Nationwide mobile test alert being sent tonight, expect a 'loud sound'

The annual nationwide test of New Zealand's Emergency Mobile Alert system is happening tonight. 

Person using their cell phone. Source:

The alert will be sent out to around four million Kiwis' phones between 6pm and 7pm.

Anyone who has a mobile phone that is capable of receiving the alerts can expect to hear a loud sound after which a notification will pop up.

The test alert will link to the Civil Defence website, where people can choose to fill out a survey about how they experienced the alert.

Last year six in ten New Zealanders received the alert, and that number is expected to be higher this time round.