The JMA identified a tropical depression in the open Pacific on August 5. PAGASA named this storm late on August 5 as it was forecast to enhance the southwest monsoon and bring rains to the Philippines. Around 1800 UTC, the JTWC declared that the system had developed into a tropical depression and gave it the number 10W. JMA upgraded it to Tropical Storm Bopha on August 6. The name Bopha was submitted by Cambodia and is a flower and girls' name. Around this time, the JTWC also upgraded the system to a tropical storm.