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On Sunday, 1 February 2026 at 3pm, SCDF will be sounding the “Important Message” signal through the island-wide network of Public Warning System (PWS) sirens. Do not be alarmed by the minute-long sounding exercise.
For the first time, the PWS will sound on 1 February, instead of the usual 15 February at 6:20pm. The one-off change in date is to mark the commencement of Exercise SG Ready 2026, organised by Nexus, MINDEF, in support of Total Defence Day.
The signal will also sound for 20 seconds on all smartphones downloaded with SGSecure mobile app. This will be accompanied by a brief text message on the PWS sounding. To receive the signal and the text message, the app’s notification and alert settings must be enabled.
When you hear the “Important Message” signal, tune in immediately to any local FM radio station or Mediacorp TV channel for a Total Defence message. For more information on the PWS signals, visit go.gov.sg/pws.
To prevent any undue public alarm, we seek your assistance to carry the above information in your news bulletins to remind the public of the PWS sounding.
Issued by:
Corporate Communications Department
Singapore Civil Defence Force