Integrated Public Alert and Warning System

Integrated Public Alert and Warning System (IPAWS) is FEMA's national system for local alerting that provides authenticated emergency and life-saving information to the public through mobile phones using Wireless Emergency Alerts, to radio and television via the Emergency Alert System, and on the National Oceanic and Atmospheric Administration's Weather Radio. It is an alternative approach to Emergency Plan Sirens using phone notifications. Like Amber Alerts.

• https://www.fema.gov/emergency-managers/practitioners/integrated-public-alert-warning-system