Bangkok: The Meteorological Department reported that Tropical Storm Nong Fa has weakened into a strong low-pressure area covering the northeastern region since last night. It is beginning to affect the northern region, particularly the lower part of the region, today. This, coupled with the strengthening southwest monsoon, will bring widespread rain. 43 provinces are warned of heavy to very heavy rain in some areas for the next 1-2 days.
According to Thai News Agency, Mr. Somkuan Tonjan, Director of the Meteorological Department's Weather Forecasting Division, revealed that Tropical Storm Nong Fa has weakened into a strong low-pressure area and has been covering the upper northeastern region of Thailand since the night of August 30th before moving over the northern region today. This has resulted in continuous and very heavy rain in many areas, particularly the lower northern region, which has been the most affected today.
Satellite and weather radar images this morning show rain clouds from a low-pressure area still covering the lower northern region, including Phitsanulok, Sukhothai, Phetchabun, Phichit, Uttaradit, Kamphaeng Phet, and Phayao. These areas pose a risk of flash floods, flash floods, and landslides, particularly in areas with accumulated rainfall from the previous day, such as Sukhothai and Phitsanulok provinces.
According to the announcement of the Meteorological Department, there are 43 provinces in the risk area of heavy rain, including:
Northern Region (17 provinces): Nan, Uttaradit, Phitsanulok, Phichit, Phetchabun, Chiang Rai, Phayao, Phrae, Lampang, Sukhothai, Kamphaeng Phet, Chiang Mai, Lamphun, Tak, Mae Hong Son
Northeastern Region (13 provinces): Loei, Nong Bua Lamphu, Chaiyaphum, Khon Kaen, Maha Sarakham, Roi Et, Yasothon, Ubon Ratchathani, Sisaket, Mukdahan, Amnat Charoen, Nakhon Ratchasima, Buriram
Central Region (7 provinces): Nakhon Sawan, Saraburi, Lopburi, Kanchanaburi, Uthai Thani, Chainat, Phra Nakhon Si Ayutthaya
Eastern Region (2 provinces): Chanthaburi, Trat
Southern Region (4 provinces): Surat Thani, Chumphon, Ranong, Phang Nga
As the southwest monsoon prevailing over the Andaman Sea and the Gulf of Thailand is relatively strong, causing waves of 2-3 meters high, the upper Andaman Sea and the upper Gulf of Thailand will experience heavy rain and strong winds. Small boats are advised to stay ashore from August 31 to September 3, 2025.
Although Tropical Storm Nong Fa has weakened, Thailand will continue to experience scattered rainfall over the next week, particularly in the lower northern region, the central and lower northeastern region, the central region, and Bangkok and its vicinity, due to the influence of the monsoon trough passing through these areas.
The Meteorological Department asks the public to closely monitor warning announcements.