The Thai Meteorological Department warns of heavy to very heavy rain in the North and Northeast first, spreading to Central, Bangkok, the East and the South over the next few days. Flash floods and mountain runoff are the main risk. A low-pressure area in the South China Sea may become a tropical storm around 11–13 Sep. If you run a shop, workshop or delivery route in low-lying or flood-prone areas, plan stock, deliveries and staff travel for 10–13 Sep, and keep an eye on the forecast. Sea waves may reach 2 m or more, so check any shipping or boat trips.