Overview
- Environment and Climate Change Canada unveiled the seasonal forecast and an expanded tool that evaluates how climate change alters the likelihood of extreme precipitation.
- Since June 2025, researchers assessed 42 major precipitation events and found 39 were made more likely by warming, with three events 2 to 10 times more likely, including in Happy Valley–Goose Bay, Labrador, and western Baffin Island, Nunavut.
- The rapid attribution system can deliver results about 24 hours after a severe precipitation event ends by comparing today’s climate with a pre‑industrial baseline using climate models.
- Guided in part by a weak La Niña, the outlook projects warmer‑than‑normal conditions across the eastern Arctic and Hudson Bay communities, near‑normal temperatures for eastern Nova Scotia and southwestern British Columbia, and colder pockets in parts of Yukon, the Northwest Territories, and western Nova Scotia.
- Forecasters anticipate more precipitation near the Rockies and a more dynamic pattern in the east, and ECCC urges Canadians to monitor alerts and use the WeatherCAN app to prepare.