Thanks Clark, I knew about the 15 knots (which is why I didn't mention it), but not the pressure - meteorology is a constant process of learning.

As noted, the structure of Earl is getting a little better but the dry air has really put a crimp in the intensification process. I think that the key factor for the next few days centers on whether the ridge rebuilds behind Danielle before Earl can follow the weakness. I've been watching the variability between each official forecast of the latitude where Earl crosses 60W - varies from 20N to 22.5N so far. With a slow start in Earl's organization it could be close as to whether the center can get above 20N when it hits 60W if the current center location is correct.
ED