KATWARN is a service app for transmitting danger and disaster warnings within Germany. The app provides location-based notification of danger alerts, such as heavy fires or extreme weather, with the ability to always be informed for the current location and additionally for seven other, freely selectable places. This selection can be canceled, adjusted and switched off at any time. Using energy-efficient location via base stations and Wi-Fi access points (and not GPS) will only marginally impact your battery.

KATWARN Announces Official Alert Information from Competent Authorities
Facilities and control centers that have implemented the KATWARN system.