'Never experienced anything to this size and effect:' CAO on Cape Breton storm

Environment Canada says parts of the island could see 10 to 20 millimetres more rain

The CAO for Port Hawkesbury, N.S., says the damage from a torrential downpour that saw more than 200 millimetres of rain dumped on parts of Cape Breton is unlike anything he's seen before.

"We've never experienced anything to this size and effect," said Terry Doyle. "And certainly, that's what I'm being told by others as well."

Doyle spoke Sunday from an emergency response co-ordination centre where representatives from Victoria, Inverness and Richmond counties and the province are gathered. A state of emergency was declared Saturday for those three counties.

DON’T MISS: Relentless rain prompts states of emergency in Nova Scotia

States of emergencies in Cape Breton, N.S., Sept 6

Doyle said the bulk of the damage is in Richmond County, around the Bras d'Or Lake, with a significant number of roads, bridges and driveways that are washed out.

Doyle and other municipal officials are asking people to stay at home to allow crews to repair roads.

Inverness County Warden Bonny MacIsaac said many roads are washed out and a lot of trees have fallen in her area.

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"There was a lot of floodwaters. Nobody wants to run into anything like that. And we're asking [people] not to drive through flooded roads. You might not see that the road is unstable underneath that," she said Sunday morning.

Cape Breton flooding/Tom Ayers/CBC

An RCMP vehicle drives through water from a brook that overflowed on Route 4 near South Side River Bourgeois, Richmond County. (Tom Ayers/CBC)

If people must travel, she said they should check 511, the provincial website providing road conditions, before going out.

The damage from the rainfall includes flooding, power outages and washed-out roads.

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Amanda Mombourquette, councillor for Richmond County District 4, said some residents are stranded due to road closures.

"[We're] very concerned about folks who may be in vulnerable situations who are now stranded from access to things like emergency services or the basics of going to get groceries, that kind of thing," she said.

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Additional rainfall Atlantic Canada through Monday

Rainfall warnings are in effect for Victoria and Cape Breton counties, as well as Sydney. Environment Canada says 10 to 20 millimetres of rain are expected from today until Monday morning, with higher amounts possible in some areas.

As of 8:30 a.m. AT Sunday, Nova Scotia Power's outage map shows that more than 5,000 customers provincewide are without power, mostly in Chéticamp.

Coun. Claude Poirier, who represents Chéticamp on Inverness County council, said most of the community is without power.

Cape Breton flooding/Province of Nova Scotia via CBC

Storm damage on Route 4 in Big Pond, Cape Breton, is shown on Saturday. (Province of Nova Scotia)

He said he wasn't aware of local storm damage or road closures because of the storm.

Poirier said the local Legion and fire department have opened up comfort centres so people can charge their devices or have a hot cup of coffee or tea.

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Municipalities in Cape Breton opened a toll-free support line Sunday — 902-625-7888 — where residents can report non-emergency issues and concerns.

Thumbnail courtesy of Tom Ayers/CBC.

This article was originally written by Giuliana Grillo de Lambarri and published by CBC News on Sept. 6, 2026.

WATCH: Flooding rainfall prompts state of emergency for Cape Breton