It's not likely that BOS
will reopen tonight. They were using follow-me vehicles to guide the aircraft into their gates, but had to stop, as the follow-me's couldn't see. Most of the taxiways haven't been plowed either.
The good news is, it's been so bad at BOS
today, that most flights haven't taken off. The only one that I believe has been diverted is BA239 to Dulles.