Heavy Rain to Lash Tamil Nadu and Chennai; Low-Pressure System May Weaken, Cyclone Risk Low
Tamil Nadu, including Chennai, is expected to face heavy rainfall on October 23, 2025. IMD forecasts thunderstorms and lightning; low-pressure system over Bay of Bengal likely to weaken.
Heavy Rain in Tamil Nadu and Chennai Today: Low-Pressure System to Weaken
The ongoing northeast monsoon is going to make Tamil Nadu a rainy paradise. IMD has predicted heavy rains in several places including Chennai, Tiruvallur, Kanchipuram, Chengalpattu, and Ranipet on October 23, Thursday.
Rain Forecast
Besides Chengalpattu, Chennai, Kanchipuram, Kanyakumari, Tenkasi, The Nilgiris, Thiruvallur, Thoothukkudi, and Tirunelveli expect light to moderate rains, Thunderstorms and lightning will accompany the rain. Rain is also likely in the nearby areas of Puducherry and Karaikal.
Because of the torrential rains, some districts have been given the orders to close schools and colleges. There hasn't been an official announcement regarding closures in Chennai though. The residents are being urged to get the local advisories.
Power and Traffic Alerts
Rain is continuous, and power cuts may occur in many parts of Chennai and other districts. The commuters should be careful because there might be waterlogging and interruptions in traffic in the low-lying areas.
Low-Pressure System Update
The heavy rains in Tamil Nadu and Puducherry are attributed to the low-pressure area that is clearly marked over the southwest Bay of Bengal. This system which had moved northwest from off the north coast of Sri Lanka was situated about the Tamil Nadu coast on Wednesday morning. IMD is predicting this system to lose its strength in the next 24 hours.
According to the IMD, “The well-marked low-pressure area over the southwest Bay of Bengal off the Tamil Nadu coast moved northwestwards across north Tamil Nadu, Puducherry, and south Andhra Pradesh coasts and lay over the north coastal Tamil Nadu and neighborhood at 1730 hrs IST on 22 October 2025.”
The low-pressure system will continue to move west-northwest and then gradually dissipate into a normal low-pressure area over north Tamil Nadu and south Andhra Pradesh within 24 hours.
Depression Over Arabian Sea
On the other hand, the depression over the southeast Arabian Sea is proceeding northwards at the speed of 7 kmph. By October 22, it was located 620 km west-southwest from Aminidivi (Lakshadweep) and 980 km southwest from Panjim (Goa). According to the IMD, it will first head north and then change its course to north-northeast during the next 24 hours.
The people living in the districts that are prone to the mentioned storms are advised to keep an eye on the weather updates closely, to avoid traveling without a reason, and to follow the local authorities' safety measures.
