as orlando. of the more than 4,000 flights cancelled this misery map from flightaware shows boston, new york city, and d.c. airports are among the hardest hit. laguardia and jfk airports suspending service, then closing entirely for most of the day. sebastian reed, stranded at laguardia, after trying to pick up a friend whose flight never arrived. >> it's a nightmare. >> reporter: baltimore-washington airport receiving so many diverted flights it stopped accepting international diversions. forcing already-diverted planes to land at nearby d.c. airports. railways ar affected, too. amtrak reducing the number of trains operating up and down the northeast corridor. this train derailed overnight in georgia with 300 passengers on board. >> we were trying to pull up normally, but the switch was frozen. >> reporter: fortunately, no one was injured. >> extremely fortunate on that front. linsey davis with us live from laguardia.