Tropical Storm Kajiki made landfall in Thailand this morning, impacting upper northeastern regions before weakening and moving into Nan province by the evening. The Thai Meteorological Department (TMD) has issued a warning for heavy rainfall in 40 provinces today, August 26.
Over the next 24 hours, heavy rain is expected in areas of northern, upper northeastern, eastern, and western southern Thailand. Central regions, including Bangkok and surrounding areas, will experience isolated heavy downpours.
Residents, especially in Chiang Rai, Phayao, Nan, Nong Khai, Bueng Kan, Sakon Nakhon, Nakhon Phanom, Trat, and Ranong, are advised to be cautious of severe rain, strong winds, and potential flash floods, particularly in mountainous and low-lying areas. This is due to Tropical Storm Kajiki currently over Laos, combined with a strong southwest monsoon affecting the Andaman Sea, Thailand, and the Gulf of Thailand.
The upper Andaman Sea and the upper Gulf of Thailand are experiencing relatively strong winds, with waves reaching heights of 2 to 3 metres and exceeding 3 metres in stormy areas. The lower Andaman Sea is seeing waves around 2 metres, increasing beyond 2 metres in stormy conditions.
Mariners are urged to exercise caution and avoid sailing in stormy areas. Small boats in the upper Andaman Sea and the upper Gulf of Thailand are advised to remain ashore for now.
Residents along the eastern shores and the upper western southern coast should be cautious of incoming waves. Meanwhile, Tropical Storm Kajiki, with its centre over Bolikhamxay, Laos, is expected to weaken into a depression over Laos and the upper northeastern region of Thailand this morning, before further weakening into a low-pressure area over Nan province by the evening.
Weather forecast
Thunderstorms over 80% of the northern region, with strong winds and heavy to very heavy rain in Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Nan, Phrae, Uttaradit, Phichit, Phitsanulok, and Phetchabun. Temperatures will range from 22 to 24°C to 29 to 33°C.
The northeastern region will also see thunderstorms over 80% of the area, with strong winds and heavy rain in Loei, Nong Khai, Bueng Kan, Nong Bua Lamphu, Udon Thani, Sakon Nakhon, Nakhon Phanom, Chaiyaphum, Khon Kaen, and Kalasin. Temperatures will range from 22 to 24°C to 27 to 32°C.
The central region will experience thunderstorms over 70% of the area, with heavy rain in Nakhon Sawan, Uthai Thani, Lopburi, Saraburi, and Kanchanaburi. Temperatures will range from 23 to 25°C to 32 to 33°C.
The eastern region will have thunderstorms over 70% of the area, with heavy to very heavy rain in Nakhon Nayok, Prachinburi, Rayong, Chanthaburi, and Trat. Temperatures will range from 23 to 26°C to 28 to 33°C, with waves in the sea reaching 2 to 3 metres, exceeding 3 metres in stormy areas.
The southern region (eastern coast) will see thunderstorms over 60% of the area, with heavy rain in Phetchaburi and Prachuap Khiri Khan. Temperatures will range from 23 to 25°C to 32 to 35°C.
From Surat Thani upward, southwest winds will blow at speeds of 20 to 35 kilometres per hour, with sea waves of 1 to 2 metres, exceeding 2 metres offshore and in stormy areas. From Nakhon Si Thammarat downward, southwest winds will be 15 to 35 kilometres per hour, with wave heights around 1 metre, reaching 1 to 2 metres offshore and exceeding 2 metres in stormy areas.
The southern region (western coast) will have thunderstorms over 60% of the area, with heavy to very heavy rain in Ranong, Phang Nga, and Phuket. Temperatures will range from 23 to 25°C to 2 to 34°C.
From Phang Nga upward, southwest winds will blow at 20 to 40 kilometres per hour, with sea waves of 2 to 3 metres, exceeding 3 metres in stormy areas. From Phuket downward, southwest winds will be 20 to 35 kilometres per hour, with wave heights around 2 metres, exceeding 2 metres in stormy areas, reported KhaoSod.
Bangkok and surrounding areas will experience thunderstorms over 70% of the area, with temperatures ranging from 25 to 26°C to 31 to 33°C and southwest winds blowing at 10 to 20 kilometres per hour.
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