With the cyclonic storm brewing over the Bay of Bengal predicted to move towards the Tamil Nadu coast, heavy downpour is likely to continue over the coastal areas of the State till Sunday (December 1,

Heavy to very heavy rain is likely to occur at isolated places in Chennai, Tiruvallur, Kancheepuram, Chengalpattu, Villupuram, Ariyalur, Thanjavur, Tiruvarur, Nagapattinam and Pudukkottai districts.

Rain lashed parts of Tamil Nadu’s Nagapattinam as deep depression forms over southwest Bay of Bengal on November 27. District administration announced holiday for schools and colleges in several regions in view of continuous rainfall.

According to the IMD, the depression is very likely to continue to move north-northwestwards and intensify further into a cyclonic storm

If the deep depression intensifies into a cyclone, it will be named as Fengal, according to the rules of the World Meteorological Organisation (WMO) on naming cyclones.

With northeast monsoon season's first cyclone likely to form over the Bay of Bengal on Wednesday, IMD has upgraded its rain alert for Chennai.

The Regional Meteorological Centre, Chennai said the depression over southwest Bay of Bengal has now intensified into a deep depression, and that it may intensify further into cyclone Fengal on November 27,

The deep depression lay about 310 km southeast of Trincomalee, 590 km south-southeast of Nagappattinam, 710 km south-southeast of Puducherry and 800 km south-southeast of Chennai

A deep depression in the Bay of Bengal is intensifying and expected to become a cyclonic storm, named Fengal, by November 27. It's currently southeast of Trincomalee, Sri Lanka, and moving towards the Tamil Nadu coast.

Moving north-northwestwards at 12 km/h, the storm system is expected to bypass Sri Lanka’s coast and approach Tamil Nadu within the next two days. However, slightly cooler sea surface temperatures closer to the coastline could weaken the system marginally before landfall.