TMD Warns of Heavy Rain and Floods August 29 - September 2, 2026

Thairath•Society•1d ago

Reader Briefing

The Thai Meteorological Department has issued warning number 5 regarding heavy to very heavy rainfall across upper Thailand from August 29 to September 2, 2026.

•The Thai Meteorological Department warns of heavy to very heavy rain from August 29 to September 2, 2026.
•High-risk areas include the western North, Central, upper and eastern Northeast, and East regions.
•Risks include flash floods and forest runoff, especially in foothills and low-lying areas.
•Waves in the upper Andaman Sea are expected to reach 2-3 meters, exceeding 3 meters in stormy areas.

Overview

•The Thai Meteorological Department issued the announcement on August 28, 2026.
•The Thai Meteorological Department warns of increased rainfall and heavy to very heavy rain from August 29 to September 2, 2026.
•The rainfall is caused by a monsoon trough moving across the North and upper Northeast towards a strong low-pressure cell near the coast of upper Vietnam and the Gulf of Tonkin, combined with a relatively strong southwest monsoon.
•Flash floods and forest runoff may occur, particularly in foothills near waterways and low-lying areas.
•The Thai Meteorological Department warns that waves in the upper Andaman Sea will be 2-3 meters high, and over 3 meters in thunderstorm areas.
•The Thai Meteorological Department advises sailors in the Andaman Sea and Gulf of Thailand to navigate with caution and avoid thunderstorm areas.
•The Thai Meteorological Department advises small boats in the upper Andaman Sea to refrain from leaving shore during the specified period.
•The Thai Meteorological Department urges the public to monitor updates via its website or telephone hotlines 0-2399-4012-13 and 1182.

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Source: Thairath (Original)

Key Entities

Organization

Thai Meteorological Department(กรมอุตุนิยมวิทยา)ℹ️

The agency that issued the weather warning and provides updates via its website and hotlines.

Place

Thailand(ประเทศไทย)ℹ️

The country experiencing increased rainfall and monsoon effects.

Vietnam(เวียดนาม)ℹ️

The country whose upper coast is located near a strong low-pressure cell.

Gulf of Tonkin(อ่าวตังเกี๋ย)ℹ️

The area where a strong low-pressure cell is located.

Andaman Sea(ทะเลอันดามัน)ℹ️

The sea area experiencing strong monsoon winds and high waves.

Gulf of Thailand(อ่าวไทย)ℹ️

The sea area where sailors are advised to navigate with caution.