Complex sentence: A weak extratropical low entered the Gulf of Mexico on August 6 and drifted slowly westward before developing into a tropical storm on August 8 about south of the Mississippi River Delta.
Split into simpler sentences: A weak extratropical low entered the Gulf of Mexico on August 6 and drifted slowly westward. The system slowly organized, developing into a tropical storm on August 8 about south of the Mississippi River Delta.