Heavy rain warning for 36 Thai provinces, flash floods and forest runoff predicted

The Thailand Meteorological Department (TMD) today issued a heavy rain warning for 36 provinces, including Bangkok, cautioning against potential flash floods and forest runoff. The advisory follows the weakening of a high-pressure system that has dominated Northern Thailand and the South China Sea.

The eastern monsoon winds are now covering the lower northeastern region, the eastern region, and the Gulf of Thailand. This shift has resulted in heavy rainfall in these areas.

Additionally, the monsoon trough passing through the upper southern region combined with the southwesterly monsoon, which continues to prevail over the Andaman Sea, the lower southern region, and the lower Gulf of Thailand, is causing heavy rainfall in the southern region.

The public in the southern region is advised to be wary of dangers from heavy rainfall and accumulated rain, which may lead to sudden flash floods and forest runoff, especially in hillside areas near waterways and in low-lying areas.

The TMD’s seven-day regional weather forecast indicates a heavy rain warning from October 24 to 28. Waves in the Andaman Sea and the Gulf of Thailand are around one metre high, but areas with thunderstorms can expect waves higher than 2 metres. Boat operators are urged to be cautious and avoid areas with thunderstorms.

Cyclone Hamoon is currently in the upper Bay of Bengal and is expected to move to the coast of Bangladesh between October 25 and 26. This cyclone does not affect Thailand.

Heavy rain warning

The heavy rain warning for Thailand from 6am today to 6am tomorrow shows that the northern region will experience thunderstorms in 30% of the area, especially in the provinces of Mae Hong Son, Chiang Mai, Lamphun, Lampang, and Tak. The lowest temperature is between 22 and 24 degrees Celsius, with the highest temperature between 31 and 35 degrees Celsius, and an east wind speed of 10 to 20 kilometres per hour.

The northeastern region will experience thunderstorms in 40% of the area and heavy rainfall in some areas, especially in the provinces of Sakon Nakhon, Nakhon Phanom, Mukdahan, Amnat Charoen, Buriram, Surin, Sisaket, and Ubon Ratchathani. The lowest temperature is between 21 and 26 degrees Celsius, with the highest temperature between 31 and 34 degrees Celsius, and a north-east wind speed of 10 to 25 kilometres per hour.

Today, 36 provinces, including Bangkok, are at risk of heavy rain, reported KhaoSod.

The central region will experience thunderstorms in 40% of the area, especially in the provinces of Nakhon Sawan, Uthai Thani, Chainat, Kanchanaburi, Ratchaburi, Samut Songkhram, Samut Sakhon, and Nakhon Pathom. The lowest temperature is between 24 and 26 degrees Celsius, with the highest temperature between 33 and 35 degrees Celsius, and an east wind speed of 10 to 25 kilometres per hour.

The eastern region will experience thunderstorms in 40% of the area and heavy rainfall in some areas, especially in the provinces of Sa Kaeo, Chon Buri, Rayong, Chanthaburi, and Trat.

The lowest temperature is between 24 and 27 degrees Celsius, with the highest temperature between 32 and 35 degrees Celsius, and an east wind speed of 15 to 30 kilometres per hour. The sea has waves about 1 metre high, with waves higher than 2 metres in areas with thunderstorms.

Impending Thunderstorms

For the south (east coast), there are thunderstorms in 60% of the area and heavy rainfall in some areas, especially in the provinces of Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Pattalung, and Songkhla. The lowest temperature is between 23 and 25 degrees Celsius, with the highest temperature between 31 and 34 degrees Celsius.

From Surat Thani province upwards: Variable winds with a speed of 15 to 30 kilometres per hour. The sea has waves about 1 metre high, with waves higher than 2 metres in areas with thunderstorms.

From Nakhon Si Thammarat province down Southwesterly winds with a speed of 15 to 30 kilometres per hour. The sea has waves about 1 metre high, with waves higher than 2 metres in areas with thunderstorms.

For the South (west coast), there are thunderstorms in 40% of the area, especially in the provinces of Krabi, Trang, and Satun. The lowest temperature is between 24 and 25 degrees Celsius, with the highest temperature between 31 and 34 degrees Celsius.

North-easterly winds with a speed of 15 to 30 kilometres per hour. The sea has waves about 1 metre high, with waves higher than 2 metres in areas with thunderstorms.

Bangkok and its vicinity will experience thunderstorms in 40% of the area. The lowest temperature is between 26 and 28 degrees Celsius, with the highest temperature between 33 and 36 degrees Celsius, and an east wind speed of 10 to 25 kilometres per hour.

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