PUB Issues Flash Flood Warning for Mackenzie Road Amid Severe Afternoon Thundery Showers

PUB warns of flash flood risks at Mackenzie Road on April 21. Heavy thundery showers are expected across Singapore through the afternoon.

By: AXL Media

Published: Apr 21, 2026, 7:19 AM EDT

Source: Information for this report was sourced from The Straits Times

An Immediate Alert for Central Commuters

National water agency PUB took to social media on the afternoon of April 21 to issue an urgent advisory for pedestrians and motorists in the central region. At approximately 12.30pm, the agency identified Mackenzie Road, located near the major artery of Bukit Timah Road, as a high risk zone for flash flooding. The public was strongly urged to stay clear of the area for at least an hour as drainage systems braced for a significant influx of rainwater during the peak afternoon period.

Islandwide Deluge Prompts Heightened Vigilance

The specific warning for Mackenzie Road came as part of a broader weather event affecting the entire city-state. According to PUB, heavy rain was expected to saturate many areas of Singapore between 12.55pm and 2.00pm. This concentrated burst of precipitation often creates rapid runoff in low lying urban areas, necessitating real time monitoring and public safety broadcasts to prevent vehicle stalling or pedestrian entrapment in rising waters.

Seasonal Weather Patterns and Monsoon Transitions

The current surge in rainfall aligns with recent projections from the Meteorological Service Singapore. In a fortnightly advisory issued on April 16, the service indicated that the second half of the month would be characterized by short, thundery showers on most afternoons. These conditions are typical for this time of year, as tropical weather patterns shift, often leading to intense precipitation that can extend well into the evening hours on particularly volatile days.