For me, definitely.
I was in early labor for weeks with dd1, dilated to 3 and 100% effaced with an engaged baby for weeks before "active" labor set in. I finally went into active labor the evening of 40+4, my water broke at 10cm, and I delievered after a 12 hour labor with an hour spent pushing.
With ds2 I had been checked the same day I had him and was at 1 cm (normal for subsequent children) and 0% effaced with a posterior cervix and a floating baby. Well at 6:30 pm my water broke, contractions were IMMEDIATE 2 minutes apart, I arived at the hospital 30 min after it broke and I was at 7cm I delivered naturally an hour later after 2 pushes at 38+6; with hardly any time for my family to be notified.
I was even up and walking around that evening it was totally unexpected givin my daughters arrival..