CHENNAI: The Tamil Nadu government has directed district administrations to strengthen preparedness and issued heavy to very heavy rainfall warnings for several districts as Cyclone Murasu moves towards the south Andhra Pradesh coast.

The Tamil Nadu Disaster Risk Reduction Agency (TNDRRA) said the storm was over the Bay of Bengal, 480 km east-southeast of Chennai, moving west-northwestwards. It is expected to intensify into a severe cyclonic storm by Monday morning and cross the Andhra Pradesh coast between Nellore and Narsapuram between Monday night and early Tuesday.

Although landfall is forecast in Andhra Pradesh, northern Tamil Nadu is likely to receive heavy rain.

The Regional Meteorological Centre (RMC), Chennai, has forecast heavy to very heavy rain at isolated places in Tiruvallur on Sunday. Chennai, Chengalpattu, Kancheepuram, Ranipet and the Nilgiris are likely to receive heavy rain.

Winds along the northern Tamil Nadu and Puducherry coasts could reach 60-70 kmph, with gusts up to 80 kmph, from Monday evening to Tuesday morning. The sea is expected to remain very rough, with waves of four to six metres and reduced visibility, until Wednesday morning.

Fishermen have been advised not to venture into the sea until November 4 morning. Those fishing in deep waters have been asked to return immediately to the harbour or coast.

The Commissionerate of Revenue Administration and Disaster Management has directed district collectors to follow disaster-management procedures, mobilise district machinery and take preparedness measures. They must report untoward incidents promptly.

Residents have been advised to avoid beaches and coastal roads, waterlogged underpasses and fallen power lines, and follow weather updates.