The heat lingers a little longer in Ontario and Quebec. A chance for storms that could bring wind, rain and hail will return through the weekend. Although the storms are not expected to be a repeat of what happened last week, thunderstorms may be strong in some regions. On Saturday, the focus will be on the Laurentians in Quebec, where rotating storms are possible. To find what you need to know, read below.
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Saturday: Severe risk includes rotational storm potential in eastern Ontario, southern Quebec
The threat of severe thunderstorms will increase again Saturday as hot and humid conditions increase instability across parts of southern Ontario and southern Quebec.
The main focus will be the Laurentians with better dynamics for the development of strong storms in the afternoon hours. Spinning storms will be possible, but hail and strong winds will be more of a concern than the threat of tornadoes.
For southern Ontario, lakes will impact active weather. The lack of upper-level wind will encourage the development of lake-side storms between Georgian Bay and Lake Ontario. Lake Simcoe and the impact of the Oak Ridges moraines may bring heavy rain and possible training storms to the northern Greater Toronto Area (GTA).
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Sunday: A risk of severe weather creeps into southern Ontario
Sunday could start strong for parts of southern Ontario. We could see multiple rounds of thunderstorms across the region throughout the day on Sunday, with the first starting in the pre-dawn hours for the far southwest.
A line of storms may develop across the U.S. Upper Midwest Saturday night, moving across the southern Great Lakes overnight into early Sunday morning. This series of storms could wake people in southwestern Ontario to thunder and gusty winds.
Later in the day, the heat and humidity may allow the atmosphere to recover a bit from the morning’s activity. A cold front moving into the region could produce another round of thunderstorms in the afternoon. This second round of storms could reach serious limits, with strong wind gusts, small hail and heavy rainfall being the main threats.
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Looking ahead: A beautiful start to the last week of July
Conditions will become calmer and slightly cooler behind the cold front. We can expect lower humidity and temperatures around the season as we begin the last week of July, a change that will feel downright refreshing after the past week.
Our next opportunity for active weather will come in the middle of next week, followed by a return to pleasant conditions and near-seasonal temperatures heading into the long weekend.
Thumbnail courtesy of MZ taken in Embro, Ont.
Follow The Weather Network for the latest conditions in Ontario and Quebec.
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