The IMD said that the sea conditions are also likely to be rough to very rough and issued a warning to the fishermen not to venture into the Southwest Bay of Bengal, Gulf of Mannar, Comorin Area and along and off Sri Lanka and south Tamil Nadu and Karaikal coasts till February 2. Weather Forecast for Tamil Nadu and Puducherry: IMD Warns for Stormy Winds in Coastal Regions; Asks Fishermen Not To Venture Into Seas Till February 2.