As the remnants of Tropical Storm Debby move northward from the United States, significant rainfall is anticipated across large parts of Ontario and Quebec this week, according to Environment and Climate Change Canada.
Forecast and Impact
Jennifer Smith, a national warning preparedness meteorologist at Environment Canada, reported that the storm, currently situated over the Carolinas, is expected to weaken into a tropical depression and become post-tropical by Friday as it tracks across the eastern United States.
“The remnants of the storm will interact with a low-pressure system over the Great Lakes, potentially bringing impactful rainfall to the region before moving east into Atlantic Canada,” Smith said.
Rainfall and Thunderstorms
Rainfall from the remnants of Debby could begin as early as Thursday, with showers and thunderstorms likely to develop across eastern Ontario and southern Quebec. Areas from Toronto to Georgian Bay, Algonquin Park, and east to Montreal and the Laurentians are expected to experience significant precipitation.
From Friday into Saturday, the storm is projected to move over eastern Quebec and northwest New Brunswick, bringing heavy rainfall to the Saint Lawrence River Valley and Quebec City.
Rainfall Totals and Flooding Concerns
Smith warned of possible flash flooding, particularly in urban centers like Ottawa and Montreal. Rainfall amounts could exceed 50 millimeters, with localized totals over 100 millimeters. The bulk of the rain over Ottawa and Montreal is expected between Friday morning and late Friday night.
Precautionary Measures
“It is important to stay vigilant and follow online warnings and forecasts issued by Environment and Climate Change Canada as weekend plans are being made,” Smith advised.
Residents in the affected areas are encouraged to monitor weather updates and prepare for potential flooding and hazardous conditions.
