The low pressure area in South West Bay of Bengal now lies between Gulf of Mannar and adjoining areas of South Tamil Nadu and Sri Lanka.
Under its influence, rain or thundershowers would occur at many places over south Tamil Nadu, Puducherry, Kerala, south coastal Andhra Pradesh and south interior Karnataka in the next 24 to 48 hours, it said.
For Chennai city, the sky condition would be cloudy. A few spells of rain or thundershowers may occur while there may heavy rainfall in some areas during this period, it said.