The India Meteorological Department (IMD) on Thursday said that after gaining more strength, the cyclonic circulation has finally induced a low-pressure area over Equatorial Indian Ocean and the southeast Bay of Bengal. The IMD predicted heavy rain over coastal Tamil Nadu and Puducherry.
The Indian Meteorological Department also predicted that it will continue to move west-northwest and gain latitude.
"A trough of low at mean sea level lies over the Equatorial Indian Ocean and the southeast Bay of Bengal with a cyclonic circulation aloft extending up to 3.1 km above mean sea level. Under its influence, a low-pressure area is very likely to develop over the Equatorial Indian Ocean and adjoining central parts of the South Bay of Bengal to the southeast of Sri Lanka by Thursday (April 25)," the India Meteorological Department said in its advisory.
"It is very likely to intensify into a depression during the subsequent 36 hours and move northwestwards toward the Tamil Nadu coast along and off the east coast of Sri Lanka and is likely to intensify into a cyclonic storm during the subsequent 48 hours," the organisation added.
Heavy to very heavy rainfall is likely to occur at isolated places over coastal Tamil Nadu and Puducherry. Thunderstorm activity will also intensify with gusty winds (50-60 kmph) and lightning.
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