The very severe cyclonic storm "THANE" over southwest Bay of Bengal moved further westward and lay at centered at 0530 hrs IST of today, the 30th December 2011 near latitude 11.80N and longitude 79.90E, very close to southeast of Puducherry. The system is likely to move westwards and cross north Tamil Nadu coast close to south of Puducherry within a few hours and weaken gradually.
Under the influence of this system, rainfall at most places with heavy to very heavy falls at a few places and isolated extremely heavy falls (25cm or more) would occur over north Tamil Nadu & Puducherry during next 24 hours. Rainfall at most places with isolated heavy to very heavy rainfall would also occur over south coastal Andhra Pradesh and Rayalseema the same period. Rainfall at many places with isolated heavy rainfall would occur over south Tamil Nadu, north Kerala and south Karnataka during next 24 hours.
Gale winds speed reaching 120-130 kmph gusting to 145 kmph is likely along and off north Tamil Nadu and Puducherry coasts during next 3 hours and then decrease gradually.
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 & Villupuram districts of north Tamil Nadu at the time of landfall.
Sea condition is phenomenal along and off north Tamil Nadu, Puducherry and adjoining south Andhra Pradesh coasts.
Fishermen along north Tamil Nadu, Puducherry & south Andhra Pradesh coasts are advised not to venture into sea during next 24 hrs.
The maximum gale wind speed of 115-125 kmph has been reported at 0530 hrs IST along north Tamil Nadu and Puducherry coast, as Puducherry and Cuddalore observatories of IMD reported maximum sustained wind speed of 125 and 115 kmph respectively.
Damage expected (over north coastal Tamil Nadu, Pudducherry and south coastal Andhra Pradesh): Extensive damage to thatched roof and huts. Minor damage to power and communication line due to uprooting of large avenue trees. Flooding of escape routes. Storm is expected to damage the standing rice, groundnut and maize in coastal districts of Tamilnadu and rice and groundnut in coastal Andhra Pradesh.
Action suggested (over north coastal Tamil Nadu, Pudducherry and south coastal Andhra Pradesh): Total suspension of fishing operations. Coastal hutment dwellers to be moved to safer place. People in affected areas to remain indoors.
Post landfall outlook: Even after landfall the system is likely to maintain its intensity for 12 hours and weaken gradually. Under its influence rainfall at most places with heavy to very heavy falls at a few places and isolated extremely heavy fall is likely to continue over north Tamil Nadu and Pudducherry during next 24 hours after landfall causing inundation of low lying areas. Gale/squally wind speed reaching 80-90 kmph gusting to 100 kmph causing damage to thatched roofs and huts breaking of tree branches causing minor damage to power and communication lines over north Tamil Nadu and Pudducherry during 12 hours after the landfall. People are advised to remain indoor/safe place and cooperate with state Govt. officials and disaster management agencies.