Water agency SNWA says heavy rain on 26-27 September may hit Bangkok, the Central, Eastern and Western regions. Releases from Bhumibol and Sirikit dams are being cut to ease downstream flows, and the Chao Phraya barrage release will be held at no more than 2,300 cubic metres a second, keeping the upstream level at about +17.00 to +17.50 m. Water may rise along the river in low-lying areas outside the dikes, and local authorities are warning residents in advance. Five flood-retention fields already hold 187 million cubic metres. If your shop, warehouse or workshop sits in a low-lying or flood-prone spot near the Chao Phraya, move stock up, check pumps and sandbags, and watch for local alerts this week.