Great Molasses Flood: US marks 100 years since deadly wave of treacle trashed part of Boston
- January 15, 1919 was the day the treacle didn’t trickle, as a tsunami of molasses swept through the city, killing 21, injuring dozens and destroying a district

Slow as molasses? This treacle didn’t trickle. It was a sticky, deadly tsunami that flattened an entire Boston neighbourhood within seconds.
On Tuesday, the city marks the 100th anniversary of its most peculiar disaster – the Great Molasses Flood.

It struck without warning at midday on January 15, 1919, when a giant storage tank containing more than 8.7 million litres (2.3 million gallons) of molasses suddenly ruptured, sending a giant wave of goop crashing through the cobblestone streets of the bustling North End.
The initial wave rose at least 7.6 metres high (25 feet high) – nearly as tall as an NFL goalpost – and it obliterated everything in its path, killing 21 people and injuring 150 others. Rivets popped out like machine-gun bullets. Elevated railway tracks buckled. Warehouses and firehouses were pushed around like game pieces on a Monopoly board. Tenements were reduced to kindling.
