The Early Warnings for All initiative is built on four pillars to support countries in building and operating effective and inclusive multi-hazard early warning systems: 

• Disaster risk knowledge - led by the United Nations Office for Disaster Risk Reduction (UNDRR) 

• Detection, observation, monitoring, analysis, and forecasting - led by the World Meteorological Organization (WMO) 

• Warning dissemination and communication - led by the International Telecommunication Union (ITU) 

• Preparedness and response capabilities - led by the International Federation of Red Cross and Red Crescent Societies (IFRC)

Source: WMO