The Thai Meteorological Department announced on August 17 its fifth heavy rain alert (Warning 159/2026) for August 18-21, affecting predominantly the North and Northeast as a monsoon trough sweeps across these regions combined with a vigorous southwest monsoon over the Andaman Sea and Thailand. Residents are warned to watch for severe to very heavy rainfall and accumulated precipitation that may cause flash floods and mudslides, especially in foothill and low-lying areas. Travel through flood-prone routes, particularly in basins, should be avoided as water may accumulate rapidly. Strong winds and high waves of 2-3 metres are forecast for the upper Andaman Sea from August 19-21, exceeding 3 metres in thunderstorm zones. The lower Andaman Sea and upper Gulf of Thailand expect waves around 2 metres, rising above 2 metres during storms. Fishing boats are urged to navigate carefully and avoid thunderstorm areas; small vessels in the upper Andaman should remain ashore during this period. The public is advised to plan activities and travel carefully. Updates are available via the Thai Meteorological Department website at http://www.tmd.go.th or by calling 0-2399-4012-13 and 1182. The next bulletin will be issued on August 18 at 05:00.

Affected provinces by date:

August 18: Extremely heavy rain in Bueng Kan and Nakhon Phanom (Northeast), Trat (East). Heavy rain in Mae Hong Son, Chiang Mai, Chiang Rai, Phayao, Nan, Lampang, Phrae, and Tak (North); Nong Khai, Udon Thani, Sakon Nakhon, Kalasin, Mukdahan, Roi Et, Yasothon, Amnat Charoen, Surin, Si Sa Ket, and Ubon Ratchathani (Northeast); Kanchanaburi and Saraburi (Central); Nakhon Nayok and Chanthaburi (East).

August 19: Extremely heavy rain in Chiang Mai, Chiang Rai, Phayao, Nan, Phrae, and Lampang (North); Nong Khai, Bueng Kan, Nakhon Phanom, Sakon Nakhon, Mukdahan, and Kalasin (Northeast); Trat (East). Heavy rain in Mae Hong Son, Lampoon, Uttaradit, Sukhothai, Tak, Phitsanulok, and Phetchabun (North); Loei, Nong Bua Lamphu, Udon Thani, Khon Kaen, Roi Et, Yasothon, Amnat Charoen, Si Sa Ket, and Ubon Ratchathani (Northeast); Saraburi, Kanchanaburi, and Ratchaburi (Central); Nakhon Nayok, Prachuap Khiri Khan, and Chanthaburi (East).

August 20: Heavy rain forecast for select areas.

The Thai Chamber of Commerce, headed by Pon Aramwattananon alongside Vice Chairman Chanin Cholisraarongse, led a private-sector delegation to Russia accompanying Deputy Prime Minister and Foreign Minister Siwarak Poungketkeaw. The delegation aims to expand trade, investment, and business opportunities between the two countries. During the visit, Thai business leaders met with Russian economic organizations including the Russian Chamber of Commerce and Industry and the Russian-Thai Business Council to discuss sector linkages and preparations for the Russian-Thai Investment Forum 2026, scheduled for October 29-31, 2026, in Bangkok. The delegation also participated in the Joint Russian-Thai Commission on Bilateral Cooperation, where Thai representatives outlined measures to strengthen balanced economic cooperation between the nations.

According to Pon, Thailand and Russia enjoy a long-standing relationship spanning people-to-people ties, tourism, and trade. Last year, bilateral trade reached approximately $1.7 billion, with the first half of this year already totaling around $1 billion and projected to reach $2.2 billion by year-end. However, this does not reflect true potential, particularly in agriculture and food exports, which offer significant growth opportunities.

The Thai private sector believes Thailand should accelerate negotiations for a Thai-EAEU Free Trade Agreement to establish a systematic economic cooperation framework, reduce tariff and non-tariff barriers, and facilitate trade, investment, logistics, and supply-chain connectivity with EAEU members: Russia, Armenia, Belarus, Kazakhstan, and Kyrgyzstan. Pon stated that Russia is not merely an important market but a gateway to the EAEU market of over 185 million people. A successful Thai-EAEU FTA would open new markets for Thai goods and services while providing access to raw materials, energy, fertilizers, and technology vital to Thai manufacturing.

Both sides emphasize reciprocity and mutual benefit in trade cooperation. Thailand seeks to import 1-2 million tons annually of urea fertilizer from Russia to strengthen input security and ease the burden on Thai farmers, with Russia ready to support long-term contracts. Thailand offers high-quality agricultural and food products, particularly canned tuna and animal feed, while Russia supplies fertilizers, wheat flour, king crab, sunflower oil, beef, and premium seafood to meet Thai market demand.

KHON KAEN — On 17 August 2026, forensic officers inspected a construction site for a new staff residence at Khon Kaen Central Prison after workers uncovered 30 bags containing methamphetamine while excavating the ground.

Khon Kaen Central Prison Director Phairat Khaminthakul, Muang Khon Kaen Police Chief Pol. Col. Yotsawat Kaewsuebthannij, Muang Khon Kaen district officials and officers from the Regional Forensic Science Center 4 inspected the site, located south of the prison.

