Vancouver Is Awesome. "A supermoon is a full or new moon that occurs when the Moon is closest to Earth, causing it to appear slightly larger in the sky," Rosanna Tilbrook, an astronomer at the H.R. Civic and transport authorities are coordinating field operations to improve commuter safety, reduce transit bottlenecks, and streamline daily travel across key urban corridors. Commuters have been advised to check updated schedules and route advisories.