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Chennai, Oct 21 (IANS) The Regional Meteorological Center (RMC) in Chennai has issued an orange alert for heavy to very heavy rainfall in several districts of Tamil Nadu, including Chennai, as a low pressure system is expected to form over the southeast Bay of Bengal between October 21 and 24.
According to the RMC, a low pressure area currently lies over the southeast Arabian Sea, while an upper air circulation lies over the southern Andaman Sea and adjoining southeast Bay of Bengal.
The system is likely to intensify into a low pressure area within the next 24 hours and move west-northwestwards, strengthening further over southwest and west-central Bay of Bengal during the next 48 hours.
As a result, the weather office has issued an orange alert for seven districts – Ramanathapuram, Pudukkottai, Mayiladuthurai, Nagapattinam, Tiruvarur, Thanjavur and Cuddalore – warning of extremely heavy rainfall. On Monday (21 October).
Additionally, heavy rainfall is expected over Kanniyakumari, Tirunelveli, Thoothukudi, Villupuram, Chengalpattu, Tiruvallur, Chennai, Kanchipuram, Ariyalur, Perambalur and Sivagangai districts during the same period.
For October 22, the RMC has extended orange alert in Tiruvallur, Chennai, Chengalpattu, Kanchipuram, Villupuram, Ranipet and Tiruvannamalai districts, while predicting heavy rain in Krishnagiri, Dharmapuri, Villupuram, Tiruvannamalai and Tirupattur districts. The forecast for October 23 warns of very heavy rainfall in Tiruvallur, Chennai, Chengalpattu, Kanchipuram, Ranipet and Vellore, while Krishnagiri, Dharmapuri, Villupuram, Tiruvannamalai and Tirupattur may receive heavy rainfall.
There is a possibility of intense rainfall in districts including Tirupattur, Vellore, Krishnagiri, Chennai, Tiruvallur, Kanchipuram, Ranipet, Tiruvannamalai, Erode, Nilgiris, Coimbatore, Dharmapuri and Krishnagiri till October 24.
The RMC said the sky in Chennai will be generally cloudy and there is a possibility of moderate to heavy rain with thunderstorm in many parts of the city.
Authorities have urged residents of low-lying areas to remain alert and avoid waterlogged areas, as incessant rains may cause flooding in parts of northern Tamil Nadu and the delta region in the coming days.
–IANS
AL/DPB