New Delhi, Dec 1 (Agency) The India Meteorological Department (IMD) has declared a pre-cyclone watch for South Tamil Nadu and South Kerala coasts. Issuing a ‘Yellow Message’, the IMD on Tuesday said it is very likely to happen a cyclonic storm during next 24 hours and sent an alert for south of Tamil Nadu and south of coastal Kerala. The depression over southeast Bay of Bengal moved westwards, intensified into a deep depression over southwest and adjoining southeast Bay of Bengal in the early morning (0530 hrs IST) of December 1 and at 0830 hrs IST today, it lay over the same region about 500 km east-southeast of Trincomalee (Sri Lanka) and 900 km east-southeast of Kanyakumari, the cyclone warning department of IMD informed.
This development is likely to bring heavy to very heavy rainfall at a few places with isolated extremely heavy falls very likely over south Tamilnadu that is Kanyakumari, Tirunelveli, Thoothukudi, Tenkasi, Ramanathapuram and Sivagangai on December 2-3, over Thiruvananthapuram, Kollam, Pathanamthitta and Alappuzah in south Kerala on December 3 and isolated heavy to very heavy rainfall likely over south Tamilnadu on December 2to 4 and on south Kerala on December 3rd and 4th. It is also expected that heavy to very heavy rainfall at Isolated places very likely over north Tamilnadu, Puducherry, Mahe and Kariakal and north Kerala during December 2nd nad 3rd December, isolated heavy rainfall on December 4th whereas heavy rainfall at isolated places very likely over south Coastal Andhra Pradesh during December 2nd and 03rd and over Lakshadweep during December 3rd and 4th. During this period, squally wind speed reaching 50-60 kmph gusting to 70 kmph very likely over central parts of South Bay of Bengal during next 12 hours and It would gradually increase becoming gale wind speed reaching 60-70 kmph gusting to 80 kmph over southwest and adjoining southeast Bay of Bengal from December 1st evening. It would gradually increase becoming 70-80 kmph gusting to 90 kmph over southwest Bay of Bengal, along and off Sri Lanka coast from December 2nd morning for subsequent 24 hours. Similar condition will prevail over Comorin Area, Gulf of Mannar and south Tamilnadu-Kerala coasts from December 2nd forenoon. It will gradually increase becoming 55-65 kmph gusting to 75 kmph over Gulf of Mannar, along and off south Tamilnadu, Kerala coasts, over Comorin Area, Lakshadweep-Maldives area and adjoining southeast Arabian Sea from December 3rd morning and 70-80 kmph gusting to 90 kmph from evening of December 3rd for subsequent 24 hours.
Under this change in weather conditions, sea condition will be very rough over southeast Bay of Bengal and it will continue during December 1st and in Comorin Area, Gulf of Mannar and along & and off south Tamilnadu-Kerala coasts from December 2nd to 4th. Fishermen have been advised not to venture in the sea and total suspension of fishing operation during December 1- 4 whereas they have been advised to return to the coast by the Tuesday evening.