So I'll be keeping my fingers crossed and hoping I can travel by subway (above-ground in Brooklyn) on Wednesday morning.
Wednesday morning won't be a problem for ya, SV. The accumulating snow won't start to pile up until after the morning rush. Depending on what time you come home might be a factor.
I remember worrying about getting home on days when we had heavy snow (when I lived in Brooklyn). The trains sometimes could not make the grade after Newkirk Avenue. I'd have to take the MacDonald Avenue train.