You can get the latest official forecast—and plots of the global forecast models used by the National Hurricane Center—at the Tropical Update Page.
Right now, most of the forecasts have the storm just south of Jamaica by Wednesday of next week. After that, the models agree that the storm will be picked up by the trough currently off the East Coast.
We’ve been extraordinarily fortunate this year. Tomas is the 20th named storm of the season, but we haven’t had a single major storm make landfall in the continental US.