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Weather Network Forecasts Abrupt, Colder Start to Winter Across Much of Canada

Forecasters cite a disrupted polar vortex plus a weak La Niña as the main drivers.

Overview

  • The Weather Network’s seasonal outlook released Nov. 26 projects most regions near or colder than normal with near or above normal precipitation and snow from December through February.
  • Prairies and central Canada face the strongest cold signals with a heightened risk of extended severe outbreaks and colder conditions likely lingering into March.
  • Ontario and Quebec are set for a cold, wintry start with abundant lake-effect snow and near- to above-normal totals, though milder stretches could emerge later in winter.
  • British Columbia trends cooler in the interior with above-normal snow in the Rockies and Kootenays while coastal areas stay near normal with a lower-than-usual Pineapple Express risk.
  • Atlantic Canada is forecast to be changeable with early cold and several high-impact storms, with below-normal snowfall possible in Halifax and eastern Newfoundland; Yukon and the Northwest Territories skew near normal while much of Nunavut tilts warmer than normal.