As the depression has moved away from Tamil Nadu towards the coast of Andhra Pradesh, rainfall may decrease by Thursday noon.
However, parts of north and north coastal Tamil Nadu including Chennai, Tiruvallur, Villupuram and Cuddalore will receive heavy to very heavy rainfall on Thursday, said officials of the Regional Meterological Department. Parts of south Tamil Nadu like Kanyakumari, Ramanathapuram and Thoothukudi may receive isolated very heavy rainfall.
The depression that gave intense rains on Tuesday and Wednesday has moved in the northern direction and is at a distance of 130 km east and south east of Nellore and 230 km south of Machilipatnam. The system will continue to move in north and north east direction along Andhra Pradesh and may become a cyclonic storm, officials said.
Weather blogger Pradeep John said that Nannilam in Tiruvarur district recorded the highest of 14 cm on Tuesday so far this May. Last May, Kamatchipuram in Dindugul district received 20 cm of rainfall making it the highest amount recorded in 24 hours across the country that year. In 2014, lower Papanasam had received 40 cm of rainfall in a day, he said.
Meanwhile, Chennai airport recorded 12 cm in a span of 24 hours ending at 8.30 a.m. on Wednesday and 5 cm ending at 8.30 p.m.
Also, the widespread rainfall in the catchment areas has increased the water levels in reservoirs Poondi, Redhills, Cholavaram and Chembarambakkam reservoirs.
