 Accompanied by a low-level circulation center, the monitored storm complex developed rainbands about its southern periphery the following day.At 1200 UTC on December 28, Météo-France deemed the system sufficiently organized to be considered a tropical disturbance, the fourth system to be given such a classification by the agency that season.Upon its designation, the disturbance was analyzed to have an unusually high barometric pressure, based on nearby weather station observations.