Thunderstorms could bring hail, strong winds to southern Ontario

Scattered thunderstorms are expected across parts of southern Ontario this morning, with the potential for stronger storms Tuesday afternoon and evening.

The forecast calls for scattered thunderstorms capable of producing hail up to the size of a quarter and heavy rainfall overnight. The heaviest rain is expected across northern portions of southwestern Ontario and areas north of Lake Simcoe.

Rainfall totals could reach 30 mm, with local hourly amounts of up to 20 mm.

Isolated thunderstorms are also possible across parts of southern Ontario, with rainfall totals of up to 20 mm and local hourly amounts of up to 15 mm.

Stronger storms possible Tuesday afternoon

Strong to severe thunderstorms are possible across parts of southern Ontario Tuesday afternoon and evening.

These storms could produce wind gusts of up to 90 km/h, hail ranging from nickel to toonie size and locally heavy downpours.

Potential impacts include loose objects being tossed around, broken or downed trees, power outages and damage to plants and crops.

Rainfall totals could reach 30 mm in affected areas, with local hourly amounts of up to 20 mm.

Scattered thunderstorms are also expected across parts of southern, central and northeastern Ontario, where locally heavy rainfall is possible. Rainfall totals could reach 40 mm, with local hourly amounts of 20 to 30 mm.