Heavy rains caused by the storm in Central Vietnam ended the drought in this area, after many hot days because of the strong El Niño.

[3] At this time fragmented bands of atmospheric convection were trying to form around the system's low level circulation centre, which was located within a marginal environment for further development.

[3] Over the next couple of days the system gradually developed further, before it was classified as a tropical depression during September 13, by both the Japan Meteorological Agency and the United States Joint Typhoon Warning Center.

[9] A few hours later, the JTWC reported that according to animations, the center of Vamco had become partially exposed and wind shear inhibited further development, which favorable conditions started to fade.

[11] Vamco made landfall south of Da Nang, Vietnam,[12] and the system was last noted as it dissipated over land on September 15.

[22] Heavy rains caused by the storm in Central Vietnam ended the drought in this area, after many hot days due to the strong El Niño.