If for any reason you need to opt out of this service, and do not want your mobile to be alerted (even when on silent), please follow these steps on your mobile device:
Apple
Select Settings and then Notifications
Scroll down to the bottom of the screen to Emergency Alerts
Use the toggle buttons to update your preferences
If your toggle is green, your mobile will be alerted. If your toggle is grey, this indicates the service is not active and your mobile will not be alerted.
Android
Select Settings and search Emergency alerts to quickly find the correct option
Use the toggle buttons in the Broadcast Settings to update your preferences
If your toggle is blue, your mobile will be alerted. If your toggle is grey, this indicates the service is not active and your mobile will not be alerted.