The Indian Metereological Department has forecast that a cyclone storm is likely to form in the Arabian Sea off Thiruvananthapuram in the next three days.
In a bulletin, it said that the depression over Maldives-Comorin areas has moved northwestwards and lay centered at 8.30 a.m. on Wednesday about 450 km north-northeast of Male (Maldives), 200 km east-southeast of Minicoy (Lakshadweep), 380 km southeast of Kavaratti (Lakshadweep) and 220 km west-southwest of Thiruvananthapuram.
It is likely to move northwestwards across Lakshadweep Islands and intensify into a depression during next 24 hours and into a cyclonic storm during the subsequent 48 hours. Under its influence, heavy to very heavy rainfall is likely over Lakshadweep during next two days and heavy to very heavy rainfall over Kerala and Tamil Nadu .
The regional centre in Chennai forecast heavy rains over southern Tamil Nadu, particularly in Kanyakumari, Tirunelveli, Thoothukudi and Ramanathapuram. Heavy rains were also likely in Coimbatore, Nilgiris as well as the Cauvery delta region, it said.
It forecast heavy rains at isolated places over Tamil Nadu and Puducherry on Thursday. Fishermen have been advised to stay off the Bay of Bengal off Kanyakumari and the Arabian Sea for the next two days.