I was specifically told it wasn't weather related. I think the rep let it slip that it was the number of hours the crew was working. She then backtracked and just said "operational."
I've been an A-List Preferred Member with a Companion Pass for 3 years...so I fly Southwest a lot.
I'm taking a break from them after these ridiculously delayed and cancelled non weather-related incidents. Southwest just broke my will.
I cancelled my Southwest return flight and booked on Delta.