If you have PreCheck or SkyPriority you seem to be good. Those lines were non-existent this afternoon again. The normal line at the north checkpoint was quite long though.
At about 10:30 this morning, it took me about 40 minutes to get through South PreCheck.
The big displays indicated that both North and South PreCheck were open.
Despite the line checkers and a bunch of TSA employees standing around the lines, I noticed one woman being sent from PreCheck to SkyPriority while two guys who tried to enter through the employee chute were sent back to the start of the normal line.