Here's how Grouse Mountain brought snow-making to B.C.
https://www.nsnews.com/living/heres-how ... bc-3112468
In late January of 1970, the Vancouver Sun reported that Grouse had received only five inches of snow that month, well below its seasonal average. This low snowpack limited Grouse’s operations. The mountain’s popular ski run The Cut was open for only 10 days that year, compared with over 150 days the previous year. These poor conditions led to reduced skier traffic and a net loss of $50,000 for the company.
Grouse’s system once again proved beneficial during the “snow drought†of 1976-77. That season, B.C’s ski resorts faced unseasonably warm temperatures and historically low precipitation totals. Ski resorts across the province, including Whistler Mountain, had to temporarily close their operations. The situation was little better at Grouse. On Feb. 1, 1977, the resort measured only two centimetres of snow at its peak – its lowest snowpack in recent memory. But, Grouse remained in partial operation thanks to its snow-making system. Concentrated snow-making on the Paradise run kept it open to skiers for weekend use.
We know more recent winters like '09-10 and '14-15 were also crapfests for the mointains. At this point it looks like this one might be right up there with those and '69-70 and '76-77.