Heavy rain warning for 46 provinces, North hit hardest

The Thai Meteorological Department (TMD) issued a warning for heavy rain in 46 provinces today, with the northern region expected to be hit the hardest, affecting 80% of the area. Residents are advised to be cautious of potential floods and flash floods.

The TMD forecasts weather conditions for the next 24 hours, predicting a moderate monsoon trough passing over the upper north and upper Laos, extending into a low-pressure area in upper Vietnam.

Combined with the southwesterly and southeasterly winds covering the east and upper Gulf of Thailand, this will cause heavy rainfall in parts of the north, northeast, Bangkok and its vicinity, and the south. The east is expected to experience the heaviest rainfall, the department advised.

“Residents in these areas should be aware of the dangers of heavy to very heavy rainfall, which may cause sudden floods and flash floods, especially in foothill areas and low-lying regions.”

In addition to the rain, moderate wind waves of 1 to 2 metres are expected in the upper Andaman Sea and upper Gulf of Thailand, with waves exceeding 2 metres in thundershower areas. Mariners in the affected regions are urged to proceed with caution and avoid sailing in stormy areas.

The north will experience thunderstorms in 80% of the area, with heavy rain in Mae Hong Son, Chiang Mai, Chiang Rai, Lampang, Lamphun, Phayao, Nan, Phrae, Uttaradit, Tak, Phitsanulok, and Phetchabun. Temperatures will range from 23 to 25 degrees Celsius at their lowest to 26 to 31 degrees Celsius at their highest. Southwesterly winds will blow at a speed of 5 to 15 kilometres per hour.

The northeast will have thunderstorms in 70% of the area, with heavy rain in Loei, Nong Khai, Bueng Kan, Udon Thani, Sakon Nakhon, Nakhon Phanom, Chaiyaphum, Nakhon Ratchasima, Surin, Si Sa Ket, and Ubon Ratchathani. Temperatures will range from 23 to 26 degrees Celsius at their lowest to 28 to 34 degrees Celsius at their highest. Southwesterly winds will blow at a speed of 10 to 20 kilometres per hour.

Heavy rain

The central region will have thunderstorms in 60% of the area, mostly in Nakhon Sawan, Uthai Thani, Chai Nat, Lopburi, Saraburi, Phra Nakhon Si Ayutthaya, Kanchanaburi, and Ratchaburi. Temperatures will range from 24 to 26 degrees Celsius at their lowest to 31 to 33 degrees Celsius at their highest. Southwesterly winds will blow at a speed of 10 to 20 kilometres per hour.

The east will experience thunderstorms in 60% of the area, with heavy to very heavy rain in Nakhon Nayok, Prachinburi, Chon Buri, Rayong, Chanthaburi, and Trat. Temperatures will range from 23 to 27 degrees Celsius at their lowest to 29 to 33 degrees Celsius at their highest.

Southwesterly winds will blow at a speed of 15 to 35 kilometres per hour. The sea will have waves 1 to 2 metres high, and over 2 metres high in stormy areas.

The south (east coast) will have thunderstorms in 60% of the area, mostly in Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, and Nakhon Si Thammarat. Temperatures will range from 24 to 26 degrees Celsius at their lowest to 31 to 35 degrees Celsius at their highest.

Southwesterly winds will blow at a speed of 15 to 30 kilometres per hour. The sea will have waves approximately 1 metre high and over 2 metres high in stormy areas.

The south (west coast) will have thunderstorms in 60% of the area, mostly in Ranong, Phang Nga, Trang, and Satun. Temperatures will range from 24 to 26 degrees Celsius at their lowest to 31 to 34 degrees Celsius at their highest.

From Phuket upwards, southwesterly winds will blow at a speed of 15 to 35 kilometres per hour, with sea waves 1 to 2 metres high, and over 2 metres high in stormy areas. From Krabi downwards, southwesterly winds will blow at a speed of 15 to 30 kilometres per hour, with sea waves approximately 1 metre high, and over 2 metres high in stormy areas, reported KhaoSod.

Bangkok and its vicinity will have rain or thunderstorms in 60% of the area. Temperatures will range from 26 to 28 degrees Celsius at their lowest to 31 to 34 degrees Celsius at their highest. Southwesterly winds will blow at a speed of 10 to 20 kilometres per hour.