Much of the GTA is under two separate weather advisories as Environment Canada warned hot and humid conditions could bring severe thunderstorms to the region.
The federal weather agency issued both a rainfall warning and severe thunderstorm watch Tuesday morning.
“Conditions are favourable for the development of dangerous thunderstorms that may be capable of producing strong wind gusts, large hail and torrential rain,” Environment Canada said.
Up to 75 millimetres of rain could fall throughout the morning, while rainfall rates of 40 mm/h were possible at some points.
“Heavy downpours can cause flash floods and water pooling on roads. Localized flooding in low-lying areas is possible. Watch for possible washouts near rivers, creeks and culverts,” the rainfall warning said.
Thunderstorms could persist into the afternoon, according to Environment Canada. Wind gusts up to 90 km/h are possible, as well as nickle-sized hail.
“Thunderstorms will move east of the area by midday, however, the threat of heavy rain will persist for much of the day,” Environment Canada said.
Meanwhile, Peel police warned drivers that downpours were causing manhole covers to lift out of place.
They urged drivers to be cautious and use the full headlight system on their vehicles.