Complex sentence: On September 6, a Monsoonal trough quickly spawned an Embedded depression that became a tropical storm on September 9.However,due to the Fujiwhara effect, the much stronger system, Typhoon Saomai dragged Bopha approximately 1,5500 kilometers south, weakened Bopha from September 9--11.
Split into simpler sentences: On September 6, a Monsoonal trough quickly spawned an Embedded depression that became a tropical storm on September 9. However, due to the Fujiwhara effect, the much stronger system, Typhoon Saomai dragged Bopha approximately 1,5500 kilometers south, and weakened Bopha from September 9--11.