East Coast and Quebec face severe weather and flood risks

A strong cold front moving from Hudson Bay across the eastern United States and into Canada is expected to trigger rounds of showers and thunderstorms this weekend. In the United States, the combination of a moisture-rich air mass and slow-moving storms poses a significant flash-flood risk, particularly from the Ohio Valley through the Mid-Atlantic and Northeast. High-density areas along the I-95 corridor, including Richmond, Washington, D.C., and New York City, are at risk due to saturated soils and heavy rainfall.

In Canada, southern Quebec faces a risk of severe storms on Sunday as the cold front moves through an unstable air mass. The primary hazards identified include strong wind gusts and locally heavy rainfall. Storm activity is expected to be most intense along the borders of New York and Vermont, with coverage potentially organizing into a broken line of storms during the afternoon and evening.