
The warning was for Mae Hong Son, Chiang Mai, Chiang Rai, Nan, Phayao, Lamphun, Lampang, Phrae, Uttaradit, Sukhothai, Tak, Phitsanulok, Phetchabun, Loei, Nong Bua Lamphu, Udon Thani, Nong Khai, Beung Kan, Sakhon Nakhon, Nakhon Phanom, Trat, Chanthaburi, Ranong and Phang Nga.
The strong southwest monsoon over the Andaman Sea and the Gulf of Thailand resulted in waves 23 metres high, and ships were advised to be cautious and small boats to stay ashore.