The India Meteorological Department (IMD) has issued a warning for very heavy rainfall in 17 districts of Tamil Nadu on Thursday, October 22, as the northeast monsoon intensifies across the state. Heavy rain is expected in several other districts and thunderstorms and strong winds are also expected in different areas.
The warning comes as a low-pressure area has started to develop over the southwest Bay of Bengal off the coast of Tamil Nadu. It will bring widespread rainfall, especially in coastal and delta areas.
Residents need to follow weather updates and to keep an eye on the weather and be alert in areas where there is waterlogging from waterlogging and other rain-related problems.
List of 17 Districts Under Very Heavy Rain Alert
According to the IMD warning, the following 17 districts may experience very heavy rainfall at isolated places on October 22:
- Thoothukudi
- Tirunelveli
- Kanniyakumari
- Theni
- Tenkasi
- Ramanathapuram
- Dindigul
- Virudhunagar
- Madurai
- Coimbatore
- The Nilgiris
- Sivaganga
- Pudukkottai
- Thanjavur
- Tiruvarur
- Nagapattinam
- Mayiladuthurai
These districts cover several parts of southern Tamil Nadu, the western districts and the Cauvery delta region. Rainfall intensity may vary from one place to another and very heavy rain is not expected to affect all parts of each district equally.
Nine more districts are likely to receive heavy rain
Apart from the 17 districts under the very heavy rain warning, the IMD has forecast heavy rainfall in nine other districts.
These are Tiruchirappalli, Erode, Ariyalur, Perambalur, Cuddalore, Villupuram, Tiruppur, Karur and Namakkal.
Moderate rainfall with thunderstorms and strong winds will also occur elsewhere in Tamil Nadu. Residents should be monitoring weather conditions, especially if heavy showers take place in a short time.
Low-pressure area strengthens rainfall activity.
The new warning comes as a low-pressure area over southwest Bay of Bengal near the Tamil Nadu coast has been established. This weather system will enhance precipitation and moisture over coastal areas and inland districts.
The northeast monsoon is a major source of rainfall in Tamil Nadu and, of particular importance to Tamil Nadu during October, November and December. It brings much-needed rain to the area and can have a long-term impact on Tamil Nadu, but strong weather can also disrupt daily life in a short span of time and it can be very turbulent.
The current weather system is going to bring widespread showers and coastal and delta districts are expected to be among the areas which would experience significant rainfall. How well this system moves and develops will depend on the weather and the local conditions.
The IMD also said thunderstorms and strong winds could develop in some areas in the future. So people should monitor official forecasts for updates to rainfall warnings over the coming days.
Possible impact on traffic and daily activities.
Heavy and very strong rainfall can lead to waterlogging on roads, slower traffic flow and temporary disruption to public transport. Low-lying areas and poor drainage may be particularly susceptible to heavy rainfall in intense periods.
Motorists must drive cautiously on wet roads, stay out of the way of other cars when there is heavy rain and maintain a safe distance when driving through flooded areas when the depth of the water is unknown. Road and transport update information will be provided to people travelling between districts before travelling there and back before departure.
Residents should be on the lookout for overflowing drains, canals and other water bodies during heavy rain and should avoid overflowing drains, canals and other water bodies. Thunderstorms may bring lightning, making it safest to stay indoors when lightning activity is observed.
If the weather is predicted to be severe, people living in areas at risk should start to monitor local administration advisories and take action as soon as they can.
Residents advised to follow official weather updates.
With 17 districts under a very heavy rain warning and several others under a heavy rain alert, weather conditions in Tamil Nadu need to be closely monitored on Thursday.
The forecast of rainfall might change as the low-pressure system develops and moves. Residents should refer to the latest IMD bulletins and district administration announcements for location-specific information.
An IMD rain warning does not automatically mean schools and colleges are closed. Parents, students and employees should see the district’s official district-level announcements before changing their plans.
The northeast monsoon will remain an important factor in Tamil Nadu’s weather during this period. Residents in affected districts will have to remain alert, take basic precautions and avoid unnecessary risks during torrential rainfall.
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