Thailand Warns 15 Provinces of Flash Floods as Tropical Storm Fengshen Approaches

Key facts

• Tropical storm Fengshen is expected to bring heavy to very heavy rain to southern Thailand from Oct 23 to 26.
• The Department of Disaster Prevention and Mitigation (DDPM) issued warnings for 14 southern provinces and Prachuap Khiri Khan.
• Provinces at risk include Phuket, Surat Thani, Nakhon Si Thammarat, Songkhla, and Yala.
• A moderate monsoon trough passing over the central south is contributing to the storm's impact.
• Local authorities are instructed to monitor rainfall, river flows, and reservoir conditions closely.
• Residents can receive real-time alerts via the THAI DISASTER ALERT app, Line ID @1784DDPM, or hotline 1784.

Storm Alert for Southern Thailand

Thailand’s Department of Disaster Prevention and Mitigation (DDPM) has issued a warning for 15 provinces, placing them on high alert for flash floods, mountain run-off, and waterlogging as tropical storm Fengshen approaches. The storm is expected to affect the region between October 23 and 26, bringing thunderstorms to parts of the northeast and heavy to very heavy rain in southern areas. The Meteorological Department’s advisory, released on October 22, attributes the severe weather to a moderate monsoon trough passing over the central south. Low-lying areas are particularly vulnerable to flash floods and run-off, officials said.

Provinces Under Close Watch

The warning covers one province in the central region—Prachuap Khiri Khan—and 14 provinces in the southern region: Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Pattani, Yala, Narathiwat, Ranong, Phang Nga, Phuket, Krabi, Trang, and Satun. These areas are expected to experience the most intense rainfall and potential flooding. Phuket, a major tourist destination, is among the provinces at risk, raising concerns for both residents and visitors. The DDPM has instructed local authorities to closely monitor rainfall levels, river flows, and reservoir conditions throughout the storm period.

Preparedness and Public Communication

Local authorities have been directed to issue timely warnings to residents through all available communication channels, including village radio towers, community radio, local leaders, and social media. The goal is to ensure that people in at-risk areas are informed and prepared for possible emergencies. Provinces are also urged to take proactive flood-prevention measures, such as deploying disaster-response machinery in advance to high-risk areas to enable swift assistance. All agencies are to coordinate systematically to provide emergency aid and post-disaster recovery support to affected communities.

Advice for Residents

Residents in flood-prone areas are advised to stay updated on weather forecasts, flood alerts, and official announcements. They should prepare for possible emergencies by securing property and having emergency supplies ready. For real-time information, the public can follow warnings via the THAI DISASTER ALERT app, contact Line ID @1784DDPM, or call the 24-hour hotline 1784 for assistance. The DDPM emphasizes that timely preparation can reduce risks and save lives.

Wider Context and Regional Impact

Tropical storm Fengshen is the latest in a series of weather systems affecting Southeast Asia during the monsoon season. Thailand’s southern region, with its extensive coastline and mountainous terrain, is particularly susceptible to flash floods and landslides during heavy rains. The storm’s arrival coincides with the tail end of the rainy season, which typically sees increased rainfall from October to November. The DDPM’s proactive warning reflects lessons learned from past disasters, where early alerts and community preparedness significantly mitigated damage.

Outlook and Next Steps

The storm is expected to weaken after October 26, but residual flooding and runoff may persist in low-lying areas. Authorities will continue to monitor conditions and provide updates as the situation evolves. Residents and travelers in the affected provinces are urged to remain vigilant and follow official guidance. The DDPM has pledged to coordinate relief efforts and ensure that affected communities receive necessary support in the aftermath of the storm.

The bottom line

• Tropical storm Fengshen threatens 15 Thai provinces with flash floods and heavy rain from October 23 to 26.
• The DDPM has activated emergency protocols, including pre-deployment of machinery and multi-channel warnings.
• Residents can access real-time alerts via the THAI DISASTER ALERT app, Line, and a 24-hour hotline.
• Phuket and other tourist destinations are among the high-risk areas, potentially affecting travel plans.
• The storm is driven by a moderate monsoon trough, typical for the late rainy season in southern Thailand.
• Proactive measures and community preparedness are emphasized to reduce the impact of potential flooding.