Captain Bob: "Tail wind, Slick Wet Runway, Max Landing Weight, High Ref Speed. I am thinking a bad bad case of Hydroplaning."
"Max Landing Weight" would be unlikely for a 90 minutes flight. Unless there was a mechanical failure, there is no reason for a B737 to run off the 8900+ feet pavement. Larger, heavier wide bodies have landed on that "wet, slick, non grooved" pavement for decades. Practical reality suggests that the crew had touched down too far, and perhaps too fast, on the runway.
