The Meteorology Department warns of heavy rain and strong winds in the Southern, South-eastern and Western Sea areas of the island.
The possibility for heavy showers or thundershowers and sudden roughness, associated with sudden increase of wind speed (up to 70-80 kmph) in the sea areas off the coast extending from Matara to Potuvil via Hambanthota and in the sea areas off the coast extending from Puttalam to Negombo is high.
Naval and fishing communities are also requested to be vigilant in this regards, the advisory said.
The department said that as at 5.30 a.m. today the active clouds which were developed in the Southern sea area is active over the mentioned sea area and are likely to persist during next few hours.