The Thai Meteorological Department (TMD) issued its 15th and final advisory (No. 291/2025) on Typhoon “Matmo”, confirming that as of 1am Tuesday (October 7), the tropical storm had weakened into a strong low-pressure cell over northern Vietnam.
The storm’s remnants are strengthening the southwest monsoon over the Andaman Sea, Thailand and the Gulf of Thailand, causing scattered heavy rain across upper Thailand — particularly in the North, Northeast and the monsoon-facing side of the East.
The department advised residents in these areas to beware of flash floods, runoff and overflowing rivers, especially in foothills, lowlands and flood-prone zones.
Moderate winds are expected over the upper Andaman Sea, with waves 1–2 metres high and exceeding 2 metres during thunderstorms. Mariners are urged to proceed with caution and avoid sailing in stormy areas.