More snow is set to sweep through most of Ontario Thursday Night into Friday, with the heaviest accumulations near Lake Erie and the traditional 401 corridor, including several major cities.

The tempestuous conditions that recently caused headaches across Southern Ontario bringing thunderstorms, heavy lake-effect flurries and winds will be superseded by further accumulating snow one more time this year.

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The recent Colorado Low led to several accidents, including a closure on WB 401 near Kitchener-Waterloo and a significant 50 car pile-up on HWY 400 near Barrie.

The two images below show the hazardous conditions on HWY 400 near Barrie today, Wednesday, April 4th.

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Thursday Night
Conditions will deteriorate somewhat from west to east and snow will engulf much of the aforementioned regions bringing a widespread swath of 2-4cm, with heavier amounts near the traditional 401, 402, 403 and QEW corridors.
Watch for slight SW enhancement off Lake Erie providing potentially, slightly increased amounts near the St. Thomas-London-Woodstock-Brantford corridors, with particularly higher confidence around the St. Thomas-London corridor.

Friday Morning
Conditions will slowly begin to improve by early morning from west to east.

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The Warmup? Where is it?
A pattern change is set to change weather across Eastern Canada through the 3rd and 4th week of April and thereafter, particularly into early May.

Conditions will drastically and exponentially warm to the low to mid to eventually, upper teens in May.

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Please stay tuned, as we at TCW are monitoring this situation attentively.

Drive safe and always be alert during hazardous conditions.

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