Australia tests new national emergency siren on phones July 27

Australia is set to conduct the first nationwide test of its new emergency warning system, AusAlert, on Monday, July 27, 2026, at 2 p.m. AEST. The system is designed to send critical emergency messages directly to mobile devices, overriding silent or do-not-disturb settings. This test aims to ensure the system functions correctly before its official national launch in October.

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On Monday 27 July 2026, a test alert will be sent to all mobile devices in Australia. This includes most phones, and some smart watches and tablets.

During the test, most phones, smartwatches, and tablets across the country will emit a 10-second siren and display a "TEST MESSAGE - NO ACTION IS REQUIRED" notification. The sound will be distinct and attention-grabbing but not as intense as a fire alarm. The timing of the test will vary across time zones, with 2 p.m. AEST for eastern states, 1:30 p.m. for the Northern Territory and South Australia, and 12 p.m. in Western Australia.

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What people should expect to hear is a siren that will last for about 10 seconds.

The AusAlert system is a direct recommendation from the royal commission that investigated the devastating 2019-20 black summer bushfires. It replaces the previous SMS-based alerts, which were found to suffer from significant delays and unreliability during major disasters due to network congestion. Federal Emergency Management Minister Kristy McBain highlighted that some residents in her electorate did not receive crucial text alerts during the bushfires. The new system promises faster, more reliable communication, capable of sending both nationwide and localized "geofenced" alerts for various emergencies, including natural disasters and public health warnings like boil-water advisories.

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It will be noticeable, but it won’t won’t be too over the top.