VANCOUVER -- Another rainfall warning has been issued for Metro Vancouver, just two days after torrential rains caused flooding and evacuations in the District of North Vancouver.

The expected rainfall isn't nearly as much as what came down earlier in the week, but Environment Canada says up to 40 millimetres are expected on Thursday as a low pressure system moves across the region.

The agency warns that heavy downpours can cause flash floods, water pooling and possible washouts near rivers, creeks and culverts.

Early Tuesday morning, creeks overflowed onto streets, flooding some houses and schools as up to 86 millimetres of rain battered parts of the North Shore.

Environment Canada says the current low pressure system is also expected to bring winds of up to 90 kilometres an hour to southern Vancouver Island.

The system is expected to ease by the evening and move inland.