Civil Defence tsunami sirens will sound across Auckland soon as part of a biannual test.
From noon on Sunday, September 30, the sirens will sound for one minute each and there will be 15 seconds between each set.
"It's important to regularly test the sirens to make sure they are working and so that Aucklanders know what they sound like," says Sarah Sinclair, acting director Auckland Emergency Management.
In a real emergency, the tones would sound for longer.
"There is no cause for alarm when the sirens are tested and the public aren't required to do anything."