I am looking at JFK airport right now and just below the map there is an orange box that states: John F Kennedy Intl (KJFK) is currently experiencing an airport closure. (all airport delays) (all flight cancellations).
It’s 0700Z 8/27/11 as I type this and the airport doesn’t close until 1600Z 8/27/11 (NOTAM 08/272).
The airport is open yet flightaware is stating the airport is closed.