Central Singapore
Toa Payoh weather
Central heartland. Inland heating and frequent inter-monsoon thunderstorms.
How rain usually arrives here
Toa Payoh is dense central heartland. Inland heating and inter-monsoon thunderstorms are the local pattern. A stalled cell over the central area is how flash floods start. Radar plus nowcast, not the 4-day outlook, for that call.
After lunch in April, May, October and November, use the 2-hour nowcast and the 50 km radar together. The island 24-hour line is too coarse.
Central Singapore
Central towns sit on the inland heating plateau and against the catchment. Inter-monsoon afternoons are thunderstorm country. A stalled red cell over Toa Payoh or Bishan is the usual flash-flood setup.