Weather Advisory
Subject: Heavy to very heavy rain in Thailand and
Strong Wind-Waves in upper Andaman Sea
No. 5 (97/2024)
During 21–24 May 2024, the southwest monsoon prevailing over the Andaman Sea, western part of Thailand and the Gulf is strengthening while the low-pressure cell covers the upper country. More rains and scattered heavy rains are likely in the country while isolated very heavy rains are possible in the North, the Northeast, the Central, the East and the South (west coast). People should beware of heavy to very heavy rains and accumulation that may cause flash floods and overflows especially along waterways and lowlands, and take more caution in thundershowers.
Affected areas are as followings:
21 May 2024
North: Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Uttaradit, Sukhothai, Tak, Kamphaeng Phet, Phichit, Phitsanulok and Phetchabun.
Northeast: Loei, Nong Bua Lamphu, Udon Thani, Sakon Nakhon, Nakhon Phanom, Chaiyaphum, Khon Kaen, Kalasin, Mukdahan, Maha Sarakham, Roi Et, Yasothon, Amnat Charoen, Nakhon Ratchasima, Buriram, Surin, Sisaket and Ubon Ratchathani.
Central: Nakhon Sawan, Uthai Thani, Chainat, Lopburi, Saraburi, Singburi, Ang Thong, Suphanburi, Phra Nakhon Si Ayutthaya, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon and Samut Songkhram including Bangkok and its vicinity.
East: Nakhon Nayok, Prachinburi, Sa Kaeo, Chachoengsao, Chonburi, Rayong, Chanthaburi and Trat.
South: Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Ranong, Phang Nga, Phuket, Krabi, Trang and Satun.
22 May 2024
North: Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Phrae, Uttaradit, Sukhothai, Tak, Kamphaeng Phet, Phichit, Phitsanulok and Phetchabun.
Northeast: Loei, Nong Khai, Bueng Kan, Nong Bua Lamphu, Udon
Thani, Sakon Nakhon,
Nakhon Phanom, Chaiyaphum, Khon Kaen, Kalasin, Mukdahan, Maha Sarakham, Roi Et,
Yasothon, Amnat Charoen, Nakhon Ratchasima and Buriram.
Central: Nakhon Sawan, Uthai Thani, Chainat, Lopburi, Saraburi, Singburi, Ang Thong, Suphanburi, Phra Nakhon Si Ayutthaya, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon and Samut Songkhram including Bangkok and its vicinity.
East: Nakhon Nayok, Prachinburi, Sa Kaeo, Chachoengsao, Chonburi, Rayong, Chanthaburi and Trat.
South: Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani,
Ranong, Phang Nga,
Phuket and Krabi.
2/23-24 May…
23-24 May 2024
North: Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Nan, Phrae, Tak, Sukhothai and Kamphaeng Phet.
Northeast: Loei, Nong Khai, Bueng Kan, Nong Bua Lamphu and Udon Thani.
Central: Nakhon Sawan, Uthai Thani, Chainat, Suphan Buri, Kanchanaburi, Ratchaburi, Nakhon Pathom, Samut Sakhon and Samut Songkhram including Bangkok and its vicinity.
East: Rayong, Chanthaburi and Trat.
South: Phetchaburi,
Prachuap Khiri Khan, Chumphon, Surat Thani, Ranong, Phang Nga
and Phuket.
In addition, an active low-pressure cell over the lower Bay of Bengal will intensify to the tropical depression during 22 - 24 May. It is expected to make landfall over northeastern of India and Bangladesh during 25 - 26 May. The storm is no direct effect on Thailand’s weather. The southwest monsoon prevailing over the Andaman Sea, western part of Thailand and the Gulf is strengthening. More rains and scattered heavy rains while isolated very heavy rains are likely in the country. During 23 - 26 May, the rather strong wind and waves are likely 2-3 meters high in the upper Andaman Sea and above 3 meters in thundershowers while about 2 meters high in the lower Andaman Sea and above 2 meters high in thundershowers. In the Gulf, the waves have about 1 meter high, 1-2 meters offshore and above 2 meters high in thundershowers. All ships should proceed with caution and keep off thundershowers. Small boats in the upper Andaman Sea keep ashore. Please stay tuned for the weather update.
This advisory is in effect on 21 May 2024, at 5.00 p.m.
This next issue will be published on 22 May 2024, at 5.00 a.m.
(Signed) Kornravee Sitthichivapak
(Miss Kornravee Sitthichivapak)
Director-General
Thai Meteorological Department
Verified copy
(C. Jamphon)
Director of Weather Forecast Division
