The Montreal flood of 1987 happened July 14th.
Strong thunderstorms hammered the island that afternoon.
Over 100 millimetres of rain fell during a 2 and a half hour or so period.
The sewer systems were overwhelmed by the deluge and the city was paralyzed by the flooded roads.
The Decarie Expressway quickly filled with water, trapping motorists.
Some 350-thousand houses lost electricity, and tens of thousands had flooded basements.
Two people died, one in a submerged car and another was electrocuted.