See pesky weather system to affect summer across Canada.
Digital Reporter
Thursday, July 2, 2015, 1:09 PM - Parts of the country will play a temperature switcheroo this weekend, courtesy of a low pressure system moving in from south of Alaska.
This system will track east into the Prairies for the weekend, slicing temperatures in some places by 10 degrees.
The low will cause a shift in the jet stream, producing a digging trough in the west. Calgary's forecasted high of 30oC Friday is expected to drop to 21oC into Saturday.
Saskatchewan could also see a chilly dip by about 10 degrees in some areas, while Manitoba could see a 5 to 10 degree dive in temperatures.
Moisture could bring the risk of thunderstorms Friday into the weekend for the Prairies, with the potential to become severe in nature. Hail, strong winds and frequent lightning are the greatest threats with these storms.
Most of British Columbia will likely not be influenced by this changing weather pattern, meteorologist Kelly Sonnenburg noted.
On the flip side, a ridge is expected to build into the weekend for Ontario and Quebec. Temperatures will spike along with humidity levels. Southern and central portions of Quebec could reach 30C by the beginning of next week.
While wet and cool conditions have dominated much of the forecast for southern Ontario, temperatures will jump up to seasonal or above. By Sunday, Toronto's forecasted high of 26oC will feel more like 30.
The cold front will bring the risk of thunderstorms into northern Ontario for the weekend, tracking into southern Ontario for Tuesday.
Source: The Weather Network
