Heavy rainfall forecast for 45 Thai provinces, flash flood alert

Heavy rainfall warnings have been issued for 45 provinces in Thailand, with potential hazards including flash floods and runoff. The Meteorological Department of Thailand (TMD) advises caution, particularly in hilly areas and near waterways, and urges sailors to avoid stormy seas.

The TMD forecasted the weather for the next 24 hours, predicting heavy rainfall in the northern, northeastern, and eastern regions. Residents in these areas are advised to remain vigilant due to the risk of flash floods and water runoff, especially in hilly terrains and low-lying regions.

A moderate monsoon trough is currently passing through the upper northern region of Thailand and northern Laos, extending into a low-pressure area over northern Vietnam and the Gulf of Tonkin. This, combined with a moderate southwesterly monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand, is expected to cause significant rainfall and strong winds.

The Andaman Sea and the Gulf of Thailand will experience waves approximately 1 metre high, with stormy areas seeing waves between 1 and 2 metres high. The TMD advises sailors to avoid navigating through stormy conditions.

Meanwhile, Typhoon Omphul is centred southeast of Japan. Travellers to this region are urged to check weather conditions before departure.

The weather forecast for Thailand from 6am today to 6am tomorrow indicates thunderstorms over 70% of the northern region, with heavy rain expected in Mae Hong Son, Chiang Mai, Chiang Rai, Lampang, Phayao, Nan, Phrae, Tak, Phitsanulok, and Phetchabun provinces. Temperatures are expected to range between 23 and 26 degrees Celcius at the lowest and 31 and 36°C at the highest, with southwesterly winds blowing at speeds of 5 to 15 kilometres per hour.

In the northeastern region, thunderstorms are predicted in 60% of the area, with heavy rain anticipated in Loei, Nong Khai, Bueng Kan, Nong Bua Lamphu, Udon Thani, Sakon Nakhon, Nakhon Phanom, and Mukdahan provinces. Temperatures will range from 24 to 26°C at the lowest and 31 to 36°C at the highest, with southwesterly winds blowing at 10 to 20 kilometres per hour.

Other regions

Central Thailand will also experience thunderstorms in 60% of the area, mainly in Kanchanaburi, Ratchaburi, Suphan Buri, Nakhon Pathom, Phra Nakhon Si Ayutthaya, Lopburi, and Saraburi provinces. Temperatures are expected to be between 25 and 26°C at the lowest and 35 and 37°C at the highest, with southwesterly winds blowing at 10 to 25 kilometres per hour.

In the eastern region, 60% of the area will see thunderstorms, with heavy rain forecasted for Nakhon Nayok, Prachin Buri, Chanthaburi, and Trat provinces. Temperatures will range between 25 and 28°C at the lowest and 32 and 35°C at the highest, with southwesterly winds blowing at 15 to 30 kilometres per hour. Waves in the sea will be approximately 1 metre high, with stormy areas experiencing waves higher than 1 metre.

The southern region (East Coast) will have thunderstorms in 40% of the area, mainly affecting Phetchaburi, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Yala, and Narathiwat provinces. Temperatures will range from 24 to 26°C at the lowest and 34 to 36°C at the highest, with southwesterly winds blowing at 15 to 30 kilometres per hour. Waves in the sea will be about 1 metre high, with stormy areas seeing waves higher than 1 metre.

The southern region (West Coast) will face thunderstorms in 60% of the area, primarily affecting Ranong, Phang Nga, Trang, and Satun provinces. Temperatures will range from 24 to 26°C at the lowest and 32 to 35°C at the highest, with southwesterly winds blowing at 15 to 30 kilometres per hour. Waves in the sea will be approximately 1 metre high, with stormy areas experiencing waves higher than 1 metre.

Bangkok and its surrounding areas will see thunderstorms in 60% of the area, mostly in the afternoon and evening. Temperatures will range between 26 and 28°C at the lowest and 34 and 37°C at the highest, with southwesterly winds blowing at 10 to 25 kilometres per hour.

Residents are advised to stay informed about the weather conditions and take necessary precautions to ensure safety, reported KhaoSod.