The Webchester Early Warning System (WBEWS) is a national warning system in Webchester put into place on May 21, 1995. It is jointly coordinated by the Civil Contingencies Office (CCO), the Webchesterian Regulatory Authority for Broadcasting and Telecommunications (WBRABT) and the Webchesterian Meteorological Office (WMO). The WBEWS regulations and standards are governed by the Public Safety and Homeland Security Committee of the WBRABT.

The system is primarily designed to distribute information regarding imminent threats to public safety, such as severe weather situations (including flash floods and tornadoes), AMBER Alerts of child abductions, and other civic emergencies. With it, national and local authorities can issue warnings so that authorities and the media can warn the population.

WBEWS is available in all situation centers of the state governments and their redundancy locations as well as in all integrated control centers in the Capital District, Lasership and Hoovyland. In addition, 750 web-based accesses are available for authorized bodies (control centers, disaster control authorities, departments).

The government of Webchester is responsible for warning the population across the board in the event of a defense, i.e. in case of war. A civil protection officer can use WBEWS to trigger the warning devices available in his area of responsibility in one operation. In WBEWS, warning messages are supplemented with behavior recommendations for those affected.

WBEWS can simultaneously transmit individual reports across Webchester to all connected broadcasters and other media. Messages can be transmitted in different warning levels. Warnings of level 1 contain, in particular, the request to the editors to interrupt the current programme and to pass on the text of the warning announcement immediately via the transmitter and to repeat it regularly as long as no all-clear or other instructions have been given.

In addition to the warning function, WBEWS contains a highly available text communication system with which messages can be exchanged between the WBEWS stations. This communication path between all WBEWS full stations takes place via the satellite connection and thus works even if terrestrial communication links fail.

The government of Webchester makes WBEWS available to the states for disaster control purposes. This serves on the one hand to use budget funds economically, but also to establish the warning system among the population. All 26 states make use of this possibility. In addition, the Webchesterian Meteorological Office uses the WBEWS to transmit warnings of extreme weather events to the media.

The rapid transmission of hazard announcements is ensured by a large number of warning multipliers and warning devices:
all public broadcasters
all private broadcasters
News agencies
City advertising boards
Telecommunications company
Pager service
Group management center of Webchesterian Railways (announcements at stations and in trains)
Warning app of the CCO
Warning portal of the CCO

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The Standard Emergency Warning Signal (SEWS) is a warning siren used in Webchester to alert the public of danger. The siren is played over radio, television or public address systems in public places to warn of imminent threats to public safety, such as severe weather situations (including flash floods and tornadoes), AMBER Alerts of child abductions, and other civic emergencies.

The SEWS was developed by the Webchesterian Meteorological Office (WMO) in the 1970s for tropical cyclone warnings. It was adopted as a national emergency warning signal on May 21, 1995.