Heavy rainfall forecast for 46 Thai provinces including Bangkok
Flash flood fears grow with continued rainfall
The Thai Meteorological Department (TMD) has forecasted heavy rainfall for 46 provinces, including Bangkok, covering 60% of the area today, May 22.
Thunderstorms and heavy rain are expected in the eastern and western southern regions, including Bangkok and its vicinity. Residents in these areas are advised to be cautious due to the ongoing southwest monsoon over the Andaman Sea, Thailand, and the Gulf of Thailand.
The waves in the Andaman Sea and the Gulf of Thailand are expected to be mild, with heights of approximately 1 metre in the Andaman Sea and less than 1 metre in the Gulf. However, during thunderstorms, wave heights could exceed 2 metres. Therefore, sailors in these regions are urged to navigate cautiously and avoid stormy areas.
From May 23 to May 27, rainfall is likely to increase across Thailand, with some areas experiencing very heavy rain. This is due to the strengthening of the southwest monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand, combined with a monsoon trough over upper Thailand and the upper southern region.
Residents in these areas should be prepared for potential flash floods and water runoff, especially in foothill areas near waterways and lowlands.
Those in low-lying areas should avoid travelling through stormy areas and flood-prone routes. Farmers are encouraged to reinforce their fruit trees and take preventive measures against possible damage to crops and livestock.
Weather forecast
In northern Thailand, thunderstorms are expected in 60% of the area, mainly in Mae Hong Son, Chiang Mai, Chiang Rai, Phayao, Nan, Lampang, Phichit, Sukhothai, Uttaradit, Phitsanulok, and Phetchabun. Temperatures will range from 23 to 27°C at the lowest to 33 to 37°C at the highest. The southwest wind will blow at 5 to 15 kilometres per hour.
In northeastern Thailand, 40% of the area will experience thunderstorms, particularly in Loei, Nong Khai, Bueng Kan, Udon Thani, Sakhon Nakhon, Nakhon Phanom, Chaiyaphum, Nakhon Ratchasima, and Ubon Ratchathani. Temperatures will vary between 23 and 25°C and 33 and 35°C, with southwest winds at 10 to 20 kilometres per hour..
Central Thailand will see thunderstorms in 40% of the area, affecting Nakhon Sawan, Uthai Thani, Lopburi, Saraburi, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon, and Samut Songkhram. Temperatures will range from 24 to 26°C at the lowest to 35 to 37°C at the highest. The southwest wind will blow at 10 to 20 kilometres per hour.
Eastern Thailand will experience thunderstorms in 60% of the area, with heavy rain in some places like Nakhon Nayok, Chachoengsao, Chon Buri, Rayong, Chanthaburi, and Trat. The lowest temperatures will be 25 to 27°C, while the highest will be 31 to 35°C. Winds from the southwest will reach speeds of 10 to 30 kilometres per hour, with sea waves under 1 metre and over 2 metres in stormy areas.
In the southern region (east coast), 40% of the area will have thunderstorms, mainly in Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, and Nakhon Si Thammarat. Temperatures will fluctuate between 24 and 26°C and 32 and 36°C, with southwest winds at 10 to 30 kilometres per hour. Sea waves will be under 1 metre, exceeding 2 metres during storms.
In the southern region’s (west coast), thunderstorms will affect 60% of the area, with some heavy rain in Ranong, Phang Nga, Phuket, Krabi, and Trang. Temperatures will vary from 24 to 26°C to 32 to 34°C. Southwest winds will blow at 15 to 30 kilometres per hour, with sea waves around 1 metre and over 2 metres in stormy areas.
In Bangkok and its vicinity, thunderstorms will affect 60% of the area, with heavy rain in some places. Temperatures will range from 25 to 27°C at the lowest to 32 to 34°C at the highest. The southwest wind will blow at 10 to 20 kilometres per hour, reported KhaoSod.
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