Due to a low pressure region that is expected to strengthen into a depression, the India Meteorological Department (IMD) on Wednesday predicted predicts severe to very heavy rainfall for Tamil Nadu and neighbouring areas.

On Monday evening, a low pressure area formed over southeast Bay of Bengal (BoB) and neighbouring areas of south Andaman Sea & Equatorial Indian Ocean (EIO) and moved west-northwestwards, eventually settling over central parts of south BoB and surrounding EIO about 8.30 a.m. on Wednesday.

"During the next 24 hours, it is likely to become a well-defined low-pressure system, which will then concentrate into a depression. During the following 24 hours, it is quite likely to move west-northwestwards towards the Sri Lankan coast, and then northwards towards the Tamil Nadu coast "According to the IMD bulletin.

Over Tamil Nadu, Puducherry, and Karaikal, light to moderate rainfall, thundershowers, and isolated heavy to very heavy rainfall is very possible from March 3to 5 (Thursday, Friday and Saturday), with extremely severe rainfall in isolated locations on March 4.

On March 4 and 5, light to moderate rainfall, thunder showers, and isolated heavy rains are all likely throughout south coastal Andhra Pradesh and Rayalaseema.

Since Wednesday morning, sea conditions have been rough over the South Bay of Bengal and adjoining Equatorial Indian Ocean, Gulf of Mannar, and Comorin area. From March 3 to 5, sea conditions are expected to worsen over the southwest and adjoining westcentral Bay of Bengal, as well as along and off the coasts of Tamil Nadu, Puducherry, and south Andhra Pradesh.

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Rains likely to hit in Southern, interior districts of Tamil Nadu till Monday