The Andaman and Nicobar Islands is a union territory of India consisting of 571 islands. It is located in the Indian Ocean, in the southern reaches of the Bay of Bengal, nearer to Indonesia and Thailand.

It comprises two island groups, the Andaman Islands (partly) and the Nicobar Islands, separated by the 150 km wide Ten Degree Channel (on the 10°N parallel), with the Andaman islands to the north of this latitude, and the Nicobar islands to the south.

One of the oldest IMD Observatories, MC Port Blair, provides meteorological services in the strategic and remote location of the Union Territory of Andaman and Nicobar Islands since 1868. MO Port Blair is situated in the capital of A & N islands, Port Blair, South Andaman District.

Meteorological Centre Port Blair issues the following products for the districts of A & N islands:
(1) District wise Weather Warning
(2) District wise Weather Forecast
(3) Fisherman and Port Warning