At least they advise small crafts to remain in port.

Seriously, though... I suspect the residents know the weather report without having to rely on that website. If they don't, God help them.

Edit: Yes, I was also able to get a Cancun radar site up, different than the ones posted, which shows that same image I think.

It's significant that the NHC 11pm discussion specifically mentions that they were unable to obtain the data from the aircraft in real time - again. So the 160mph winds at the 11pm advisory are considered a conservative estimate based upon data that was available. In another words - the monster is probably even stronger than reported. Given this, I would not be surprised if winds were upped at 2am, assuming Dean remains offshore at the time (don't know when it's actually going to cross the coast).