Same at DCA. My 20:06 ATL flight started rolling delays due to crew and I preemptively booked a hotel because YOU KNOW, I rebooked at the club for tomorrow afternoon and sure enough, my original cxld while waiting for a ride to the hotel. My partner's SDF also cxld. He's on stby for the 0800-ish but it's iffy.
DCA is a mess tonight and it looks like delays and cancellations are continuing for early tomorrow. I'm on a 17:24 flight and the snow will be well over by then. DCA E club staff were SUPER helpful and holding up under the stress. A lot of people are not getting anywhere tonight.