The Great Molasses Flood: Two Million Gallons Hit Boston at 35mph | 5 Minute Strange
7m | Aug 2, 2026On January fifteenth, nineteen nineteen, a steel storage tank holding over two million gallons of molasses burst in Boston's North End. The wave that followed was estimated at twenty-five feet high and thirty-five miles per hour at its fastest. It tore buildings from their foundations, knocked down sections of the elevated railway, trapped horses, and swept people through the streets before they understood what was happening. Twenty-one people died. Around one hundred and fifty were injured. The neighbourhood smelled of molasses on warm days for months afterward.
In this episode of 5 Minute Strange, we cover the full story of the Great Molasses Flood — the storage tank that had been groaning and leaking for years while local children collected the drips in tins, the warm January day that set off fermentation and increased the pressure inside, and the legal battle that followed in which the company blamed anarchists before investigators turned their attention to the tank's construction, its testing record, and the warnings that had been ignored. The case became one of the most important civil lawsuits in Massachusetts history.
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