Leftovers from Beryl to soak southern Ontario and Quebec with heavy rain

After Beryl made its third and final landfall as a Category 1 hurricane early Monday morning near Matagorda, Texas, the remnant moisture associated with the once powerful storm will make its way north of the border this week.

Beryl began to quickly weaken as it moved inland on Monday while still bringing significant rainfall and flooding to Texas, resulting in at least two deaths.

Red Cross Appeal: Hurricane BerylRed Cross Appeal: Hurricane Beryl

Red Cross Appeal: Hurricane Beryl

On Tuesday, only a low-pressure system will remain of the historic storm. By the time the low reaches the Mississippi Valley, an upper-level trough in the atmosphere over the central states will capture and fling the moisture towards southern Ontario and Quebec.

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Southern Ontario and Quebec feels Beryl’s remnants on Wednesday and Thursday

The earliest we can expect this moisture-packed low to reach the provinces is on Tuesday overnight, then ramping up Wednesday morning. Eastern Ontario and Quebec can expect to see rainfall by early Wednesday afternoon. It will file in from the south, through the Ohio Valley, over Lake Erie, and move northward in waves through Thursday.

Beryl remnant moisture heading into Ontario and QuebecBeryl remnant moisture heading into Ontario and Quebec

Beryl remnant moisture heading into Ontario and Quebec

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While driven by an upper-level trough, at the surface, the system will send a warm front through southern Ontario and Quebec. Around this front is where we expect to see the heaviest rain fall, as well as the risk of thunderstorms.

At this time, it’s too soon to give precise rainfall totals for the provinces, but localized forecasts are expected to exceed 50 mm through Thursday. There is also a degree of uncertainty as to where the most rainfall will be.

NWSSPC Excessive Rainfall Outlook Great Lakes and U.S. Northeast July 8NWSSPC Excessive Rainfall Outlook Great Lakes and U.S. Northeast July 8

NWSSPC Excessive Rainfall Outlook Great Lakes and U.S. Northeast July 8

Currently, computer models are suggesting the 401 corridor may be the subject to the highest totals, but this could change leading up to the event.

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It can be easy to think that southern Ontario and Quebec is going to be struck by a hurricane-force storm when we say that the remnants of Beryl will reach the provinces. We can assure you, though, that is not the case. Hurricanes need warm oceanic water to sustain themselves and will deteriorate rapidly when starved of that fuel.

Ontario and Quebec rainfall through ThursdayOntario and Quebec rainfall through Thursday

Ontario and Quebec rainfall through Thursday

By the time this system reaches southern Ontario and Quebec, it won’t even be a tropical depression by then.

What we will see is a tropical moisture-laden low-pressure system. The main risks presently with this system in Ontario and Quebec will be heavy downpours, the risk of thunderstorms, and localized flooding.

The localized flooding from heavy downpours could also cause a significant amount of storm water runoff to make its way into Lake Ontario, raising the lake’s pollution levels.

Ontario and Quebec thunderstorm risk map TuesdayOntario and Quebec thunderstorm risk map Tuesday

Ontario and Quebec thunderstorm risk map Tuesday

Not the first time

This isn’t the first time Ontario and Quebec has felt the lingering impacts of a tropical system.

The hurricane database has 50 cases of remnant storms or tropical depressions moving across southern Ontario since 1876, with only seven of them landfalling in Texas.

Beryl remnant moisture forecast track mapBeryl remnant moisture forecast track map

Beryl remnant moisture forecast track map

Yes, the best track proxy for this setup is Hurricane Ike back in September 2008, a Texas landfalling storm. Of course, Sandy is a prime example of how strong a storm can become once its fully extratropical, occurring in October of 2012.

As well, Hurricane Fran’s impacts were felt in southern Ontario in September of 1996 when the then-tropical depression dumped 66.4 mm of rain at Toronto Pearson International Airport.

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More recently, remnants of Hurricane Isabel dumped more than 30 mm at Pearson airport in September of 2003.

Alberto in May 2018 was also an incredible rarity as the National Hurricane Center kept the storm a tropical depression as it crossed Manitoulin Island on May 31, 2018.

In 2020, Tropical Storm Cristobal made an incredibly rare feat, with tropical remnants crossing Lake Superior on June 10, 2020. The system held onto tropical characteristics into southern Wisconsin.

Stay with The Weather Network for more forecast information and updates on your weather across Ontario and Quebec.

WATCH: Destructive scenes as Hurricane Beryl sets record in the Atlantic

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