A healthy tropical wave and associated surface low that rolled into the far eastern Atlantic a few days ago has acquired sufficient organized convection tonight to be classified a tropical depression.

FOUR is expected to become Tropical Storm Dorian, and it is likely to continue moving in a general west-northwest motion for the next few days. After that, models begin diverging some more, but not altogether significantly.

This is where to put mid to long range forecasts on TD4's potential for further development and forecast track. TD4-related longer range model output discussions are also appropriate here.