StacksVerified U.S. regulatory reference

47 CFR §10.420

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
A WEA Alert Message processed by a Participating CMS Provider shall include five mandatory CAP elements—Event Type; Area Affected; Recommended Action; Expiration Time (with time zone); and Sending Agency. This requirement does not apply to National Alerts.