Heavy rain forecast for 47 Thai provinces, warns of flash floods
Flash flood fears rise as relentless downpours threaten low-lying areas
The Thai Meteorological Department (TMD) has forecast heavy rain across 47 provinces, affecting three regions and Bangkok, with the heaviest rainfall covering 70% of the area. Residents are advised to prepare for potential flash floods and landslides on May 30.
The TMD predicts that northern and northeastern Thailand will experience particularly severe weather, urging locals in these regions to stay vigilant against the risks posed by heavy and accumulated rainfall. This weather could lead to sudden flooding, forest run-off, and landslides, especially in hilly terrains and low-lying areas near water channels.
Farmers are encouraged to improve drainage systems in their fields to mitigate the impact on crops and livestock. A monsoon trough is moving across upper northern Thailand and Laos, reaching a low-pressure area near northern Vietnam’s coast.
Meanwhile, a moderate southwesterly monsoon is affecting the Andaman Sea, southern Thailand, and the Gulf of Thailand. The upper Andaman Sea will see moderate sea conditions with waves around 2 metres high, while the lower part will have waves between 1 and 2 metres, rising above 2 metres during thunderstorms.
Mariners in the Andaman Sea and Gulf of Thailand are advised to exercise caution and avoid stormy areas; small boats in the upper Andaman Sea should remain ashore.
In northern Thailand, thunderstorms are forecast in 70% of the area, with heavy rain expected in Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Phrae, Nan, Uttaradit, Tak, Phitsanulok, and Phetchabun. Temperatures will range from 24 to 25°C to 30 to 34°C, with southwesterly winds at speeds of 5 to 15 kilometres per hour.
Weather forecast
The northeast will also see thunderstorms in 70% of the area, with heavy rainfall anticipated in Loei, Nong Bua Lamphu, Udon Thani, Nong Khai, Bueng Kan, Sakon Nakhon, Nakhon Phanom, Chaiyaphum, Khon Kaen, Maha Sarakham, Kalasin, Mukdahan, Roi Et, Yasothon, Amnat Charoen, and Nakhon Ratchasima. Temperatures will range from 23 to 25°C to 32 to 34°C, with southeasterly winds at speeds of 10 to 20 kilometres per hour.
In central Thailand, thunderstorms will occur in 60% of the area, with heavy rain in Kanchanaburi, Ratchaburi, Lopburi, and Saraburi. Temperatures will range from 26 to 28°C to 33 to 35°C, with southwesterly winds at speeds of 10 to 20 kilometres per hour.
The eastern region will see thunderstorms in 70% of the area, with heavy rain in Nakhon Nayok, Prachin Buri, Sa Kaeo, Chachoengsao, Chon Buri, Rayong, Chanthaburi, and Trat. Temperatures will range from 24 to 28°C to 32 to 34°C, with southwesterly winds at speeds of 15 to 30 kilometres per hour. The sea will have waves around 1 metre high, rising above 2 metres during thunderstorms.
In southern Thailand (east coast), thunderstorms are expected in 30% of the area, mainly in Phetchaburi, Prachuap Khiri Khan, Chumphon, Yala, and Narathiwat.
Temperatures will range from 23 to 28°C to 33 to 35°C, with southwesterly winds at speeds of 15 to 30 kilometres per hour. The sea will have waves around 1 metre high, rising above 2 metres during thunderstorms.
In the south (west coast), thunderstorms will occur in 20% of the area, mainly in Ranong and Phang Nga. Temperatures will range from 26 to 27°C to 32 to 35°C.
From Phang Nga upwards, southwesterly winds will blow at speeds of 20 to 35 kilometres per hour, with waves around 2 metres high, rising above 2 metres during thunderstorms. From Phuket downwards, winds will be at speeds of 15 to 35 kilometres per hour, with waves between 1 and 2 metres high, rising above 2 metres during thunderstorms, reported KhaoSod.
Bangkok and its surrounding areas will experience thunderstorms covering 70% of the area, with heavy rain in some parts. Temperatures will range from 25 to 28°C to 32 to 35°C, with southwesterly winds at speeds of 10 to 20 kilometres per hour.
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