Cyclonic Storm Yaas ( ) is a currently strengthening tropical cyclone in the Bay of Bengal. The third depression, second deep depression, and second cyclonic storm of the 2021 North Indian Ocean cyclone season, Yaas formed from a disturbance that the Indian Meteorological Department first monitored on May 23. Conditions in the basin favored development as the system became a deep depression by that day before intensifying to a cyclonic storm on the next day, being named "Yaas".