For the city, the downpour that started on Sunday is going to continue for two more days. Before the deep depression crossed the north Tamil Nadu coast near Cuddalore late in the evening on Monday, it deluged parts of the city and gave it the year’s highest volume of rainfall in a single day.
S. R. Ramanan, director, Area Cyclone Warning Centre, said that even though the weather system crossed the coast on Monday, it will continue have an impact on the coastal areas, including Chennai, on Tuesday.
Several areas will experience light to moderate rain till Wednesday after which monsoon activity will pick up in the interior districts.
Experts note that weather systems that cross the Tamil Nadu coast during the northeast monsoon would have rain clouds up to a radius of 400 km. Y.E.A. Raj, former deputy director general of meteorology, Chennai said such weather systems would bring plenty of rain to coastal areas like Chennai even if it crossed near Nagapattinam.

Source : The Hindu