Tamil Nadu, Andhra Pradesh and Puducherry are set for more torrential rains as cyclone Ditwah is moving towards the Indian coast, the chief of the India Meteorological Department (IMD) said today. The weather department has also sounded a red alert for these regions.. According to the latest update by the IMD, the cyclone is likely to reach over the southwest Bay of Bengal near North Tamil Nadu, Puducherry and adjoining south Andhra Pradesh coasts by early Sunday morning.