The Department of Meteorology today issued Advisory for Strong Wind and Rough seas says The sea area off the coast extending from Puttalam to Beruwala via Colombo can be rough at times as the wind speed can increased up to 60 kmph at times. The sea area off the coast extending from Matara to Pottuvil via Hambantota can be fairly rough at times as the wind speed can increase up to 50 kmph at times. Naval and fishing communities are requested to be vigilant in this regard.