Book excerpt: The Emergency Alert System (EAS) is built on a structure conceived in the 1950¿s when over-the-air broadcasting was the best-available technol. for widely disseminating emergency alerts. It is one of several federally managed warning systems. The NOAA/NWS weather radio system has been upgraded to an all-hazard warning capability. The Dept. of Homeland Security is implementing a program that will disseminate nat. alert messages over digital broadcast airwaves, using satellite and public TV broadcast towers. This program is called the Integrated Public Alert and Warning System (IPAWS). Contents of this report: EAS Admin.; NOAA Weather Radio; All-Hazard Warning Tech.; Public Alert Warning System: The WARN Act. A print on demand report.