I'm also not sure that the probabilities support the watch yet. Someone correct me if I'm wrong ( i feel like we talk about this all the time, but i can never remember), but. i think the criteria for watch/warning is 7in over 12 hours or 9in over 24.
I think we are more in the advisory range and those don't get issued until 36 hours at the earliest. Im not 100% sure though.
WPC probabilities show the chance is there, but not super high probabilities either.