Radar, lightning and rain gauges: NEA via data.gov.sg (Singapore Open Data Licence). Forecast steps carry the latest radar along its measured motion. Coastline: URA Master Plan 2019 and Natural Earth.
NEA's 2-hour forecast for the city (2:08 pm): Cloudy. 1 lightning strikes within 30 km in the last 30 minutes. Window says: Keep the windows shut. PSI 153 in the South and rising.
NEA's radar updates every 5 minutes. Window repaints it as soft rain cells: green for light rain, through yellow and orange, to red and purple for the heaviest downpours. Lightning strikes in the last 10 minutes show as bolts.
Drag the timeline to see the last half hour and the next hour. The next hour carries the latest radar along the rain's measured movement: a good guide to where showers are heading, not a promise. When a storm is on its way to your place, the map draws its track and when it should arrive.
Window compares NEA's 2-hour forecast with MET Norway's hourly forecast for your area: see today's weather or pick your area.