Complex sentence: Once it becomes organized, it becomes a tropical depression, formaton usually occur from south of the Gulf of Tehuantepec to south of Baja California with a more westerly location earlier in the season.
Split into simpler sentences: Once it becomes organized, it becomes a tropical depression. Formation usually occurs from south of the Gulf of Tehuantepec to south of Baja California with a more westerly location earlier in the season.