I saw that someone was wondering about the map on CIMSS I linked to earlier. Basically, the arrows show the flow in the atmosphere that will steer Dean. If you look at the hump over the western tip of Cuba, that is the upper-level low we have been talking about lately. The ridge is the large dip you can see that stretches from Charleston, SC to Barbados. This is pushing Dean to the west. The main situation is that if the ridge can push Dean fast enough, causing Dean to catch the upper-level low, Dean will move more northwards, but since as of now, Dean appears to be going about the same speed as the low, it does not look like Dean will catch it and the ridge will keep pushing him off to the west.