Public Warning System NewsLatest News On Public Warning System Public warning system sirens to sound on Sept 15: SCDF13/9/2023 4:11 pm SCDF to sound public warning system sirens islandwide on Total Defence Day13/2/2023 7:49 pm Public warning system sirens to sound on Feb 15 in support of Total Defence Day9/2/2023 3:07 pm SCDF to sound public warning system sirens on Thursday12/9/2022 2:59 pm SCDF to sound public warning system sirens on Thursday12/9/2022 2:59 pm Public warning system to be sounded islandwide on Feb 1513/2/2022 10:33 pm SCDF to sound islandwide public warning system sirens on Feb 1513/2/2022 2:24 pm Public warning system to be sounded islandwide on Feb 1513/2/2022 1:55 pm SCDF to sound public warning system on Sep 159/9/2021 7:24 pm SCDF to sound public warning system on Sept 1514/9/2020 1:11 am SCDF to sound public warning system on Sep 1513/9/2020 8:56 pm Public warning system to be sounded twice on National Day8/8/2020 2:03 am Public warning system to be sounded twice on National Day as flag is raised, Pledge recited6/8/2020 8:42 pm Public warning system to be sounded islandwide on National Day6/8/2020 7:22 pm NDP2020: Public warning system to be sounded at 10.30am on Aug 9 as flag ceremonies take place at 8 locations28/7/2020 4:09 pm Public warning system sirens to sound islandwide on Sunday: SCDF13/9/2019 3:47 pm SCDF to sound 'Important Message' signal on Total Defence Day13/2/2019 1:56 pm