Cyclone Nada has weakened into a depression in the Bay of Bengal and made landfall between Nagapattinam and Vedaranyam in Tamil Nadu.
According to the Met department, rain up to 4 cm is expected in Cuddalore, Puducherry and Nagapattinam while Chennai will receive moderate rainfall.
"A large chunk of the depression has crossed coast early morning. However, over 25 percent of the system is yet to make the land fall which will happen soon," a MeT official here said.
He said mild to moderate rain coupled with squally winds were being witnessed in parts of Tamil Nadu.
Cyclone Nada which weakened into a deep depression yesterday moved Westnorth-West wards and became a depression about 40 km East south East of Karaikkal (Puducherry Union Territory), the official said.
Meanwhile, top government authorities said the situation is being monitored continuously.
A team of the National Disaster Response Force (NDRF) has reached Karaikal.
"We've also got ready many schools as temporary relief centres," said Deputy Collector Kesavan.
NDRF teams have been posted in Cuddalore, which is about 20 km away from Puducherry.
With PTI Inputs