An atmospheric lower-level circulation prevails from south coastal Andhra Pradesh to north Sri Lanka via coastal Tamil Nadu. Also, an upper-level circulation prevails over south India. Due to this, heavy rain is likely to occur at one or two places in Krishnagiri, Dharmapuri, Tirupattur, Vellore, Ranipet, Kanchipuram, Chengalpattu, Tiruvannamalai, Villupuram, Kallakurichi, Cuddalore, Ariyalur, Mayiladuthurai, Tiruvarur, Nagapattinam districts and in Puducherry and Karaikal areas, the Meteorological Department said.
