The Department of Meteorology earlier announced that the depression in the Bay of Bengal would develop into a marginal cyclone within today.
The deep depression in the Bay of Bengal was centered about 200 km east of Mullattivu coast this morning.
“It is likely to move westward causing heavy showers and strong winds over most parts of the country and surrounding sea areas. It is expected to intensify further in to a marginal cyclone (not severe) and move over northern part of Sri Lanka tonight,” the Department said.
Fishing and naval communities were requested to be vigilant about the strong winds, showery weather and rough seas in the sea areas off the coast from Mannar to Batticaloa via Jaffna and Trincomalee.
http://www.adaderana.lk/news.php?nid=20273
A map from the Meteorological Department website showing the possible track of the cyclone off the north Tamil Nadu coast
http://www.thehindu.com/news/states/tamil-nadu/cyclone-alert-for-north-tamil-nadu/article4043955.ece