As B.C.’s next atmospheric river arrives Tuesday, here’s what to expect

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BC is watching and waiting to see what happens when the third atmospheric river arrives on Tuesday.

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This follows on the heels of a heavy rain event from November 13 to November 15 and then another storm that followed over the weekend.

Armel Castellan, a warning preparedness meteorologist with Environment and Climate Change Canada, said Monday BC is currently in a 24-hour break.

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He said the second storm that occurred over the weekend was “impressive”.

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About 104 mm fell in Abbotsford, while 127 mm was recorded in Hope.

The third atmospheric river is coming from the Philippines, Castellan said, and will deliver a “relatively strong punch” similar to what we saw later this week.

50 to 100 mm of rain is expected on the south coast during the next storm, Castellan said, with 50 more north coast mountains near the border.

He said the Asha could see between 60 and 90 mm, while Abbotsford could achieve between 40 and 70 mm along the Coquihalla summit.

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Castellan said one of the bigger concerns would be the potential for ice melting in some areas, which could add to the total water total.

“It will be problematic because (hurricanes) are coming so close back-to-back with runoff and saturated soil,” he said.

But this new storm is not the only concern of the South Coast.

Castellan said the north coast could receive up to 40 centimeters of snow, followed by freezing rain. This will affect areas like Terrace and Stewart.

In the interior, such as Golden and Shuswap, the transition to higher freezing levels will bring a lot of rain, he said, and the Central Coast, such as Bela Coola and Bela Bella, will receive the most rain – in some cases up to 200 mm can fall.

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Castellan said some strong winds are also expected, which could make cleanup efforts even more difficult.

Castellan said the province would get another break on Thursday and Friday, before further weakening the weather system on Saturday.

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