An atmosphere filled with high humidity will fuel abundant rain and threats of thunderstorms across parts of southern and central Ontario through the weekend.
Rain and thunderstorm chances come on the heels of a multi-day heat event in Ontario and Quebecwith temperatures reaching 30 and humidex values exceeding 40.
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Both days will have rain and the possibility of thunderstorms, with the possibility of severe weather in parts of the region on Saturday. The main threats include heavy rain, gusty winds and large hail.
With the amount of rain expected in parts of the region until Monday between 50-100+ mm, localized flooding will be a concern.
Stay alert for watches and warnings as you head into the weekend.
Severe storms are possible again on Saturday
A low pressure system will drive the blustery conditions expected across much of Ontario this weekend. The low will hit the Great Lakes on Saturday, forcing several rounds of rain to sweep across the province.
Intense and widespread rains are expected throughout central Ontariowhile communities in southern and eastern Ontario can expect multiple storm opportunities on Saturday and Sunday.
Showers developed across central and eastern Ontario Saturday morning as a warm front moved into the region.
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Farther south, thunderstorms are expected to develop Saturday afternoon and move into Lake Huron. There is still some lingering uncertainty about where exactly these storms will develop and track, so factor the risk of rain into any daytime outdoor plans.
A large amount of atmospheric moisture hovering over Ontario will provide a vast reservoir for any showers or storms this weekend.
Be aware of the risk of torrential rain and strong gusts of wind in any storms that develop. Some areas could see more than 50-100mm of rain by Monday, which could lead to localized flooding in vulnerable areas. For storms reaching severe thresholds on Saturday, there is also a risk of hail.
Storm threat continues until Sunday
Our low pressure system will remain unsettled through the end of the weekend. Heavy rain will persist across central Ontario throughout Sunday.
Meanwhile, people in southern Ontario and the Greater Toronto Area will face a cold front that will hit the region on Sunday morning. Showers and thunderstorms will occur along and ahead of this front as it arrives.
The momentum is favorable for severe weather conditions in parts of eastern Ontario as storms arrive Sunday afternoon. Keep an eye out for the possibility of strong wind gusts, heavy rain and some hail in the area’s strongest storms.
Widespread rain will also hit Quebec, placing a rainy bumper on Saint-Jean-Baptiste day celebrations.
WATCH: Thunderstorms and thunderstorms roar over southern Ontario on Thursday
*Thumbnail courtesy of Getty Images/Doctor_bass Creative #: 105934727.
Stay tuned to The Weather Network for the latest forecast across Ontario.
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