There's a particularly nasty band just about to hit Vieques east of PR, some of the recon winds found may be putting it into hurricane category fairly soon. With it crossing Puerto Rico like it looks like it will, it will put most of the island on the stronger part of the storm, so any strengthening bursts as it crosses will be felt in parts around the island. Recon has indicated that the storm has moved due west over the past two hours.

The NHC is doing a good job keeping it conservative, I just don't see any reason to send out too many alarms yet for the US other than watch it closely, especially if this system crosses over Hispaniola. Although media hype may kick up once Irene gets called a hurricane. (Later tonight or early tomorrow AM) As far as Irene and Hispaniola it likely won't be destroyed like Emily, but it will still get weakened quite a bit. For those in PR, and the Dominican Republic, though, stay safe.