Heavy rain is on the way for Lower Mainland residents this weekend. 

According to a special weather statement from Environment Canada, an atmospheric river will impact B.C. and bring a prolonged period of heavy rain to the Fraser Valley, Metro Vancouver, and more.

The downfall is expected to begin on Friday (Oct. 18) afternoon and last through Sunday morning (Oct. 20).
鈥淩ainfall totals are forecast to reach 40 to 70 mm in general and up to 100 mm along the coastal mountains,鈥� the statement reads. 

Environment Canada warns of water pooling on the roads, swollen rivers and creeks, increased risk of washouts, rockfall, and landslides, and power outages possible from tree damage due to winds
 
鈥淎head of the storm, ensure that drains are clear of leaves and debris and secure loose objects,鈥� the statement reads. 

Residents are encouraged to monitor alerts and forecasts issued by Environment Canada.