impact?

Nasty day in the Southeast today.  How badly is US affected?  I know there were many "pre cancellations" today and continuing tomorrow.   Were a lot of Express flights "sacrificed" to protect Mainline?   http://www.flightstats.com/go/Airport/currentAirportDelays.do        

The storm system given the silly name "Boreas" by the otherwise good folks at the Weather Channel is getting top billing on TV.  Looking at flightaware,com, it doesn't seem that bad.  Yet.   I am glad that I am not behind - or in front of - an airport ticket counter today.  Good luck to those...