CHENNAI: The Regional Meteorological Centre (RMC), Chennai, has forecast thunderstorms accompanied by moderate rainfall in isolated places across Tamil Nadu, Puducherry, and Karaikal on Wednesday.
In its latest advisory, the weather office said atmospheric circulation is active over parts of South India and the northern Andaman Sea, setting the stage for changing weather conditions.
According to the RMC, a low-pressure system is likely to form over the central Bay of Bengal on Wednesday due to an existing cyclonic circulation over the northern Andaman Sea.
This system is likely to move west-northwestwards and intensify into a well-marked low-pressure area by October 2 over the central and adjoining northwest Bay of Bengal.
Meteorologists further expect the system to continue its trajectory towards the southern Odisha and northern Andhra Pradesh coasts, making landfall around October 3.
For Chennai, the sky is forecast to remain partly cloudy through the day. Some areas of the city are likely to experience light to moderate rain with thunder and lightning. The maximum temperature is expected to hover between 34 degrees Celsius and 35 degrees Celsius, while the minimum temperature will likely remain around 26 degrees to 27 degrees.