The Thai Meteorological Department (TMD) has issued its third warning regarding a tropical depression, predicting heavy rainfall in Bangkok and two other regions, with an 80% chance of precipitation. Additionally, 45 provinces are on alert for potential flash floods and forest runoff tomorrow, September 8.
Over the next 24 hours, certain areas in Thailand will experience heavy to very heavy rainfall, particularly in the eastern region. Residents in Nakhon Nayok, Prachin Buri, Trat, Ranong, and Phang Nga are advised to exercise caution due to the risk of flash floods and forest runoff, especially in mountainous areas and lowlands.
This situation results from a monsoon trough affecting the lower northern, central, and lower northeastern regions, combined with a moderate southwesterly monsoon over the Andaman Sea, southern Thailand, and the Gulf of Thailand.
The TMD’s first announcement about the tropical depression indicated that the storm is expected to make landfall in southern China between September 8 and September 9. In the northern Andaman Sea, moderate winds are expected, with waves reaching approximately 2 metres, and areas with thunderstorms experiencing waves exceeding 2 metres.
In contrast, the lower Andaman Sea and upper Gulf of Thailand will see waves between 1 and 2 metres, with higher waves during thunderstorms. Mariners are advised to exercise caution and avoid sailing in stormy areas.
The tropical depression in the upper South China Sea is expected to move northwestward at 10 kilometres per hour and make landfall in southern China between September 8 and September 9. This storm will not directly affect Thailand’s weather, although the southwesterly monsoon covering Thailand will intensify. Travellers to the affected areas should check the weather conditions before their journey.
Tropical depression
The northern region will experience thunderstorms over 60% of the area, with heavy rainfall in Tak, Kamphaeng Phet, Phitsanulok, Phichit, and Phetchabun. Temperatures will range from a low of 22 to 25 degrees Celsius to a high of 34 to 36 degrees Celsius, with variable winds at 5 to 15 kilometres per hour.
The northeastern region will see thunderstorms in 70% of the area, with heavy rain in Chaiyaphum, Khon Kaen, Roi Et, Maha Sarakham, Yasothon, Amnat Charoen, Nakhon Ratchasima, Buriram, Surin, Sisaket, and Ubon Ratchathani. Temperatures will range from 24 to 25°C to 31 to 34°C, with variable winds at 10 to 15 kilometres per hour.
The central region will experience thunderstorms in 80% of the area, with heavy rain in Nakhon Sawan, Uthai Thani, Chai Nat, Suphan Buri, Sing Buri, Ang Thong, Lop Buri, Saraburi, Phra Nakhon Si Ayutthaya, Kanchanaburi, Ratchaburi, Nakhon Pathom, and Samut Sakhon. Temperatures will range from 22 to 25°C to 33 to 35°C, with variable winds at 10 to 15 kilometres per hour.
In the eastern region, thunderstorms will affect 80% of the area, with heavy to very heavy rain in Nakhon Nayok, Prachin Buri, Sa Kaeo, Chachoengsao, Chon Buri, Rayong, Chanthaburi, and Trat. Temperatures will range from 24 to 25°C to 31 to 33°C, with southwesterly winds at 15 to 35 kilometres per hour and waves of 1 to 2 metres, exceeding 2 metres in thunderstorms.
The southern region (eastern coast) will have thunderstorms in 40% of the area, mainly in Phetchaburi, Prachuap Khiri Khan, Chumphon, and Surat Thani, with temperatures ranging from 23 to 26°C to 32 to 35°C. Winds will be southwesterly at 15 to 35 kilometres per hour, with waves around 1 metre and higher offshore.
The southern region (western coast) will experience thunderstorms over 60% of the area, with heavy rain in Ranong, Phang Nga, Phuket, and Krabi, with temperatures between 23 and 25°C and 30 and 33°C.
In Phang Nga and above, southwesterly winds will reach 20 to 35 kilometres per hour, with waves at 2 metres and higher during thunderstorms. From Phuket southward, winds will be 15 to 35 kilometres per hour, with waves of 1 to 2 metres, exceeding 2metres in thunderstorms, reported KhaoSod.
Bangkok and its vicinity will see thunderstorms in 80% of the area, with heavy rain in some places, temperatures ranging from 24 to 26°C to 33 to 35°C, with southwesterly winds at 10 to 15 kilometres per hour.
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