Environment Canada has issued a rainfall warning for Toronto and the surrounding GTA as up to 50 mm is expected over the next 24 hours.
The weather agency put out the alert just before 6 a.m. on Tuesday. It says the rain will begin late this afternoon and taper off through Wednesday morning.
“Showers are expected to push into the region through the afternoon as a moisture laden system moves into the Great Lakes Basin. The showers are expected to become more widespread and heavy at times tonight along with the risk for thunderstorms as a more unstable air mass moves in,” Environment Canada said.
“Showers will continue into Wednesday morning but are expected to become more isolated and ease off in intensity. Some areas may potentially receive in excess of 50 mm but there still remains a high degree of uncertainty,” it continued.
The rainfall warning is also in effect in Ajax, Mississauga, Brampton, Vaughan, Markham, Waterloo and Cambridge, among others.
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Tuesday’s daytime high is 20 C with a 40 per cent chance of showers in the morning and early afternoon.
On Wednesday, showers are expected to continue throughout the day coupled with a risk of a thunderstorm, and a high of 24 C. Environment Canada predicts a local amount of five to 10 mm of rain.
The city could finally see some sunshine on Thursday as the forecast calls for a mix of sun and cloud with a high of 23 C. Friday is expected to be mainly sunny as well with a high of 21 C.
On Saturday, a mix of sun and cloud and a high of 21 C is expected, while Sunday could see a return of showers with a 30 per cent chance of rain and a high of 22 C.
Environment Canada warns that heavy downpours can cause flash floods, water pooling on roads, and localized flooding in low-lying areas.
Back in July, the city was hit by three major thunderstorms in the span of three hours and brought a record-breaking month’s worth of rain, resulting in widespread flooding across the city.
