Monsoon trough and low-pressure system bring heavy rains and rough seas to Thailand
TMD warns of heavy rain and flash floods across Thailand, with strong winds and rough seas in the Andaman Sea and Gulf. Tropical depression expected to intensify.
The Thai Meteorological Department (TMD) reported on Thursday that the monsoon trough stretches across the Central, East, and lower Northeast regions, extending into an active low-pressure cell over the South China Sea. The moderate southwest monsoon currently affecting the Andaman Sea, the South, and the Gulf of Thailand will strengthen over the coming days.
Isolated heavy rain is expected across the country, with particularly heavy rainfall likely in the East. People in these areas are advised to be cautious of heavy to very heavy rain and the accumulation of water that could lead to flash floods and overflows, especially along waterways near foothills and lowland areas.
Waves in the upper Andaman Sea are expected to reach around 2 metres high, with the lower Andaman Sea and the upper Gulf seeing waves of 1-2 metres, rising above 2 metres in thundershowers. All vessels should proceed with caution and avoid sailing through areas with thunderstorms.
Additionally, a tropical depression over the Philippines is expected to move into the upper South China Sea and intensify into a tropical storm. The storm is forecast to make landfall over southern China between September 19-20, but it is not expected to affect Thailand’s weather.
The weather forecast for the next 24 hours is as follows:
North: Scattered thundershowers and isolated heavy rain in Tak, Sukhothai and Phetchabun. Minimum temperature 23-25 °C. Maximum temperature 30-34 °C.
Northeast: Fairly widespread thundershowers and isolated heavy rain in Loei, Nong Khai, Bueng Kan, Sakon Nakhon, Nakhon Phanom, Mukdahan, Yasothon, Amnat Charoen, Nakhon Ratchasima, Buriram, Surin, Sisaket and Ubon Ratchathani. Minimum temperature 23-25 °C. Maximum temperature 32-34 °C.
Central: Fairly widespread thundershowers and isolated heavy rain in Uthai Thani, Ayutthaya, Saraburi, Kanchanaburi, Suphan Buri, Ratchaburi, Samut Songkhram, Samut Sakhon and Nakhon Pathom. Minimum temperature 24-26 °C. Maximum temperature 32-34 °C.
East: Fairly widespread thundershowers and isolated heavy to very heavy rain in Nakhon Nayok, Prachin Buri, Sa Kaeo, Chachoengsao, Chon Buri, Rayong, Chanthaburi and Trat. Minimum temperature 23-25 °C. Maximum temperature 29-34 °C. Wave height 1-2 metres and above 2 metres in thundershowers.
South (East Coast): Scattered thundershowers and isolated heavy rain in Phetchaburi, Prachuap Khiri Khan, Chumphon, Pattani and Narathiwat. Minimum temperature 23-26 °C. Maximum temperature 31-34 °C. Wave height about 1 metre, 1-2 metres offshore and above 2 metres in thundershowers.
South (West Coast): Scattered thundershowers and isolated heavy rain in Ranong and Phang Nga. Minimum temperature 23-26 °C. Maximum temperature 29-33 °C. Wave height 1-2 metres and above 2 metres in thundershowers.
Bangkok Metropolitan: Fairly widespread thundershowers and isolated heavy to very heavy rain. Minimum temperature 24-25 °C. Maximum temperature 32-34 °C.
