By Evan Dawson, Finger Lakes Editor Photos by Morgan Dawson Just as hailstorms and cold snaps are destructive to a vineyard, sweeping generalizations are destructive to a harvest report. This year, more than any in recent memory, it is nearly impossible to describe the Finger Lakes pre-harvest conditions in one or two declarative statements. That's because Mother Nature did some — let's just call it like it is — weird, weird stuff this year. Take the case of Hermann J. Wiemer, which utilizes three vineyards on Seneca Lake. One of them, the HJW vineyard behind the winery itself, endured a recent…