Stanley Park was closed to the public and power to the park was shut off overnight Thursday after heavy snow and ice caused several trees to fall in the park, Vancouver police said Thursday.

Police said the park was closed at about 4 a.m. PT. The Stanley Park Causeway, which leads to Lion's Gate Bridge, remained open early Thursday, but Stanley Park Drive continued to be closed.

The decision to close the park was made out of concern for public safety, police said. B.C. Hydro decided after the park was closed to shut off the power to the park.

Vancouver was gripped by extreme winter conditions this week after a big snowstorm on Sunday, more snow on Wednesday and bitterly cold temperatures.

Stanley Park, on the edge of downtown Vancouver, is the third-largest urban park in North America at about 400 hectares.

The Greater Vancouver Regional District, meanwhile, said on its website that regional parks have also been affected by the recent weather, and trails, parking lots and park facilities may be closed in certain parks depending on local conditions.

"Heavy snow and ice have created significant hazards, including falling trees, falling branches and downed power lines," it reads.

"Also, there is heavy ice buildup on roads and parking lots. Visitors may encounter temporary closures of trails, parking lots or park facilities. In some cases, entire parks may be closed to public access."

The GVRD recommended that park visitors contact its parks department to find out more detailed information before heading out.

Rising temperatures were expected for Vancouver on Thursday.