A low-pressure cell cover upper Myanmar while the rather strong southwest monsoon prevails over the Andaman Sea, the South and the Gulf. Isolated heavy rains are likely in the country. People in thease areas should beware of heavy rains and its accumulation that may cause flash flood and overflows, especially along foothills near waterways and lowlands. The rather strong winds force waves in the upper Andaman Sea are likely 2-3 meters high and above 3 meters high in thundershowers. In the lower Andaman Sea and the upper Gulf, the waves are likely about 2 meters high and above 2 meters high in thundershowers. All ships should proceed with caution and keep off thundershowers, small boats in the upper Andaman Sea should keep ashore.