Port Blair, July 27: The INCOIS Observatory, Hyderabad, has forecast high waves in the range of 3.0 – 3.5 meters from 17:30 hours on 27-07-2015 to 23:30 hours of 29-07-2015 along the west coast of Andaman Islands between Ten Degree Channel to Coco Channel. Current speeds may vary between 58 – 70 cm/sec. In Nicobar, hgh waves in the range of 2.5 – 2.7 meters are expected from 17:30 hours on 27-07-2015 to 23:30 hours of 28-07-2015 along the west coast of Nicobar Islands between Ten Degree Channel to Great Channel. Current speeds may vary between 98 – 112 cm/sec. Fishermen have been advised to be cautious while venturing into the sea.