Announcement No. 5 Warning of Summer Storm Check Provinces at Risk of Heavy Rainfall

The Meteorological Department issued Announcement No. 5 warning of a "summer storm" in upper Thailand, effective until 6 Mar 2026. Check the provinces at risk to prepare for heavy rain and strong winds.

On 4 Mar 2026, the websiteof the Meteorological Departmentissued Announcement No. 5 regarding the summer storm in upper Thailand (effective until 6 Mar 2026), stating that a summer storm will develop in upper Thailand, beginning in the northeast region. The eastern, central regions including Bangkok and its vicinity, and the northern region will be affected subsequently.

The storm will feature thunderstorms, strong gusty winds, hail in some areas, heavy rain in certain locations, and lightning in some places. This is due to a high-pressure area, or cold air mass from China, moving to cover the northeast and the South China Sea, causing southerly andsoutheasterly windsto carry moisture from the South China Sea over the northeast, east, and upper Gulf of Thailand, while upper Thailand experiences hot weather.

Residents in these areas are advised to beware of dangers from the summer storm by avoiding open spaces, large trees, unstable structures, and billboards. Farmers should reinforce fruit trees and prepare to protect agricultural produce and livestock from potential damage. Also, maintain health during this weather change. The public is urged to follow announcements from the Meteorological Department and can access information on their website,http://www.tmd.go.thor by calling 0-2399-4012-13 and 1182, available 24 hours.

Provinces expected to be affected by thunderstorms and strong gusty winds

4 March 2026

High risk

• Northeast: Yasothon and Amnat Charoen provincesSurin and Sisaket provincesUbon Ratchathani, Khon Kaen, Maha Sarakham, Chaiyaphum, and Nakhon Ratchasima provinces
• East: Prachinburi and Sa Kaeo provinces

Moderate risk

• North: Chiang Rai, Nan, Uttaradit, Phitsanulok, and Phetchabun provinces
• Northeast: LoeiNong Bua Lamphu and Nong Khai provincesBueng Kan, Udon Thani, Sakon Nakhon, Nakhon Phanom, Mukdahan provincesKalasin and Roi Et provincesand Buriram provinces
• East: Nakhon Nayok, Chachoengsao, Chanthaburi, and Trat provinces
• Central: Lopburi and Saraburi provinces

5 March 2026

High risk

• North: Nan, Uttaradit, Sukhothai, Phitsanulok, and Phetchabun provinces
• Northeast: Loei, Chaiyaphum, and Nakhon Ratchasima provinces
• Central: Nakhon Sawan, Lopburi, and Saraburi provinces
• East: Nakhon Nayok, Prachinburi, and Sa Kaeo provinces

Moderate risk

• North: Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Phrae, and Phichit provinces
• Northeast: Nong Bua Lamphu, Khon Kaen, and Buriram provincesSurin and Sisaket provincesand Ubon Ratchathani province
• Central: Sing Buri, Ang Thong, and Phra Nakhon Si Ayutthaya provinces, including Bangkok and its vicinity
• East: Chonburi, Rayong, Chanthaburi, and Trat provinces

6 March 2026

High risk

• Central: Phra Nakhon Si Ayutthaya province, including Bangkok and its vicinity

Moderate risk

• North: Mae Hong Son, Chiang Mai, Lamphun, Lampang, Tak, Sukhothai, and Kamphaeng Phet provinces
• Northeast: Yasothon and Amnat Charoen provincesBuriram, Surin, and Sisaket provincesand Ubon Ratchathani province
• Central:Nakhon Sawan and Uthai Thani provincesChainat, Sing Buri, Ang Thong, Kanchanaburi, Suphan Buri, Ratchaburi, Nakhon Pathom, Samut Songkhram, and Samut Sakhon provinces
• East: Nakhon Nayok, Chachoengsao, Chonburi, and Rayong provinces
• South: Phang Nga, Phuket, Krabi, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, and Satun provinces