By December 8 morning, the low-pressure area that has developed over the southern Andaman Sea is very likely to become a cyclonic storm and approach the southwest Bay of Bengal near northern Tamil Nadu, Puducherry, and the nearby south Andhra Pradesh coast.
At 5.30 am on Monday, a low-pressure area developed over the south Andaman Sea as a result of the cyclonic circulation over that area and the adjacent equatorial Indian Ocean-Strait of Malacca.
The associated cyclonic circulation reaches the middle of the troposphere. By December 6 evening, it is forecast to move west-northwestward and consolidate into a depression over the Southeast Bay of Bengal.
On December 5, a low-pressure area is expected to form over the southeast Bay of Bengal and the nearby South Andaman Sea, according to the Indian Meteorological Department (IMD). By the morning of December 7, the low-pressure system could move west-northwestward and consolidate into a depression over the Southeast Bay of Bengal.
Beginning on the evening of December 7, the weather system may bring rain to seven districts of Tamil Nadu, Puducherry, Karaikal, and the southern coast of Andhra Pradesh. The rain is likely to get heavier the following day. From December 4 to 6, widespread light to moderate rain is also anticipated over the Andaman and Nicobar islands.
Until December 8, the IMD urged fishermen to stay away from the Bay of Bengal and the Andaman Sea. The coasts of Tamil Nadu, Puducherry, south Andhra Pradesh, and the Gulf of Mannar should also be avoided from December 7 to December 9.
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