Maybe because they didn't produce as much as you think. It's easy to pull historic storms and get their patterns and say this is when it snows but if you aren't looking at the times it didn't you are biasing the resultsThat's why I say things don't work out like they used to. We see patterns that used to pretty much guarantee us snow here but for some reason now they don't produce nearly as often as those same great patterns did before. It doesn't matter how good the pattern supposedly is if it doesn't produce a good snow storm for most folks that used to get one out of the same pattern in the past.