Some of the cameras show either a lot of fog or a lot of smoke. Earlier it really didn't look like fog because of how quick it was moving and it was not spread out like fog would be.
Live Webcam 1 - Reagan National Airport - Washington D.C.
Live Webcam 2 - 4K - Reagan National Airport - Washington D.C.
Live Webcam 3 - 4K - Reagan National Airport - Washington D.C.
It may not be what we're hoping it is but it is very likely there is at least a fire there
I guess we'll find out one way or another but I will be sleeping soon. It's almost 6am here lol, damn DC live cams kept me up later than I had planned.