Flood concerns grow on B.C.’s north coast as another atmospheric river moves


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Just days after southern parts of British Columbia were devastated by a historic atmospheric river, new warnings of potential flooding were issued for parts of the north coast.

Environment Canada has issued a winter storm warning for the interior regions of the north coast, including Stewart.

This region has received heavy snowfall lately and up to 25 centimeters are expected Friday evening and Saturday.

An area is likely to be inundated, as heavy snow will turn to heavy rain from Sunday to Monday.


Global BC


The threat of flooding arrives Sunday as the sixth atmospheric river of the season in British Columbia is expected to hit the region.

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This powerful system will bring heavy rains and mild temperatures until Monday. This will cause frost levels to rise to 1,000 meters as the area is pounded by rain.

Snow on the ground and low mountains could melt quickly.

The term “snow eater” has been used to describe this type of scenario, and the resulting flooding can be rapid and devastating, as southern British Columbia knows all too well by now.

According to Environment Canada, the snow “will melt as the rain system arrives and the drainage systems could be blocked or overflowed.”

“Localized or perhaps widespread flooding could result. Landslides could occur, ”added the national meteorological agency.

Meanwhile, a high flow notice was issued for areas closer to the coast.

The BC River Forecast Center issued the advisory for the “north coast, including Haida Gwaii and areas around Prince Rupert, Kitimat, Hartley Bay, Kemano and surrounding areas”.

A high flow advisory has been issued by the BC River Forecast Center for the North Coast.


BC River Forecast Center


According to Environment Canada, these areas could receive 100 to 150 millimeters of rain over the weekend.

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However, the BC River Forecast Center expects even more – 200 to 300 millimeters until Monday.

“The rivers should rise quickly during the night of Saturday and until Sunday,” warns the center.

“Flooding is not expected at this time, but forecasts and conditions can change quickly. “

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