Heavy rain sparks High Streamflow Advisory for lower Fraser River basin while the coast faces possible minor flooding

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Due to heavy rain, high streamflow advisories now include the lower Fraser River basin as well as the south and central coasts, including the Sea to Sky region, and most of Vancouver Island.

Parts of the island have seen up to 210 millimetres of rain since Thursday in the first major weather system of British Columbia’s storm season, which could combine with high tides to soak some low-lying coastal areas.

B.C.’s River Forecast Centre says the rainfall is part of a series of atmospheric river systems expected to drench coastal areas in the coming days.

It says waterways are rising rapidly, with flows in parts of northern and western Vancouver Island reaching two- to five-year return levels on Friday.

Environment Canada has meanwhile issued a coastal flooding statement for much of Vancouver Island’s west coast, saying elevated ocean levels combined with strong winds and waves could push waters above the highest astronomical tides.

It says minor flooding along low-lying shorelines is likely this weekend.

The River Forecast Centre says a second bout of rain will arrive later today, stretching into Sunday, with the heaviest downpours expected on Vancouver Island and in the Sea to Sky and Howe Sound areas, along with the North Shore mountains.

A third storm that’s expected to hit Monday may bring a more prolonged period of rainfall across B.C.’s coast through next week, the forecaster says.

This report by The Canadian Press was first published Nov. 7, 2026.