Residents across 48 provinces, including Bangkok, have received warnings about likely heavy rain and potential flash floods starting Friday, September 13, through Wednesday, September 18.
The Office of National Water Resources (ONWR) announced via its Facebook page that a northern monsoon trough will shift southwards, affecting upper Thailand from September 13 to September 18.
Concurrently, a strengthening southwest monsoon will bring increased rainfall, including some heavy showers.
The ONWR has issued advisories for communities prone to flooding, urging them to prepare for possible runoff and sudden floods during this time.
The regions anticipated to experience flash floods from this Friday to the following Wednesday include 13 provinces in the North, such as Chiang Rai, Chiang Mai, Mae Hong Son, Tak, Phayao, Nan, Phrae, Uttaradit, Phitsanulok, Kamphaeng Phet, Phichit, Nakhon Sawan, and Phetchabun.
It will also affect 13 provinces in the Northeast, which are Loei, Nong Khai, Bueng Kan, Nakhon Phanom, Khon Kaen, Maha Sarakham, Roi-Et, Yasothon, Nakhon Ratchasima, Buri Ram, Surin, Si Sa Ket, and Ubon Ratchathani.
Eight provinces in the Central Plain are Lop Buri, Saraburi, Bangkok, and its five surrounding provinces. Six provinces in the East are Nakhon Nayok, Prachin Buri, Chon Buri, Rayong, Chanthaburi, and Trat.
In the South, eight provinces will be affected, including Chumphon, Ranong, Phangnga, Phuket, Krabi, Surat Thani, Trang, and Satun.
The Disaster Prevention and Mitigation Department revealed on Wednesday that recent floods and landslides, triggered by the remnants of former typhoon Yagi, have resulted in four fatalities in northern Thailand.
Two of these deaths were due to a landslide in Chiang Mai province, and two others occurred in Chiang Rai, near the Myanmar border.
The Meteorological Department has forecasted continued heavy rainfall through next Tuesday, with ongoing risks of flash flooding.
“From September 13 to 17, please exercise caution due to the anticipated heavy to very heavy rain,” the weather forecaster advised.
Since the onset of the rainy season, heavy rain-related disasters have claimed a total of 29 lives, as reported by the national emergency operations center.