As predicted by Skymet weather, intense rain and thundershower activities have commenced over coastal areas of Tamil Nadu. During the last 24 hours, Tondi recorded 100 mm, Atiramapattinam 48 mm, Nagapattinam 54 mm, Karaikal 50 mm, Cuddalore 47 mm, and Chennai recorded light rainfall.
At present, the easterly wave is active moreover a cyclonic circulation has also formed over the south-west Bay of Bengal near Sri Lanka coast. These
weather parameters will enhance the rainfall activities over coastal areas of Tamil Nadu until December 17. On December 18 and 19 rain activities will start reducing from Northern parts of Tamil Nadu. But South coastal districts such as Nagapattinam, Thiruvarur, Pudukkottai, Sivaganga, Ramanathapuram, Thoothukudi, Nagercoil and Tirunelveli will continue to get moderate to heavy rain until December 19. Waterlogging in low lying areas, traffic jams, as well as flash floods, cannot be ruled out in these districts.
Chennai and Puducherry to get light to moderate rains until December 19. Interior districts of Tamil Nadu may also get moderate showers during this period. But the intensity will be much less than coastal areas.
This may be the last heavy spell over Tamil Nadu during Northeast Monsoon. Until December 15th, the state of Tamil Nadu was surplus by 4%. Northeast monsoon is expected to end with normal rainfall for Tamil Nadu.