For disaster warning, we need an application which tries to download a file from our servers. This file will be in a special format, including where there is a disaster (probably by giving numbers to areas) and which type of disaster.
In the application, the user has to specify where he is and the application tries to download the mentioned files from our servers (there will be multiple sources in case one will be unavailable), like all 30 seconds. If there happens to be a disaster warning for the specified area, the application should show a full screen warning (a red screen with all the necessary information, like type of the desaster, further informations and directions,...) and no option to close the warning screen for 30 seconds.
We need a new format for the disaster alerts (could be based on XML). It would help us if there was an application to create the files.