 On March 21, the system began to increase in organization, and RSMC Nadi designated the system Tropical Depression 12F late that day, noting that the potential for development into a tropical cyclone was low to moderate due to increasing wind shear to the south.The Joint Typhoon Warning Center issued a Tropical Cyclone Formation Alert on the now-quasi-stationary system the next day.RSMC Nadi upgraded the potential for development to high and began issuing advisories later in the day, but the depression soon became disorganised due to increasing shear.