The India Meteorological Department (IMD) issued a weather alert as a low-pressure area over the southeast Bay of Bengal and adjoining Equatorial Indian Ocean has become a well-marked low-pressure area on Tuesday. Further, the low-pressure area is expected to move west-northwestwards towards the Sri Lanka-Tamil Nadu coasts in the next 24 hours.
As a result, rainfall is predicted for the next six days.
The IMD said, "The system is very likely to continue to move west-northwestwards towards Sri-Lanka-Tamil Nadu coasts during the next 24 hours. Scattered low and medium clouds with embedded intense to very intense convection lay over south Bay of Bengal and Andaman Sea. Scattered low and medium clouds with embedded moderate to intense convection lay over central Bay of Bengal, north Andaman Sea and isolated weak to moderate convection lay over North Bay of Bengal."
Heavy Rainfall Likely In Tamil Nadu, Puducherry
The IMD has predicted heavy to very heavy rainfall in several districts on Wednesday (December 11, 2024). According to IMD, heavy to very heavy rain is expected at isolated places in Cuddalore, Mayiladuthurai, Nagapattinam, Thanjavur, Tiruvarur, Pudukkottai, and the Karaikal area. Heavy rain may also occur in isolated areas of Sivaganga, Ramanathapuram, Tiruchirappalli, Perambalur, Ariyalur, Kallakurichi, Villuppuram, Chengalpattu, Kancheepuram, Chennai, and Tiruvallur districts.
Chennai is likely to witness thunderstorms with lightning and moderate to intense rain spells in some areas.
On Thursday, December 12, 2024, light to moderate rain is likely across north Tamil Nadu, Puducherry and Karaikal, with thunderstorms and lightning in isolated areas. Heavy to very heavy rain is predicted for Thanjavur, Sivaganga, Pudukkottai, and Tiruchi districts.
The authorities have been alerted to potential disruptions due to localised flooding, particularly in low-lying regions. Fishermen are advised to avoid venturing into the Bay of Bengal until conditions improve.