CHENNAI: Light to moderate rain is likely in Tiruvallur, Tirupur, Theni and Tirunelveli districts of Tamil Nadu till 10 am, the Regional Meteorological Centre (RMC), Chennai, said in a weather update on Saturday.

The forecast was issued after a deep depression formed over the Bay of Bengal, said a Thanthi TV report. It is expected to move west-northwestwards and intensify as it progresses over the midwest and adjacent areas, said the bulletin.

Chennai and its surroundings recorded heavy rains on Friday night.