The drugs were discovered after a construction worker operating an excavator was clearing and levelling the land in preparation for construction. The machine uncovered 30 opaque plastic bags buried underground, 24 blue bags and six pink bags.

Authorities cordoned off the areas where the bags were initially found and where the excavator later dragged the bags containing the methamphetamine, around 50 metres from the original discovery point.

Investigators also questioned construction workers, the excavator operator and prison officials responsible for security and overseeing the construction project.

Pol. Col. Yotsawat said the drugs were found along the edge of the construction area, about 10 metres from the prison wall surrounding the inmates' detention area. The site had previously been overgrown and used for dumping rubbish. Workers had been clearing the rubbish and filling the area with soil when they uncovered the drugs.

"We need to determine whether the drugs are old or newly placed. We are questioning all relevant witnesses and checking CCTV footage," Pol. Col. Yotsawat said.

The discovery site is opposite one of the prison's CCTV cameras, but the camera is facing in a different direction.

Authorities are considering two main possibilities: that the drugs were deliberately left there by someone with malicious intent, or that they were buried in soil brought in to fill the site. Investigators will determine the cause through further examination.

Prison director Phairat said all possibilities must be investigated. The prison has coordinated with the contractor after handing over the site to a private company to build a four-storey staff accommodation building with 32 rooms. The site was handed over in February, while construction under the contract began in July.

Following the discovery, authorities will completely seal off the construction area to prevent construction workers from coming into contact with inmates who are taken outside the prison for community service. Unauthorised people will also be barred from entering the area.

"We have patrol officers checking the area around the prison every hour, while officers remain stationed at the prison's watchtowers around the clock," Phairat said.

Security measures will now be tightened, including strict checks on everyone entering and leaving the prison, designated parking areas and waiting zones for visitors, as well as areas used as residences by prison officials and staff. The prison also conducts thorough searches.

On August 17, 2025, Phuket's Patong Police Station received notification from Patong Hospital requesting an investigation into a fatal drowning. The victim was identified as 44-year-old Chinese national Mr. Ye, who was staying at a hotel in Phuket with his family from August 16 to 22.

Ye had entered the hotel's swimming pool, which is approximately 2 meters deep. His daughter later found him standing motionless in the water and called for assistance. Foreign swimmers nearby immediately responded and pulled his body to the edge of the pool, where they performed chest compressions and called an ambulance.

Despite medical team efforts, Ye was pronounced dead at 11:30 a.m. at Patong Hospital. Dr. Suksan Kamnuansilp, the attending physician, conducted a preliminary autopsy. The body was transferred to the forensic pathology division at Vachira Hospital in Phuket for official autopsy procedures. Police documented the scene, collected evidence, and notified the Chinese Embassy in Thailand to proceed with appropriate protocols.

Following media and social media concerns about the release of Lao Tua Saen Lee, a former major drug offender, the Corrections Department released a detailed statement on August 17, 2026. The 85-year-old was arrested on October 11, 2015, and sentenced to life imprisonment on December 12, 2019, with a 2.5 million baht fine. While incarcerated, he maintained good conduct and received six royal pardons between 2020 and 2026, with his sentence eventually reduced to 8 years, 3 months, and 28 days due to the pardons and age-related reductions for prisoners over 70. After serving 9 years, 10 months, and 8 days from his arrest to his release on August 14, 2026, he was legally discharged. The department stated that the sentencing and release followed all legal procedures and the rule of law applied equally to all inmates. The Corrections Department acknowledged public concerns and said it would review guidelines for managing sentences, especially for capital crimes, life sentences, and cases affecting public security. The department has coordinated with drug enforcement agencies and local administrative authorities to monitor Lao Tua following his release.

Poonpong Nainapragan, director-general of the Department of Business Development under the Commerce Ministry, disclosed details on foreign business investment approvals in Thailand under the Foreign Business Operations Act of 1999. In July 2025 alone, 96 foreign businesses were approved to operate with a combined investment of 31.594 billion baht, predominantly from investors in China, Singapore, and the United States.

For the seven-month period from January to July 2025, Thailand approved 736 foreign business applications, a 26% increase year-on-year, with total investment reaching 219.208 billion baht, up 37% compared to the same period in 2024.

The top five source countries in the first seven months of 2025 were: China with 133 businesses accounting for 18% of foreign investment at 38.603 billion baht; the United States with 121 businesses at 16% and 6.226 billion baht; Singapore with 97 businesses at 13% and 61.112 billion baht; Japan with 94 businesses at 13% and 45.085 billion baht; and Hong Kong with 72 businesses at 10% and 14.077 billion baht. Other countries accounted for 219 businesses at 30% with 54.105 billion baht in investment.

Investment in the Eastern Economic Corridor zone totaled 220 projects, or 30% of all foreign investment in Thailand, a 25% increase year-on-year, valued at 85.615 billion baht or 39% of all foreign investment. Investors included 80 Chinese businesses investing 30.042 billion baht, 31 Japanese businesses at 22.636 billion baht, 26 Hong Kong businesses at 4.803 billion baht, and 83 other foreign investors at 28.134 billion baht.