If you're flying today, you already know that a good part of the nation's air traffic system is in a serious mess. A series of late-afternoon and early-evening thunderstorms on the East Coast has backed up flights all over the country.
The best way to assess current conditions is at FlightStats.com Use the "Airports" tab for specific airport delays information. The F.A.A. claims to have a flight-delay feature on its Web site, www.faa.gov -- but as usual it's worthless when you need it. As I write this, it's frozen.
If (as I do) you need a reminder of what "ground delay" and "ground stop" programs are, here's a link.