Nan Province Prepares for New Rain Wave August 23

Matichon•Politics•4d ago

Reader Briefing

The Thai government is monitoring Nan province as a new wave of rain is expected to hit the upper Nan river basin on August 23, 2026.

•The government is monitoring flood situations in Nan province following a trend of stabilizing and decreasing water levels.
•Rain is expected to return to the upper Nan river basin on August 23, 2026, specifically in Pua, Song Khwae, Chiang Klang, and Thung Chang districts.
•The Office of the National Water Resources (ONWR) estimates 24-hour accumulated rainfall between 50–70 mm in the affected upper areas.
•Four additional districts—Tha Wang Pha, Mueang Nan, Phu Phiang, and Wiang Sa—must monitor water runoff from the upper regions.

Overview

•On August 22, 2026, Lalida Periswiwattana announced that the government is continuing to monitor the flood situation in Nan province.
•The government warns that rain is expected to return to the upper Nan river basin on August 23, 2026.
•The Office of the National Water Resources (ONWR) estimates accumulated rainfall of 50–70 mm over 24 hours in Pua, Song Khwae, Chiang Klang, and Thung Chang districts.
•Lalida Periswiwattana stated that because soil in some areas still has accumulated moisture, the ability to absorb new rain is reduced and water may flow into streams faster.
•The government is prioritizing preparation for people in foothills, areas near waterways, and low-lying areas to ensure rapid notification.
•Residents in Tha Wang Pha, Mueang Nan, Phu Phiang, and Wiang Sa districts are advised to monitor water masses flowing from the upper regions.
•Relevant agencies have prepared data, notification systems, personnel, and equipment to handle the situation.

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Source: Matichon (Original)

Key Quotes

Lalida Periswiwattana

"Although this wave of rain is expected to be not as high as the previous period, since the soil still has accumulated moisture, the ability to absorb new rainwater will decrease and water may flow into streams faster."

แม้ฝนระลอกนี้คาดว่าจะไม่สูงเท่ากับช่วงที่ผ่านมา แต่เมื่อดินยังมีความชื้นสะสม ความสามารถในการรองรับน้ำฝนใหม่จะลดลง และน้ำอาจไหลลงสู่ลำน้ำได้เร็วขึ้น

Key Entities

Person

Lalida Periswiwattana(ลลิดา เพริศวิวัฒนา)

Deputy Spokesperson for the Prime Minister's Office.

Organization

Office of the National Water Resources (ONWR)(สำนักงานทรัพยากรน้ำแห่งชาติ (สทนช.))

The agency that provided the rainfall assessments for the Nan river basin.

Government(รัฐบาล)ℹ️

The administration monitoring the flood situation and ordering preparations in Nan province.

Place

Nan(น่าน)

The province where the government is monitoring the flood situation.

Pua(ปัว)

A district in the upper Nan river basin that must be monitored on August 23.

Song Khwae(สองแคว)

A district in the upper Nan river basin that must be monitored on August 23.

Chiang Klang(เชียงกลาง)

A district in the upper Nan river basin that must be monitored on August 23.

Thung Chang(ทุ่งช้าง)

A district in the upper Nan river basin that must be monitored on August 23.

Tha Wang Pha(ท่าวังผา)

A district that must monitor water masses from the upper regions.

Mueang Nan(เมืองน่าน)

A district that must monitor water masses from the upper regions.

Phu Phiang(ภูเพียง)

A district that must monitor water masses from the upper regions.

Wiang Sa(เวียงสา)

A district that must monitor water masses from the upper regions.