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Santa won't be coming into town alone! See which areas are on track for late season thunderstorms and powerful winds on Sunday.

Strong winds, even a chance of thunderstorms, are in Ontario's Sunday forecast

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Digital writers

Sunday, November 17, 2013, 5:21 PM -

Strong winds, plummeting temperatures and storms await people in Ontario, starting Sunday.

In the north, at-times heavy rains look likely, while southern Ontario is on track for late-season thunderstorms, potentially severe in isolated cases.

"Scattered rain showers will move into the Nickel Belt this evening and continue to spread eastward overnight into Sunday," said Brian Dillon, a meteorologist at The Weather Network. "Rain showers and strong southwesterly winds will affect southern Ontario throughout the day Sunday. At the moment, the Toronto Santa Claus Parade looks fairly unsettled with gusty winds and isolated rain showers -- stronger winds and the threat of an isolated thunderstorm are expected after the parade."

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The big shift in conditions is due to a Colorado Low that is on its way to the Great Lakes region, bringing a fall rainstorm but also warm air, raising temperatures into the teens,

The downside: Very strong winds will accompany it, 60-80 km/h on Sunday and up to 100 km/h at night.

"Throughout the day, winds will be increasing, and behind them, cold air," added Dillon. "Your Monday morning commute in southern Ontario will still be windy, with gusts up to 100 km/h and temperatures dropping throughout the day."

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Potential for snow in the northwest

The rain may change to snow in communities west of Wawa.

"The system coming out of the Prairies will bring moderate snow to northwestern Ontario Saturday evening through Monday," said Dillon. "Thunder Bay could see up to 5 cm of snow, with the heaviest snow being north of Geraldton and Sioux Lookout, where amounts can range above 15 cm."

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