Extreme heat prompts warnings on East Coast, heightened risk for severe storms

·2 min read
Extreme heat prompts warnings on East Coast, heightened risk for severe storms
Extreme heat prompts warnings on East Coast, heightened risk for severe storms

The Atlantic region has some relief in sight from the intense heat of recent days, but Wednesday will still be toasty for many, and crowned with an elevated severe storm risk for parts of Nova Scotia and New Brunswick. Cooler days are ahead for Canada Day, however, with widespread rain threatening any "long weekend" plans. More on what to expect, below.

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WEDNESDAY: HEAT WAVE PERSISTS, SEVERE STORM THREAT RISES

Some of the Atlantic region will see this lastest bout with uncomfortable heat abate somewhat Wednesday, but that relief looks to be mostly in northern New Brunswick. The rest of that province, along with Nova Scotia, still expects daytime highs in the high 20s.

The lingering humidity will boost the feels-like factor past 30 in those cases.

ATL heat
ATL heat

As heat warnings issued by Environment Canada remain in effect for Nova Scotia and southern New Brunswick, the Department of Health also issued a "level one heat alert" for areas including Moncton and Fredericton. At level one, the province warns that certain vulnerable people, including young children and older adults, may be affected by the heat.

That humidity will be a catalyst for thunderstorms as a low-pressure system approaches the region Wednesday. Unlike Tuesday's storm risk, this latest round carries some potential for severe thunderstorms across a large slice of the Maritimes.

Where storms do turn severe, strong winds, large hail and heavy downpours will be the main threats.

QCATLRiskWed (1)
QCATLRiskWed (1)

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While steamy, temperatures across the east pale in comparison to the dangerous and all-time record heat impacting much of Western Canada.

CANADA DAY AND BEYOND: TEMPERATURES TAKE A DECENT TUMBLE, WIDESPREAD RAIN THREAT

A few rounds of showers and thunderstorms are expected for Canada Day and beyond, fuelled in part by a cold front that will send temperatures gradually downward. In fact, some parts of the region will struggle to reach the double digits, while staying relatively warm for others on Thursday.

June 28 2021 PM ATL Temps Thursday
June 28 2021 PM ATL Temps Thursday

"Quite a temperature contrast for the region on Canada Day, with upper 20s to near 30°C for southern and western parts of the Maritimes, while temperatures across Newfoundland struggle to reach double digits," Weather Network meteorologist Dr. Doug Gillham says.

A widespread soaking rain follows for Friday as a system tracks just south of the Maritimes, lingering into Saturday for Newfoundland. That's as temperatures tumble below seasonal values right across much of Atlantic Canada.

Temperatures recover back to near seasonal early next week, with drier weather expected for the first half of the week.

Be sure to check back for the latest updates across Eastern Canada.

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