© John Mahoney / Montreal GazetteDamage in Montreal's Notre-Dame-de-Grâce Park following microburst rain storm.
In Lachute, where on Tuesday one resident saw part of their rooftop torn away like a sheet of paper and another found their trampoline wrapped around a nearby tree, they learned what a tornado can do.
In Montreal, where on the same day
high winds punched a 20-block path of destruction through the neighbourhood of Notre-Dame-de-Grâce, we learned what a microburst can do.
Meteorologically speaking, the phenomena are utterly different. But when it comes to their capacity for destruction, they are chillingly alike.
Environment Canada meteorologist Max Desharnais said Wednesday that his office was able to determine that N.D.G. had been hit by a microburst simply by the grim symmetry of the destruction left in its wake.
"Based on the signature of the damage - (fallen) trees laid out in one direction - that's a microburst," he said. "It's a unidirectional signature. ... With a tornado you'll have a roof literally peeled off and a visible signature of rotation."
Comment: (Update - Sept. 2): The death toll is now at least 1,400 across India, Nepal and Bangladesh.