Winter 'yo-yos' over the Great Lakes region

·4 min read
Winter 'yo-yos' over the Great Lakes region
Winter 'yo-yos' over the Great Lakes region

A brief burst of well above seasonal temperatures on Thursday will be followed by much cooler conditions as we head into the first weekend of December across southern Ontario. The flip-flopping pattern between mild and cold air will bring both periods of rain and snow to the region, with some areas picking up as much as 15 cm through Saturday. While parts of the Greater Toronto Area could see a few wet flakes on Saturday afternoon, a more widespread snow tracks in for Sunday, though with temperatures once again rising throughout the day. More on the winter yo-yo and the unsettled conditions that come with it, below.

Hitting the slopes? Be sure to check conditions first with The Weather Network's Ski Report!

THURSDAY INTO FRIDAY: RAIN FOLLOWED BY SNOW AS TEMPERATURES TUMBLE

Light rain and milder temperatures will mark Thursday across much of southern Ontario, though with sunny periods expected at times during the afternoon as well. While temperatures will rise well above the freezing mark, gusty winds will make it feel rather unpleasant for some.

Special weather statements are in effect for strong southwesterly winds gusting up to 80 km/h, before shifting to a northwest direction through the afternoon and evening hours.

"High winds may toss loose objects and cause tree branches to break," warns Environment and Climate Change Canada in the statement. "Local power outages are also possible."

The shifting winds could also stir up some local lake-effect snow squalls for areas south and east of Lake Huron and Georgian Bay through Friday morning.

WEEKEND: UNSETTLED PATTERN PERSISTS WITH MORE RAIN AND SNOW EXPECTED

A swath of snow associated with a clipper system will move from northwestern Ontario and across the northeast into cottage country through Saturday.

ONSNOWWeekend
ONSNOWWeekend

"This looks to be in the range of 5-10 cm of snow in the northwest, and 10-15 cm across northeastern Ontario," says Nadine Powell, a meteorologist at The Weather Network. "And while the GTA could see a few wet flakes Saturday afternoon as a band of snow extends into the area, more widespread snow tracks in for Sunday."

At this point, it looks like areas south of the 401 corridor will see mostly rain with the Sunday system, but northerns parts of the GTA and cottage country could see some heavier snow accumulations add up.

ONSouthWindGustLR
ONSouthWindGustLR

"On Monday morning, a rain/snow mix is likely along the 401 corridor, but by the afternoon hours, the GTA will be precipitation free, with snow continuining into eastern Ontario," says Powell.

Temperatures are expected to fall throughout the day, with a strong and gusty wind picking up. Bands of lake-effect snow will develop during the afternoon and evening hours across the snow belts southeast of Lake Huron and Georgian Bay.

ONSouthWindGustLR
ONSouthWindGustLR

Forecasters are also watching the potential for a Colorado low for next Tuesday through Wednesday across southern Ontario.

WATCH BELOW: WHAT'S SO SPECIAL ABOUT WINTER TIRES? THIS EXPERT HAS THE ANSWER

Click here to view the video

Be sure to check back for the latest updates on the unsettled pattern across southern Ontario.

Our goal is to create a safe and engaging place for users to connect over interests and passions. In order to improve our community experience, we are temporarily suspending article commenting