Well marked low pressure area over South West Bay of Bengal and adjoining Sri Lanka persists. It is likely to move North West wards and concentrate into a depression during the next 24 hours. Further it will continue to move North West wards and concentrate into a deep depression and cross Tamil Nadu coast between Pamban and Nagapattinam around morning of 17th May.
In view of this, Heavy rain is likely to occur at a few places over Coastal Tamil Nadu and Puducherry and heavy rain is likely to occur at one or two places over interior Tamil Nadu.
As far as Chennai is concerned the sky condition is likely to be generally cloudy. One or two spells of light rain is likely to occur in some areas. Maximum and minimum temperature is most likely to be around 34 and 29 degree Celsius respectively