The best tropical storm coverage I have found can be found on www.intellicast.com in their tropical section. Their maps and projections are some of the most accurate (and easy to understand and visualize) that I have found.
In addition to their website, we have a direct link to their tropical Atlantic map on our website's Weather section.
Also, in addition to DR1's coverage, we provide a live Hurricane Forum for coverage of Samana Peninsula emergency news and information during these periods of intense weather activity.