The Thai Meteorological Department warns of thunderstorms over 60% of Bangkok, central, northern and eastern areas, with heavy rain in spots, flash floods and overflowing rivers over the next 24 hours. For a business: protect stock and equipment stored at low or near-stream sites, check drainage and delivery routes, and plan for delays. Small boats in the upper Andaman Sea should stay in port (waves 2-3 m). The storm forming near Hainan is forecast to hit southern China, not Thailand.