We'll, I'm smack dab right in the middle of it right now. My 9 pm AS flight was delayed 60+ minutes, so I switched to the 8 pm that's currently showing 8:30 (and I'm on board). I kept an eye on the flight board today and it was better than a classic SFO winter weather day. FR24 says 54 cancelled flights today (6 yesterday!?) With ~250 delayed flights thus far.