Southern Quebec Floods Disrupt Roads, Power and Prompt Insurance Alerts

Heavy rain on June 20‑21, 2026 dumped 100‑150 mm of water across southern Quebec, causing flash flooding in Val‑des‑Monts, Montreal's West Island and the South Shore. Roads such as Route 307, Chemin de la Montagne, Chemin de l'Église and sections of Highway 40 were closed, and police urged residents to stay home unless travel was essential. Hydro‑Québec reported about 7,500 customers without electricity, while Saint‑Constant declared a local state of emergency. The storms also disrupted flights at Montréal‑Trudeau Airport.

Insurance experts warned that most standard Canadian home policies do not cover overland flood or sewer‑backup damage, leaving many homeowners liable for costly repairs. They noted a 45 % rise in premiums over six years and that flood losses in Quebec and Ontario accounted for roughly $3.7 billion of the $8.6 billion total catastrophe claims in 2024. Canadians are urged to verify whether they carry optional flood endorsements to avoid out‑of‑pocket expenses.