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  2. Emergency Alert System - Wikipedia

    en.wikipedia.org/wiki/Emergency_Alert_System

    Emergency Broadcast System, Local Access Alert. The Emergency Alert System ( EAS) is a national warning system in the United States designed to allow authorized officials to broadcast emergency alerts and warning messages to the public via cable, satellite and broadcast television and both AM, FM and satellite radio.

  3. Wireless Emergency Alerts - Wikipedia

    en.wikipedia.org/wiki/Wireless_Emergency_Alerts

    An example of a Wireless Emergency Alert on an Android smartphone, indicating a Tornado Warning in the covered area. Wireless Emergency Alerts (WEA, formerly known as the Commercial Mobile Alert System (CMAS), and prior to that as the Personal Localized Alerting Network (PLAN)), is an alerting network in the United States designed to disseminate emergency alerts to mobile devices such as cell ...

  4. Integrated Public Alert and Warning System - Wikipedia

    en.wikipedia.org/wiki/Integrated_Public_Alert...

    The Integrated Public Alert and Warning System ( IPAWS) is an architecture that unifies the United States' Emergency Alert System, National Warning System, Wireless Emergency Alerts, and NOAA Weather Radio, under a single platform. IPAWS was designed to modernize these systems by enabling alerts to be aggregated over a network and distributed ...

  5. National Emergency Message - Wikipedia

    en.wikipedia.org/wiki/National_Emergency_Message

    An emergency action notification test on an Android smartphone; October 3, 2018. A National Emergency Message ( SAME code: EAN), formerly known until 2022 as an Emergency Action Notification, is the national activation of the Emergency Alert System (EAS) used to alert the residents of the United States of a national or global emergency such as ...

  6. Severe thunderstorm warning - Wikipedia

    en.wikipedia.org/wiki/Severe_thunderstorm_warning

    Definition. A severe thunderstorm warning indicates the warned area is in impending danger from hail or wind speeds meeting warning criteria as well as from lightning and hydrological impacts associated with the storm cell. Severe thunderstorms can and occasionally do produce tornadoes without warning. [2] While not all severe thunderstorms ...

  7. Emergency Broadcast System - Wikipedia

    en.wikipedia.org/wiki/Emergency_Broadcast_System

    Emergency Alert System. The Emergency Broadcast System ( EBS ), sometimes called the Emergency Action Notification System ( EANS ), was an emergency warning system used in the United States. It was the most commonly used, along with the Emergency Override system. It replaced the previous CONELRAD system and was used from 1963 to 1997, at which ...

  8. Specific Area Message Encoding - Wikipedia

    en.wikipedia.org/wiki/Specific_Area_Message_Encoding

    Specific Area Message Encoding (SAME) is a protocol used for framing and classification of broadcasting emergency warning messages. It was developed by the United States National Weather Service for use on its NOAA Weather Radio (NWR) network, and was later adopted by the Federal Communications Commission for the Emergency Alert System, then subsequently by Environment Canada for use on its ...

  9. CONELRAD - Wikipedia

    en.wikipedia.org/wiki/CONELRAD

    CONELRAD (Control of Electromagnetic Radiation) was a method of emergency broadcasting to the public of the United States in the event of enemy attack during the Cold War.It was intended to allow continuous broadcast of civil defense information to the public using radio stations, while rapidly switching the transmitter stations to make the broadcasts unsuitable for Soviet bombers that might ...