A deep depression in the southwest Bay of Bengal is expected to move northwest towards the north Tamil Nadu-south Andhra Pradesh coast. Chennai and surrounding districts may experience light rain today The depression in the southwest Bay of Bengal has intensified into a deep depression and has been stationary for the past 24 hours.

The latest forecast indicates that light to moderate rain is likely to occur in many parts of North Coastal Tamil Nadu.

The IMD forecasts that the system's impact will persist until December 20 with rain continuing in many parts of the Chennai.

CHENNAI: The Regional Meteorological Centre has revised the heavy to very heavy rainfall alert for Chennai and its surrounding districts for Wednesday, downgrad

Chennai and north Tamil Nadu brace for heavy monsoon rains as a low-pressure system intensifies over the Bay of Bengal. An orange alert has been issue

The rains are attributed to a low-pressure system forming over the southeast Bay of Bengal, influenced by an upper-air cyclonic circulation over the South Andaman Sea and nearby areas. This system is expected to intensify and move west-northwest towards the Tamil Nadu coast on December 18.

Pressure Area,' the weather system is expected to intensify into a 'Well marked Low-Pressure Area' and move north-northwestwards towards Tamil Nadu Coasts during the next 2 days, said the IMD.