At noon on Sunday, Auckland Emergency Management (AEM) will be testing the tsunami siren network across the Auckland region, Newshub reports. “There is no cause for alarm during the testing and no action is required,” AEM said. “We will only be testing the siren network, not all forms of alerts.” The Auckland tsunami siren network is tested twice a year at the change of daylight saving at midday. You can hear what the test siren will sound like here.