Heavy rain will hit Chennai, North, Delta and Western districts on Sunday
Heavy rain is likely at isolated places over Tiruvallur, Chennai, Chengalpattu, Kancheepuram, Villupuram, Kallakurichi, Vellore, Ranipet, Tirupattur, Tiruvannamalai, Namakkal, Salem, Dharmapuri, Krishnagiri, Erode, Virudakumari, Kancheepuram district and Pushkamari | Photo credit: B. Velankanni Raj
The Regional Meteorological Center (RMC) has forecast heavy to very heavy rain at isolated places in Mayiladuthurai, Nagapattinyam, Tiruvarur, Thanjavur, Pudukkottai, Ariyalur, Perambalur, Tiruchi, Karur, Cuddalore, Nilgiris, Coimbatore, Tiruppur, Sivaganga region and Karaikal.
Isolated places in Theni, Dindigul and Madurai districts are likely to experience extremely heavy rainfall and a red alert has been issued.
Heavy rain is likely at isolated places over Tiruvallur, Chennai, Chengalpattu, Kancheepuram, Villupuram, Kallakurichi, Vellore, Ranipet, Tirupattur, Tiruvannamalai, Namakkal, Salem, Dharmapuri, Krishnagiri, Erode and Virudury.hunagar, Puchery districts.
About 80% places were experiencing rainfall over Tamil Nadu till 8:30 am on Saturday. Out of 620 stations online, 493 reported precipitation. Burliyar station recorded 25 cm which was the highest rainfall during this period.
Area of low pressure
A low pressure area (LPA) over east-central and adjoining southeast Bay of Bengal moved west-northwest and became well-marked by 8:30 am on Saturday.
It will most likely persist in the same area and intensify into a depression. It is then likely to move to the west-northwest and strengthen further into a deep depression on Sunday and a cyclonic storm by Monday morning. It will then move west-northwest, intensify further and reach near Andhra Pradesh coast around Wednesday morning.
An LPA over Southeast Arabian Sea and adjoining Lakshadweep region persisted over the same region at 8:30 am on Saturday. According to RMC sources, this has affected the rains over the Western Ghats.
Heavy to very heavy rain is likely at isolated places over Pudukkottai, Sivaganga and Ramanathapuram districts on Monday. Heavy rain is likely to occur at isolated places over Nilgiris, Coimbatore, Theni, Dindigul, Madurai, Virudhunagar, Tenkasi, Thoothukudi, Tirunelveli and Kanyakumari districts.
Heavy rain is forecast at isolated places over Ramanathapuram on Tuesday. Light rain is likely to occur at isolated places over rest of South Tamil Nadu. Light rain is likely to occur at isolated places over rest of Tamil Nadu, Puducherry and Karaikal region. Light to moderate rain is likely to occur at isolated places over South Tamil Nadu districts.
Published – 25 Oct 2026 0:33 IST