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Contact Person
ESPRI, Mitarbeiter, Daniel Faust
Dipl.-Inf. Daniel Faust
Vice Director
Business Unit ESPRI
Tel.: +49 30 3463-7572


Jan. 01, 2009

KATWARN is a free warning system for the population. The responsible authorities and agencies send via KATWARN official warning information on disasters, such as large fires, bomb alerts or hurricanes, directly to the mobile phones of affected citizens. Therefore, KATWARN supplements the general warnings issued by the police, fire brigade and radio by providing information that may be vitally important.

KATWARN is available as a smartphone app and alternatively, with lower functionality, as a text message and email service. The KATWARN app offers location-based warnings in case of hazardous situations, such as large-scale fires, power failures, bomb alerts, or extreme weather conditions, for the current location and for seven additional freely selectable KATWARN districts. KATWARN via text message and email offers warnings restricted to the area of one registered zip code.

KATWARN is already in use in various locations in Germany - at the municipal level as well as at the federal and national level. Besides this, it is used to warn specific user groups, such as the personnel employed at the port of Hamburg and operators of the fairground rides at the Oktoberfest in Munich. Moreover, further distribution of warnings among the population is ensured by the Berliner Verkehrsbetriebe (Berlin Transport Company) displaying KATWARN warnings in its timetable screens and TAXI BERLIN using the system in its control center.

On October 30, 2013, KATWARN received a commendation from around 1,000 entrants to the "Germany – Land of Ideas" initiative. This year's theme for the competition, which is supported by the federal government and the Federation of German Industries (BDI), was "ideas for cities".