Heavy rains trigger extensive flooding in Montreal, power outages and highway closures

A storm system over Quebec on June 20, 2026 produced intense rainfall, with up to 150 mm recorded in parts of the Greater Montreal area. The deluge caused street flooding in the West Island borough of Pierrefonds, prompting police to cordon off streets and assist residents. More than 18,000 customers lost electricity as Hydro‑Québec responded to widespread outages. Highway 40 (exits 52 and 55) was temporarily closed, and Montreal‑Trudeau airport experienced flight schedule disruptions and baggage delays, though services have since resumed. Authorities reported no injuries and are monitoring the situation as water levels recede and transport routes reopen.