SCDF’s Public Warning System siren to sound on Sept 15
Upon hearing the signal, people should tune in immediately to any local radio or TV channels for a Total Defence message.
On September 15, the Singapore Civil Defence Force (SCDF) will activate the island-wide Public Warning System with an "Important Message" siren for a minute at 6:20pm, according to a September 3 announcement. This signal will also be broadcast on smartphones with the SGSecure mobile app installed, and will be accompanied by a short text message.
To receive the alert on mobile phones, users must enable notifications and alerts in the SGSecure app. Singtel network users will also get an SG Alert. During an emergency, the SCDF advises listening to a Total Defence message on local radio or TV channels. The annual siren and broadcast are part of SCDF's public education efforts to familiarize citizens with the system and highlight appropriate responses.
The Public Warning System is used to alert the public about air, land, sea attacks, as well as natural and other man-made disasters. The siren is sounded at 6:20pm on Total Defence Day in February and September 15 each year. In 2026, the siren was sounded early on February 1 for the first time to remind citizens that disruptions can happen at any time.
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