NOAA misjudged the center of the Low. The position given went from 17.1N to 21.1N in 4 hours. This is not possible....the low either shifted or was just misjudged, which is not uncommon. The Low (96L) is now North of the island (CZM-20.29), but there is still a lot of convection to the South and East which should affect the island as the storm is passing to the NNW. A couple of days of rain should be the extent of it.
I like Stormpulse's mapping system, but the site was highly inaccurate with TS Alex as it had the storm's location several hundred miles off from all other weather sites during most of the storms run. For accuracy in location and direction I like using the printed coordinates. Tracking models are very rarely close when any given storm is more than 2 days away. It is not uncommon to see model storm tracks change by hundreds of miles with every new model run. NOAA states that storm track predicitions of a storm more than 3 days out have only a 30% accuracy rate.