VICTORIA -- Many on Vancouver Island woke up to a rare dusting of snow Thursday morning. But Environment Canada says it’s just the beginning. A winter storm watch is in effect for much of the island, including Greater Victoria. The weather service says between 15 to 25 centimetres could fall Friday evening through Saturday morning. The area covered by the storm watch includes southern, western, inland and eastern Vancouver Island. The Comox Valley RCMP said part of the Inland Island Highway was closed Thursday morning due to "slippery conditions and motor vehicle incidents." Drivers were asked to avoid the area. Inland Island Highway closed between Cook Creek and Buckley Bay due to slippery conditions and motor vehicle incidents — avoid the area.