A great low pressure trough has formed over tamilnadu and it covers almost full of tamilnadu.
Take a look at the latest satellite pic...
Looking at the satellite pic you can see Chennai is going to get more, more rain thru the night.
Chennai received and receiving almost non-stop rain from Yesterday morning.
Chennai rainfall amount from 12:00 AM 19-Dec-07 to 6:30 PM 19-Dec-07 is 71.4 MM.
Important and good info is that Chennai rainfall average has crossed the normal december average. Thanks to "94B"
Take a look at the following disturbing figures, recorded 8:30 AM, 19-Dec-07
Orathanadu (Thanjavur dt) and Dharapuram (Erode dt) recorded extremely heavy rainfall of 31 and 27centimetres respectively.
Perungalur (Pudukottai dt) and Thozhudhur (Cuddalore dt) 24 each, Panruti (Cuddalore dt) and Gingee (Villupuram dt) 23 each, Natham and Palani (Both Dindigul dt) 22 each, Vanthavasi (Thiruvannamalai dt) 21, Tiruchirapalli, Thanjavur, Perundurai (Erode dt), Kadavur (Karur dt), Manaparai and Musiri (Both Tiruchirapalli dt) 20 each, Maduranthagam (Kanchipuram dt), Villupuram and Dindigul 19 each, Papanasam (Thanjavur dt), Aravakurichi (Karur dt) and Vedasandur (Dindigul dt) 18 each, Chengalpattu (Kanchipuram dt), Thiruvaiyaru and Valangaiman (Both Thanjavur dt), Needamangalam (Tiruvarur dt), Tiruchirapalli Airport, Mettupatti (Madurai dt), Chatrapatti and Nilakottai (Both Dindigul dt) 17 each, Kallakurichi and Ulundurpet (Both Villupuram dt), Thirukattupalli (Thanjavur dt), Jayamkondam (Ariyalur dt), Devakottai (Sivagangai dt) and Kodaikanal 16 each, Kanchipuram, Kattumannarkoil (Cuddalore dt), Thammampatti (Salem dt), Lalgudi and Pullambadi (Both Tiruchirapalli dt) 15 each, Kodavasal and Mannargudi (Both Tiruvarur dt) 14 each, Tambaram, Virudhachalam (Villupuram dt), Puducherry Airport, Karaikal, Kumbakonam (Thanjavur dt), Nannilam (Tiruvarur dt), Ramanathapuram, Mulanur (Erode dt), Ariyalur and Karaikudi (Sivagangai dt) 13 each, Sriperumpudhur (Kanchipuram dt), Cuddalore, Vanur (Cuddalore dt), Adiramapattinam, Tiruvidaimaruthur (Thanjavur dt), Nagapattinam, Sirkali (Nagapattinam dt), Thiruvarur, Thirumayam (Pudukottai dt), Cheyyar (Thiruvannamalai dt), Kangeyam (Erode dt), Karur, Mayanur (Karur dt), Thathiengarpet (Tiruchirapalli dt) and Andipatti (Theni dt) 12 each, Thiruvallur, Tindivanam and Thirukoilur (Both Villupuram dt), Pattukottai (Thanjavur dt), Muthupet and Thiruthuraipoondi (Both Tiruvarur dt), Harur and Pappireddipatti (Both Dharmapuri dt), Udumalpet (Coimbatore dt), Erode, Ketti (Nilgiris dt), Karur Paramathi, Tiruppuvanam (Sivagangai dt), Chembarambakkam, Redhills and Thamaraipakkam (All Thiruvallur dt) 11 each, Poonamalle and Korattur (Both Thiruvallur dt) and Arakonam (Vellore dt) 10 each, Chennai Airport, Chidambaram (Cuddalore dt), Mayiladuthurai (Nagapattinam dt), Tondi, Polur (Thiruvannamalai dt), Vellore, Paramathi Velur (Namakkal dt), Attur (Salem dt), Yercaud, Bhavani and Gobichettipalayam (Both Erode dt), Thogaimalai (Karur dt), Perambalur, Marungapuri and Thuraiyur (Both Tiruchirapalli dt), Periyakulam and Uthamapalayam (Both Theni dt), Poondi (Thiruvallur dt), Tirupattur (Sivagangai dt) and Sivagangai 9 each, Chennai, Tiruttani (Thiruvallur dt), Parangipettai, Sankarapuram (Villupuram dt), Vallam (Thanjavur dt), Shenkottai (Tirunelveli dt), Arani and Sathanurdam (Both Thiruvannamalai dt), Kumarapalayam (Namakkal dt), Namakkal, Tiruppur (Coimbatore dt), Coonoor, Kulithalai (Karur dt), Vembavur (Perambalur dt), Peraiyur (Madurai dt), Watrap (Virudhunagar dt) and Cholavaram (Thiruvallur dt) 8 each