National Weather Service alerts — warnings, watches, and advisories captured from the NWS/api.weather.gov alert feed. 3,060 alerts. Tornado, flood, hurricane, winter storm, excessive heat, and red flag warnings with affected areas, severity, certainty, and effective/expiration windows.
The listed URL identifies a referenced source; it does not by itself document the ingestion endpoint. Referenced source URL: https://www.weather.gov/documentation/services-web-api. Source-specific terms apply. US federal employee-authored works are generally public domain under 17 USC 105; non-federal and third-party material retains source terms. Free or keyless access does not alter source terms. Metadata and normalization authored by MORVS (AI Analytics LLC) are CC0 only where expressly stated.