National Weather Service United States Department of Commerce

Non Weather Emergency Message Service 

CAP Formatted Non Weather Emergency Messages (NWEMs) service is operational and available nationally. See the For Government information for details on the two required registrations:

  • FEMA Integrated Public Alert and Warning System (IPAWS) application to obtain your Collaborative Operations Group (COG) identity: Memorandum of Agreement with FEMA required.

NWEM Broadcasting is the NWS's All-Hazards Emergency Message Collection System, is a comprehensive national solution for the centralized collection and efficient distribution of Non-Weather Emergency Messages (NWEMs). NWEMs created by government officials with public warning authority are distributed through the NWS dissemination infrastructure, NOAA Weather Radio All Hazards, other national systems, and to the nation's Emergency Alert System (EAS).

A NWEM is a specialized form of an OASIS Common Alerting Protocol (CAP) alert. The CAP alert is sent to the NWEM service via FEMA's Open Platform for Emergency Networks (IPAWS-OPEN) interoperability infrastructure.

Third party developers may also develop authoring tools using the NWEM Application Programming Interface (API). A list of third-party developers is online. Developers who have CAP 1.1. or 1.2 listed under the Post NWEM plan to provide an alert authoring capability for Non Weather Emergency Distribution.