Chennai weather: Tiruvarur, 3 more districts of Tamil Nadu on IMD's orange alert for heavy rains; full forecast here

The India Meteorological Department (IMD) in its weather bulletin warned of deep depression over southwest Bay of Bengal. The weather agency issued an orange alert for heavy rainfall in Tiruvarur, Nagapattinam, Mayiladuthurai and Cuddalore districts of Tamil Nadu, Puducherry and Karaikal area.

The prevailing weather system is expected to bring heavy to very rainfall at isolated places over Tamil Nadu on 10 January and heavy rainfall at isolated places over the same region on 11 January, IMD said.

The Meteorological Department also issued a yellow alert for Chennai, Chengalpattu, Tiruvallur, Kancheepuram, Villupuram, Kallakurichi, Ariyalur, Thanjavur, Pudukkottai and Ramanathapuram districts of Tamil Nadu. Moreover, IMD's yellow alert for thunderstorm and lightning is in place today over Tamil Nadu, Puducherry and Karaikal area.

As per the latest location of the deep depression, it lay centred near “latitude 8.5°N and longitude 82.2°E, about 100 km north-northeast of Batticaloa (Sri Lanka),100 km east of Trincomalee (Sri Lanka), 180 km north-northeast of Pottuvil (Sri Lanka), 370 km southeast of Karaikal (Puducherry) and 550 km south-southeast of Chennai (Tamil Nadu).”

Strong surface wind of around 35-45 kmph is likely over Coastal Tamil Nadu, Puducherry and Karaikal area under the influence of the current atmospheric conditions.