NWS CAP — Common Alerting Protocol Advisory Feed

All NWS-issued advisories (Watches, Warnings, Advisories, Special Weather Statements) in OASIS CAP 1.2 + GeoJSON. Sub-minute availability after issuance. Authoritative cross-validation source for any flash-flood, fire-weather, severe-storm, frost, or marine advisory.

Provider	NOAA NWS
Delivery mode	stream
CNR score	86
Cadence	event-triggered
Origin	https://www.weather.gov/documentation/services-web-api