residents discovered the limitations this week of local emergency notification systems that are supposed to advise of a potentially devastating tsunami. What are wireless emergency alerts? Emergency alerts about imminent threats to safety would go to all cellphone users in an affected area, and may override muting or other blocks on the phone. The CRTC ordered that as of April 6, 2018 all cell providers must give AlertReady the ability to send out LTE messaging alerts on their networks. Will local emergency alerts still matter?

Source: CBC News January 24, 2018 22:41 UTC