A low-pressure area currently hovering over the Southwest Bay of Bengal is expected to bring significant rainfall to the eastern coast of India in the coming days. Chances of light to moderate rain with a few heavy spells over coastal Tamil Nadu and the south coast of Andhra Pradesh on December 17 and 18. This is due to the westward movement of the low-pressure area towards the Tamil Nadu coast.
Furthermore, the system is likely to continue moving along the east coast, gradually intensifying rainfall over coastal Andhra Pradesh and Odisha between December 18 and 20. Light to moderate rainfall is also expected to occur over Gangetic West Bengal, interior Odisha, southeast Jharkhand, south Chhattisgarh, and eastern parts of Telangana on December 19 and 20.
While minimum temperatures are expected to increase slightly over these regions in the next 2-3 days, daytime temperatures are likely to witness a slight dip. This low-pressure system is anticipated to be the last significant weather disturbance in the Bay of Bengal for the month of December. The heavy rainfall predicted over the south coast of Andhra Pradesh and coastal areas of Tamil Nadu may lead to waterlogging and potential flash floods in the next 24-48 hours.