With a third atmospheric river in a week barrelling down on B.C. in a week, Environment Canada issued a series of weather alerts this morning.

The statement for Metro Vancouver calls for a "prolonged period of heavy rain" lasting through Wednesday (December 1).

It will dump 60 millimetres over central Vancouver, 60 to 80 millimetres over southern sections of the Sunshine Coast, and up to 120 millimetres near the North Shore mountains and Squamish.

"Heavy downpours can cause flash floods and water pooling on roads," Environment Canada stated. "Localized flooding in low-lying areas is possible. Watch for possible washouts near rivers, creeks and culverts."

In the Fraser Canyon, there's a wind warning, with gusts expected to reach 90 kilometres per hour late this afternoon and tonight.

Along the Coquihalla Highway from Hope to Merritt, the national weather forecaster says that heavy rain "may have imacts to vulnerable landscape and infrastructure".

All the other new alerts for B.C. are available here.