The state governments of Tamil Nadu, Puducherry, and Andhra Pradesh have deployed the frontliners as the shores of three states are preparing for the landfall of Cyclone Mandous, which has been predicted to get intensified during the evening hours of Wednesday- December 7. 

Earlier, the India Meteorological Department (IMD) said that the deep depression lies over the southeast Bay of Bengal, about 770 km east-southeast of Karaikal and about 830 km southeast of Chennai as of 5.30 am on Wednesday. The cyclonic storm is expected to reach the southwest Bay of Bengal off north Tamil Nadu-Puducherry and adjoining south Andhra Pradesh coasts during the morning hours of Thursday. 

The storm will continue to move towards these coasts and is expected to make a landfall on Thursday during which the coastal Andhra Pradesh and most parts of Tamil Nadu and Puducherry will receive heavy rainfall. The IMD had predicted heavy rains in Tamil Nadu and Puducherry from December 8 to 10. On December 8, heavy to very heavy rain will occur at isolated places over Tiruvallur, Chengalpattu, Chennai, Cuddalore, Villupuram, Mayiladuthurai and Nagapattinam districts of Tamil Nadu. 

On the other hand, the districts of Ranipet, Kancheepuram, Kallakurichi, Tiruvannamalai, Perambalur, Ariyalur, Pudukkottai, Trichy, Thanjavur, Tiruvarur, Sivanganga, and Ramanathapuram will receive heavy rain on December 8. The next day, on December 9, the districts of Tiruvallur, Chennai, Ranipet, Kancheepuram, Tiruvannamalai, Chengalpattu, Villupuram, Kallakurichi, Cuddalore, Perambalur, Ariyalur, Thanjavur, Tiruvarur, Mayiladuthurai, and Nagapattinam will receive heavy to very heavy rain. 

While some of these districts would likely receive extremely heavy rain, the districts of Vellore, Krishnagiri, Tirupattur, Dharmapuri, Salem, Namakkal, Trichy, Karur, Pudukkottai, Sivaganga, and Ramanathapuram will receive heavy rainfall. The trend at these districts will remain intact on December 10 after which the rainfall will subside. As Cyclone Mandous is getting close, the states are making preparations to carry out the relief works and evacuate the people from the vulnerable areas. 

In Tamil Nadu, six teams of National Disaster Response Force (NDRF) stationed in Arakkonam have been deployed to Chennai, Cuddalore, Nagapattinam, Thanjavur, Tiruvarur, and Mayiladuthurai. A cyclone warning signal 1 has been issued to nine ports and Orange alert has been issued for Tamil Nadu. A similar scale of preparations has been deployed in Andhra Pradesh and Puducherry. The disaster management departments in these states have kept the security apparatus ready along with the frontliners.