Potential major storm late Sunday into Monday; A look at the long-range weather pattern

Before I get to the extended range, I just want to give a heads-up to the potential for a significant storm Sunday into Monday across the eastern half of the country.

Latest indications are that a major storm will track up through the western Great Lakes Sunday night. Ahead of the storm, it appears that we may see a large area of moderate to heavy rainfall from Ontario through Quebec later Sunday into early Monday.

Across southern Ontario, a warm front likely comes through Sunday evening, which would put the region into a warm and unstable environment. This may result in an outbreak of severe thunderstorms and even tornadoes later Sunday evening into Sunday night.

North and west of the storm center across northwestern Ontario, we may see accumulating snow and strong winds Sunday night into Monday from Thunder Bay on north and west.

I will keep you posted with more details on this storm as we get closer to the weekend.

<strong>Long range update</strong>
<img src="https://vortex.accuweather.com/adc2004/pub/includes/columns/miscellaneous/2017/590x363_04251558_apr25a.png"/>

<img src="https://vortex.accuweather.com/adc2004/pub/includes/columns/miscellaneous/2017/590x363_04251558_apr25b.png"/>

<img src="https://vortex.accuweather.com/adc2004/pub/includes/columns/miscellaneous/2017/590x363_04251559_apr25c.png"/>

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