section of tank after Great Molasses Flood explosion. 1:00pm

In January of 1919 Purity Distilling Company of Boston, maker of high-grade rum, was working three shifts a day in a vain attempt to outrun national Prohibition. The company’s huge iron tank along the water’s edge at 529 Commercial Street in the North End was filled with more than two million gallons of molasses. Pipes entering the tank were heated to aid the flow of the dense liquid. A solitary vent was the only outlet for the fermenting gases.

It was just after noon on January 15 when the great molasses tank exploded with a ground-shaking blast. Those nearby who survived the ensuing catastrophe reported strange noises coming from the tank just before it let go. “It was like someone was on the inside hammering to get out,” said one witness.

A massive tidal wave of molasses swept across Commercial Street, smashing into a house at 6 Copps Hill Terrace, demolishing the building and killing Mrs. Bridget Clougherty. The metal latticework of the Boston Elevated Railway Company’s Altlantic Avenue line, running above Commercial Street, was struck by a large chunk of the shattered tank. A section of the El collapsed. A quick-thinking motorman, seeing the rail disappear ahead of the train, dashed to the rear car and, with the steel wheels spinning, managed to get it headed in the opposite direction.

The Bay State Street Railway freight depot and several motorized boxcars were destroyed. On the waterfront, Boston Fireboat #31 was sunk at its dock with loss of life. A five-ton Mack truck was picked up by the wave of molasses and slammed into a building. The city paving department office and stable were erased within seconds, killing five men and a number of horses. Scores of buildings, vehicles and bystanders were swept away. In all, 11 people were killed and more than 50 injured by the explosion.

A playground and baseball field presently occupy the site of the blast. Local residents claim that on a steamy summer night you can still smell the sweet aroma of molasses.

Excerpt from “How Slow is Molasses in January,” Yankee Magazine, January 1989.

Updated Monday, January 12th, 2015

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2 Responses to The Great Molasses Flood | Footnote to History

  1. Richard Moyer January 15, 2015 at 9:49 am #

    I was told that a marker was placed near the site of the molasses flood. The last time I was in Boston, I searched for the marker. I could not find it.
    Does such a marker exist now in the North End of Boston?

  2. Sue Winn January 18, 2015 at 8:21 pm #

    Yes, the marker exists!

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