Floodwaters from the Nan River, after up to 380 cm of rain on Wednesday, are moving south from Pua and Tha Wang Pha into Muang, Phu Phiang and Wiang Sa districts. Water in Muang was 10-50 cm and expected to drain by Thursday evening; Wiang Sa is expected to peak around 2pm Thursday, though its main economic zone is protected by flood walls. Nan Hospital is closed until Saturday, with emergency care only at a field hospital. If you run a business in Nan, check stock and equipment for flood damage, plan for closed schools and reduced customer traffic in Muang, and check local officials for food and water support.