The Common Alerting Protocol (CAP) Standard

CAP Standard

CAP front



  • An international standard format for emergency alerting and public warning

  • A single XML message to disseminate quickly over multiple alerting channels

  • All-hazards: location, magnitude, potential impacts

  • All-media: Mobile sms, social media, radio, TV 

Learn more: Key facts of a CAP message CAP alert for volcano      Communicating Life-saving Action