 Early on October 20, the system was classified as a depression and given the name BOB 04; and at that time, the system was situated roughly 250 km (155 mi) southwest of Sittwe, Myanmar.Continued development took place as convection consolidated around the system and banding features formed along the western side of the low.As the depression was situated in an area of weak wind shear, further development was anticipated over the following days.