Beginning in the 1970s this was the popular term for a 'great party' in Western Canada. Its usage sprung from the enthusiastic party howls and hoots that could be heard at a distance from the many party-goers. It originated in North Delta (back when it was still unspoiled), a small, unique, adventurous, forested, geographically elevated suburban community bounded on four sides by the Fraser River, Burn's Bog, farmlands down to Boundary Bay, and the then sprawling, sparsely inhabited municipality of Surrey to the east. All ages of teenagers would end up partying together (most of them still friends decades later) on weekends in local forest clearings or in youngster's homes (when the parents went away on holidays!), and the loud, long howls of enjoyment we're the familiar signature of those memorable occasions. Those special celebrations of youthful freedom and friendship are still being enjoyed today. Rock on!
Jim's parents have gone away on holiday, so there'll be a big party at his place all weekend and everyone's going — it's gonna be a howler!