{"id":10427,"date":"2025-11-25T15:29:28","date_gmt":"2025-11-25T08:29:28","guid":{"rendered":"https:\/\/fdi.co.th\/?p=10427"},"modified":"2025-12-04T10:24:33","modified_gmt":"2025-12-04T03:24:33","slug":"%e0%b8%99%e0%b9%89%e0%b8%b3%e0%b8%97%e0%b9%88%e0%b8%a7%e0%b8%a1%e0%b8%ab%e0%b8%b2%e0%b8%94%e0%b9%83%e0%b8%ab%e0%b8%8d%e0%b9%88-%e0%b9%81%e0%b8%a5%e0%b8%b0%e0%b8%ad%e0%b8%b8%e0%b8%97%e0%b8%81","status":"publish","type":"post","link":"https:\/\/fdi.co.th\/en\/news\/%e0%b8%99%e0%b9%89%e0%b8%b3%e0%b8%97%e0%b9%88%e0%b8%a7%e0%b8%a1%e0%b8%ab%e0%b8%b2%e0%b8%94%e0%b9%83%e0%b8%ab%e0%b8%8d%e0%b9%88-%e0%b9%81%e0%b8%a5%e0%b8%b0%e0%b8%ad%e0%b8%b8%e0%b8%97%e0%b8%81\/","title":{"rendered":"\u201cHat Yai flooding\u201d and severe floods \u2014 revealing the causes\u2026 why the flooding is so severe"},"content":{"rendered":"
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“Hat Yai flooding<\/span>“\u00a0<\/span><\/b>\u0e40\u0e1b\u0e34\u0e14\u0e2a\u0e32\u0e40\u0e2b\u0e15\u0e38\u2026\u0e17\u0e33\u0e44\u0e21\u0e19\u0e49\u0e33\u0e17\u0e48\u0e27\u0e21\u0e2b\u0e19\u0e31\u0e01\u00a0<\/b>\u00a0\u00a0<\/b><\/h2>

The latest situation in Hat Yai District, Songkhla Province, is a major flood crisis that has been assessed as \u201cthe worst in 25 years\u201d since the 2000 flooding. In many areas, water levels are so high that they have affected homes, key economic zones, and the city\u2019s main transportation routes, causing widespread impacts on daily life, the local economy, and the transportation system.<\/span><\/p>

This incident is the result of a combination of extreme weather conditions, the area\u2019s geographical characteristics, and gaps in water management. Government agencies and academics have consistently reported that this year\u2019s heavy rainfall is at an \u201cexceptionally abnormal\u201d level, exceeding the capacity of current water retention systems and existing infrastructure.<\/span><\/p>

Overview of the \u201csudden torrential rainfall\u201d (rain bomb) event<\/b><\/h2>

Data from the Meteorological Department\u2019s rain gauge stations indicate that the accumulated rainfall over three days in the Hat Yai area exceeded <\/span>595\u2013600 \u0e21\u0e34\u0e25\u0e25\u0e34\u0e40\u0e21\u0e15\u0e23 Considered the highest in several decades, the intensity of the rainfall on the night of November 21, particularly in the Khao Hong \u2013 Na Mom area, led to what is called a \u201csudden torrential rainfall\u201d (rain bomb), with massive amounts of water rushing rapidly into the city.<\/span><\/p>

Key areas, such as Kim Yong Market, Niphat Uthit Road, Sanehanuson Road, and the Hat Yai Municipality district, were rapidly flooded. Many roads were cut off, transportation was disrupted, and shops had to temporarily close. Meanwhile, some residents had to evacuate to higher ground as water levels at certain points continued to rise.<\/span><\/p>

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The main causes of this flooding event<\/b><\/h2>

1. Abnormally heavy rainfall due to La Ni\u00f1a conditions<\/b><\/h3>

Meteorologists and the Meteorological Department indicate that the year 2025 is in a cycle <\/span>La Ni\u00f1a La Ni\u00f1a has caused high humidity in many areas of Thailand and increased the likelihood of heavy rainfall, particularly in the lower southern region, which is influenced by the northeast monsoon and stronger-than-usual monsoon troughs. This led to \u201crain bomb\u201d events (intense rainfall over a short period) on the night of November 21, 2025, around Khao Hong, Na Mom District, before flowing into Hat Yai city.<\/span><\/p>

2. Global warming\u00a0<\/b><\/h3>

which is significantly related<\/span>\u00a0 <\/b>Although the main factors of flooding in Hat Yai remain heavy rainfall, low-lying terrain, and the drainage system, <\/span>climate change<\/span><\/i> has caused extreme rainfall and flash floods to occur more frequently and intensely than in the past, directly contributing to this event. <\/span>In the case of Hat Yai Rainfall of 595\u2013600 mm over three days is considered <\/span>\u201cextreme rainfall levels\u201d<\/span><\/i> (extreme rainfall), which aligns with the IPCC report finding that such rainfall is expected to increase by 20\u201330% in Southeast Asia due to global warming.<\/span><\/p>

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3. Hat Yai is a \u201cbasin\u201d that receives water from multiple directions<\/b><\/h3>

Hat Yai is a low-lying area that receives water from key canals, including<\/span><\/p>