SINGAPORE - National water agency PUB issued a warning on the morning of March 20 about the potential for flash floods as relentless rain continued across the island overnight.
At around 7.40am, PUB issued a flash floods risk alert for the PIE (towards Changi Airport) after TPE.
“Due to heavy rain, please avoid this location for the next 1 hour,” it said in a post on X.
This marks the second consecutive day that PUB has issued a flash flood risk alert.
The incessant rain was the result of a monsoon surge that started on the morning of March 19 and had lowered temperatures to 23.6 deg C at around noon.
This came after NEA warned about a monsoon surge from March 19 to 21, which may bring temperatures down to as low as 22 deg C amid periods of moderate to heavy showers over Singapore.
As of 6.57am on March 20, the mercury dipped to 22.2 deg C in Newton. Singapore’s lowest temperature in 2025 was 21.6 deg C, recorded on Jan 11 in Newton.
The monsoon surge, known for causing widespread and prolonged rain, is unusual since monsoon surges typically occur earlier in the north-east monsoon season, between December and January. Singapore is currently in the late phase of the monsoon season, which usually lasts until around March.
A monsoon surge occurs when bursts of cold air from the north-east, originating from regions like Central Asia, move over the South China Sea, bringing extensive rainfall, strong winds, and cooler temperatures to Singapore. On average, the Republic experiences two to four monsoon surges annually.
At around 7.40am, PUB issued a flash flood risk alert for the PIE (towards Changi Airport) after TPE.PHOTO: METEOROLOGICAL SERVICE SINGAPORE
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