Polar vortex: temperatures to plunge for the weekend
Posted January 15, 2025 4:14 pm.
A polar vortex of ultra-cold Arctic air is heading for much of Canada.
Temperatures are expected to drop between 20-25 degrees Celsius in a short period of time, depending on the region.
In Montreal, for instance, temperatures will drop from a high of 1 C on Saturday to a low of minus-19 on Sunday. The mercury will continue to drop into Monday and Tuesdays, with lows of minus-26 and minus-27, respectively.
The temperature fluctuation is expected to be even more pronounced in regions north of Montreal.
In Winnipeg, temperatures will drop from a high of 0 C on Friday to a low of minus-27 on Saturday – a change of 27 degrees in just a few hours. Sunday’s low is forecasted for minus-31 degrees.
A polar vortex usually spins around the North Pole, but it sometimes ventures south into Canada and the U.S.
Some experts say such events are happening more frequently, paradoxically, because of a warming world.
