renee marsh inside reagan national. renee, how many cancellations, how many delays are you seeing? >> reporter: if you're traveling, you don't want to hear this number. it's inching towards 3,000 at this hour. but to put this all in perspective on an average day, we see about 200 flight cancellations. so we are well above that. the airports that are really being hit the hardest, we're talking about philadelphia, new york area, where we just saw zain. also the d.c. area airports, they're getting hit as well. i can tell you that there's already some accumulation on the tarmac here at dca. we went down into their operations center a short time ago where they are paying attention to everything. we're talking about the temperature. we're talking about what is the temperature of the ground at this point. they're looking at every single detail, because if they need to, they need to get out there and start treating the runways. take a listen to some of the folks who are working 24/7 in the operations center here at