The simple idea of Rain Alarm is to warn you against approaching precipitation like rain or snow. Therefore the app checks in a customizable radius every couple of minutes, if there is something approaching. Info The original precipitation radar images of the mentioned weather services are used indirectly. Their data is extracted and processed before the Rain Alarm server generates a new radar image for this app. This means that the radar data displayed by this app might not be the same as of the originating weather service.
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