"While the South west monsoon has withdrawn from the remaining arts of the region, the North East Monsoon has simultaneously commenced over Tamil Nadu, Kerala and adjoining areas of Andhra Pradesh and Karnataka on October 18," a bulletin from the MeT office said here today.
Chennai received the highest rainfall of 18 cm in the last 24 hours ending at 8.30 AM today,followed by Papanasam in Tirunelveli district with 16 cm and Puducherry 16 cm, it said.
In Chennai and its neighbourhoods, the sky would be generally cloudy and there may be a few spells of rain or thundershowers in the next 24-48 hours, it said.