Multi-day storm risk with hail, heavy rain pops up in Atlantic Canada

An extended stretch of unsettled weather is taking aim at Atlantic Canada, with rounds of heavy rain and the potential for severe storms with hail into early this week

Multiple systems tracking through Atlantic Canada will bring a setup for stormy weather for parts of the region through Monday.

Sunday's storm threat will be confined to New Brunswick, P.E.I. and western Newfoundland, while the potential shifts south on Monday to include Nova Scotia and locales in Newfoundland.

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The chance for severe storms with heavy rainfall, strong winds and small hail will be most favourable in parts of New Brunswick on Sunday, while central and eastern Nova Scotia, and parts of P.E.I, see the most ideal setup on Monday.

Keep an eye on the radar and listen for severe weather alerts in your area as you go about your day.

Sunday: Storm threat arises for parts of Maritimes and Newfoundland

Sunday-morning showers pushing across New Brunswick and western P.E.I. will continue slumping southward through the provinces as the day progresses.

Atlantic Canada precipitation forecast Sunday afternoon

Through the afternoon and evening, the showers will fill in across Nova Scotia and Newfoundland.

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The main area for thunderstorm development on Sunday will be New Brunswick, P.E.I. and western Newfoundland. Stronger storms could bring heavier rain totals, strong wind gusts and small hail, and will likely push across northern and western New Brunswick, bordering with Maine.

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Atlantic Canada storm Sunday

Showers and storms will then clear out of New Brunswick, leaving foggy conditions Sunday overnight, but rain will continue over Nova Scotia and western Newfoundland.

Monday: Chance for severe weather will shift to include Nova Scotia

On Monday, the storm threat will reappear. This time, a low drags the instability and moisture across Nova Scotia and NL.

Atlantic Canada precipitation Monday afternoon

The thunderstorm risk will extend from central New Brunswick through Nova Scotia, P.E.I. and into western Newfoundland. Some of the storms could turn severe, bringing heavy rain and strong winds, particularly in central and eastern Nova Scotia (Cape Breton), and eastern P.E.I.

Monday night will see widespread rain across Newfoundland, with the chance of some nocturnal storms. The heaviest rain will fall around the Green Bay and White Bay areas, as well as Gander and Bonavista.

Atlantic Canada storm risk Monday

The rain, heavy at times, could causing pooling and ponding on roads.

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The rain will end through Tuesday morning.

The heaviest rainfall will occur from southern New Brunswick, including Fredericton and Moncton, to Highway 104 into Nova Scotia, as well as western and central Newfoundland. Some of those areas could see 30-50+ mm of rainfall, especially in parts of Newfoundland.

Atlantic Canada rainfall through Tuesday morning

Thunderstorm safety

As we navigate through these dynamic weather patterns, it is essential to stay informed and prioritize safety. Whether bracing for severe thunderstorms or enjoying cooler temperatures, being prepared can make all the difference.

Below are a few thunderstorm safety tips to keep in mind throughout the summer:

  • Stay Indoors: If you hear thunder or see lightning, seek shelter indoors. Avoid windows and doors to prevent injury from flying debris.

  • Unplug Electronics: To protect your devices from power surges, unplug electronics and avoid using corded phones during a storm.

  • Avoid Flooded Areas: Never attempt to walk or drive through flooded areas, as water depth can be deceptive and currents can be dangerous.

  • Stay Informed: Keep an eye on local weather updates and alerts. Use a battery-operated weather radio or a reliable weather app for real-time information.

  • Have an Emergency Kit Ready: Ensure you have supplies such as water, non-perishable food, flashlights, batteries, and a first aid kit in case of power outages.

Stay with The Weather Network for more information and updates on your weather across Atlantic Canada.