It turned to the northwest and weakened on August 20 .
The mid-level circulation maintained integrity as it crossed Mexico , and led to the formation of a tropical disturbance after entering the Gulf of California on August 18 .
Mexico turned to the northwest and weakened on August 20 .
The mid-level circulation maintained integrity as it crossed Mexico , and led to the formation of a tropical disturbance after entering the Gulf of California on August 18 .