Dean drifted Motion to the northwest , weakening Cause_change_of_strength into a remnant low which dissipated Dispersal uneventfully over the southwestern United States .

After uneventfully crossing Motion_directional the Atlantic Ocean , the system developed Coming_to_be a well-defined circulation while in the Caribbean Sea on September 20 and was then classified Check as a tropical depression .

Amelia developed Cause_to_make_progress from a tropical wave that moved Motion through the Atlantic Ocean uneventfully .