Second test for Orewa’s sirens

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Orewa’s new tsunami sirens were tested for a second time last week.

Auckland Emergency Management (AEM) general manager Kate Crawford said the sirens were activated three times on November 23 and measured for volume and clarity from eight sites around Orewa.

“Staff on the ground reported the sirens were understandable and the siren tone alert was clearly audible from their positions,” she says.

Most people who commented on Hibiscus Matters Facebook page said they heard the siren but found it hard to hear what the voice was saying.

Sound engineers will analyse the data and make any final adjustments needed to maximise the reach of the sirens.

Accoustic testing had to be tried again due to bad weather during a technical test in late September. Kate says this is because the acoustic testing requires a relatively still day to work effectively, although the sirens themselves are not sensitive to wind.


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