A classic fall windstorm will track through the Great Lakes Tuesday, bringing strong winds, snow, and rain across Ontario.
A compact area of low-pressure is forecast to deepen overnight Monday, as it tracks through Michigan. Bringing strong wind & rain across Southern Ontario. Concurrently, bringing snow to Northwestern Ontario.
SOUTHERN ONTARIO: STRONG WINDS & RAIN SHOWERS
By Tuesday morning, rain showers will become more numerous as a large area of precipitation moves north from the United States. 5-15mm of rainfall in the morning, preceded by sunny breaks across South Central & Southwestern Ontario by the early/mid afternoon. Temperatures will likely spike into the low teens by the afternoon.
Winds will become stronger throughout the late morning. Becoming the strongest through the afternoon and evening. Widespread wind gusts between 60-80km/h is expected through the afternoon/evening Tuesday. The strongest winds, potentially exceeding 90km/h, are possible in the Niagara Region, Prince Edward, Bruce & Grey Counties.
The strong winds will likely strip many of the remaining leaves from trees. Remember to clean fallen leaves from storm drains.
While the South contends with wind & rain, Northwestern Ontario will see snowfall. The heaviest snowfall is expected across far-Northwestern Ontario. Another area of snowfall is expected northwest of Thunder Bay. General amounts between 5-10cms is expected Tuesday.
Much colder air with light-snow, is expected for Thunder Bay through Wednesday & Thursday.
COLDEST AIR OF THE SEASON IS ON THE HORIZON
The warm up will be short-lived. The coldest air of the season, accompanied by lake effect snow arrives this weekend. Daily low temperatures will become consistently negative beyond Friday, November 9th across Southern Ontario. With daytime highs around the freezing mark for several days. Lake effect snow will really begin to ramp up beginning late week.