Severe weather alert: heavy rain and flash flood risk in 32 Thai provinces
Rising waters threaten vulnerable communities as storms intensify
On August 18, the Thai Meteorological Department (TMD) issued a severe weather warning for 32 provinces, highlighting the risk of heavy rainfall in the northeast, covering approximately 70% of the area. Residents are cautioned about potential flash floods and overflow from mountain streams due to prevailing monsoon conditions.
Over the next 24 hours, rainfall across Thailand is expected to decrease, yet some regions in the north, northeast, and east will still experience significant downpours.
The provinces of Mae Hong Son, Bueng Kan, Sakon Nakhon, Nakhon Phanom, Mukdahan, Chanthaburi, and Trat are most vulnerable to heavy rain and accumulated precipitation. These conditions may lead to flash floods, especially in foothill areas and low-lying regions near waterways.
The monsoon trough is moving across the upper parts of the north and northeast into a low-pressure area over the upper South China Sea. Meanwhile, a moderately strong southwest monsoon is affecting the Andaman Sea, Thailand, and the Gulf of Thailand.
The upper Andaman Sea and the upper Gulf of Thailand are experiencing moderate winds, with wave heights reaching approximately 2 metres. In stormy areas, waves may exceed 2 metres. Mariners are advised to exercise caution and avoid sailing in areas with thunderstorms.
In northern Thailand, thunderstorms are predicted in 60% of the area, with heavy rain in specific provinces like Mae Hong Son, Chiang Rai, Phayao, Nan, Uttaradit, Tak, Phitsanulok, and Phetchabun. The region’s temperatures will range from 22 to 24°C at night to 32 to 35°C during the day, with variable winds at 10 to 15 kilometres per hour.
Weather forecast
The northeast will see thunderstorms over 70% of the area, with heavy rain expected in Loei, Nong Khai, Bueng Kan, Udon Thani, Sakon Nakhon, Nakhon Phanom, Kalasin, Mukdahan, Amnat Charoen, and Ubon Ratchathani. Temperatures will vary from 22 to 25°C at night to 30 to 32°C during the day, with southwest winds at 10 to 20 kilometres per hour.
Central Thailand, including Lopburi, Saraburi, and Kanchanaburi, will experience thunderstorms across 60% of the area. Temperatures will range from 23 to 25°C at night to 32 to 34°C during the day, with variable winds at 10 to 20 kilometres per hour.
In the east, thunderstorms will occur in 60% of the area, with heavy rain in Nakhon Nayok, Prachinburi, Chanthaburi, and Trat. The region will have temperatures between 24 and 26°C at night and 31 and 34°C during the day, with southwest winds at 15 to 35 kilometres per hour. The sea will have waves 1 to 2 metres high, exceeding 2 metres in stormy areas.
The southern region, both on the eastern and western sides, will have thunderstorms in 30% of the area. The eastern side, including Phetchaburi, Prachuap Khiri Khan, Yala, and Narathiwat, will see temperatures from 23 to 25°C at night to 31 to 36°C during the day, with southwest winds at 15 to 35 kilometres per hour.
The sea will have waves about 1 metre high, rising to 1 to 2 metres offshore and over 2 metres in stormy areas. The western side will experience temperatures from 24 to 26°C at night to 32 to 35°C during the day, with southwest winds varying from 15 to 35 kilometres per hour. Wave heights will be 1 to 2 metres, exceeding 3 metres in stormy areas, reported KhaoSod.
In Bangkok and its surrounding areas, thunderstorms are expected in 60% of the area. Temperatures will range from 24 to 25°C at night to 32 to 34°C during the day, with southwest winds at 10 to 20 kilometres per hour.
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