A rainfall warning is in effect for North Shore, Vancouver, Burnaby, New Westminster, and communities in the Fraser Valley.
Heavy rain with 50 mm expected is overnight.
Besides Metro Vancouver, Sunshine Coast between Gibsons and Earls Cove is also under the warning.
The rain will ease Wednesday morning to some scattered showers.
Heavy downpours can cause flash floods and water pooling on roads. If visibility is reduced while driving, turn on your lights and maintain a safe following distance.
Please continue to monitor alerts and forecasts issued by Environment Canada.