The cyclonic storm ‘THANE’ OVER southwest Bay of Bengal is likely to move westwards and cross north Tamil Nadu coast between Nagapattinam and Chennai, close to Puducherry around early morning of 30th December 2011. The system was centered at noon todayabout 180 km east of Puduchery andat the same distance southeast of Chennai ,Tamilnadu. Sea condition is very rough. It will gradually become very high to phenomenal along and of north Tamil Nadu, Puducherry and south Andhra Pradesh coasts.Fishermen along north Tamil Nadu, Puducherry & south Andhra Pradesh coasts are advised not venture into sea during next 48 hrs.
Under the influence of this system, rainfall at most places with heavy to very heavy falls a few places and isolated extremely heavy falls (25 cm or more) would occur over north Tamil Nadu & Puducherry during next 48 hours. Rainfall at most places with isolated heavy to very heavy rainfall would also occur over south coastal Andhra Pradesh and Rayalseema and isolated heavy rainfall would occur over south Tamil Nadu during the same period.
Squally winds speed reaching 55-65 kmph gusting to 75 kmph is likely along and off north Tamil Nadu, Puducherry and south Andhra Pradesh coasts. The wind speed will increase gradually becoming 110-120 kmph gusting to 135 kmph along and off north Tamilnadu and adjoining south Andhra Pradesh coast from today coast from today night onwards.
Storm surge of about 1.0-1.5 meter height above the astronomical tide would inundate the low lying areas of Puducherry and Chennai, Tiruvallur, Kanchipuram & Villpuram districts of north Tamil Nadu at the time of landfall.