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Expect Heavy rains in Southern Ontario

The dark and damp weather will continue across southern Ontario on Tuesday, putting a quick end to the days of sunshine and dry weather that has spanned much of September so far.
These back-to-back rain days will bring a widespread 20-40 mm across the region by Wednesday, with some areas in line to see closer to 50 mm. This has prompted a rainfall warning in some areas, with the risk for flash floods and water pooling in areas that see the heavier downpours.An active storm track is helping to guide several low-pressure systems from the U.S. through Ontario this week.

Thunderstorms are even possible in parts southwestern Ontario on Tuesday afternoon, with rain becoming heavier as a more unstable air mass moves in Tuesday night. Some of these storms could approach severe criteria with strong wind gusts. The thunderstorm threat will continue through the overnight, as they track through the GTA.

In conclusion:.."Heavy downpours can cause flash floods and water pooling on roads," says Environment and Climate Change Canada (ECCC) in the warning.
By the time all is said and done, local rainfall amounts up to 50 mm are possible through Wednesday, with most locations recording between 20-40 mm

Environment and Climate Change Canada (ECCC)

The pseudos' noted when I use "In Conclusion" its AI generated...