Convective Discussion
A large low pressure system currently over the Great Lakes will move eastward today and tonight. A strong southwesterly jet will spread a very moist air mass with embedded thundershowers over the Maritimes tonight. The area of rain will spread northward to reach Western Labrador on Friday. Over the rest of Newfoundland and Labrador tranquil conditions are expected.
A cold front will approach Northern New Brunswick Friday giving a risk of afternoon thunderstorms.
Regional Impacts
Nova Scotia: Hourly rainfall rates of 15mm/h producing enhanced runoff over western region. Rainfall amounts of 20 to 40mm with the highest amounts along the South Shore.
New Brunswick: Hourly rainfall rates of 20mm/h or more producing enhanced runoff over the Fundy Region. Rainfall amounts of 20 to 40mm with the highest amounts over Grand Manan Island.
Jean-Marc Couturier