Tropical Depression # 4 ATCF
This model is called the ATCF which is the Automated Tropical Cyclone Forecast system. I get this information through a premium service through Accuweather. It provides tracks for tropical low pressure systems (as named by the National Hurricane Center) from up to 50 computer forecast models at the same time. You'll notice how wide the target is across the entire swath of the Virgin Islands.
Also, an area of disturbance moving into the Gulf of Mexico is likely to form into a depression tomorrow
