Bangkok's Metropolitan Administration (BMA) declared a disaster‑affected zone on Monday after the city received 320 mm of rain over two days, submerging low‑lying areas and forcing 5,901 residents into 234 shelter centres.
The deluge stalled traffic on major arteries, left the BTS line out of service, and cut off electricity and water to neighbourhoods such as Bang Kapi, where residents like 32‑year‑old Nattapon Mankean lost power and had to evacuate with two cats.
Interior Minister Unsit Sampuntharat said the ministry was deploying mobile kitchens and boats to deliver three meals a day to all residents for at least seven days, while Aat Pisanwanich of Rangsit University warned that the floods could shave 0.3 percentage points off Thailand's 2026 GDP growth and cause at least 11 billion baht ($327 million) in nationwide damage.
The rains are expected to continue, with 80,000 residents still trapped in flooded homes, and officials are preparing to assess damage after the waters recede, while the Ministry of Finance will convene a meeting next week to discuss fiscal relief.