The system lay centred at about 1,440 km southeast of Chennai and 1,720 km southsoutheast of Machilipatnam at 1430 hrs.
"It is very likely to intensify further into a deep depression during the next 24 hours and into a cyclonic storm during subsequent 12 hours. It is very likely to move northwestwards off Sri Lanka coast during the next 96 hours and reach near north Tamil Nadu and south Andhra Pradesh coasts on April 30 evening," the IMD said in a bulletin.
Rainfall at most places with heavy falls at isolated places is likely in all three states on April 29.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)