Environment Canada has issued a severe thunderstorm watch for Toronto, warning of the potential for heavy rainfall, damaging winds and large hail as this week's mid-summer humidity continues.
A similar watch is in effect for much of southern Ontario.
The weather statement says there is the potential for 50 to 80 millimetres of rainfall on Wednesday afternoon and evening within the space of a few hours.
Winds in excess of 90 km/h are also possible.
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