The Wunder Maps provided by Weather Underground are an excellent way to track these small wobbles as those maps allow you to overlay the satellite data on top of a Google Map view with NHC forecast positions shown. The only thing missing are LAT / LON lines for reference but with the NHC position markers you can see if Irene is on target or not.

41 mph gust at George Town, Bahamas where the pressure is 29.46 and dropping fast with Irene now 80 miles away. This location is just on the outside the "red" on Rainbow IR image indicating the core of the storm. Its always amazing to see how closely the wind speeds follow the pressure as a hurricane approaches.

While a Cat 3 Irene still has a small wind field. Hurricane force winds only extending out 50 miles. Compare this with Wilma (also Cat 3) at landfall in SW FL which had a 90 mile radius of hurricane force winds. At that point Wilma's wind field basically covered the southern half of FL from the Big O to the upper keys (all of Dade, Broward and Palm Beach County) with 75 mph + winds.