# Thunderstorm Watch

> Free, anonymous Severe Thunderstorm Watch ZIP checker using canonical National Weather Service data. US English only. Not an official government service.

Canonical site: https://thunderstormwatch.com/

## Agent-readable public pages

- Homepage and methodology: https://thunderstormwatch.com/index.md
- Pro offer and limitations: https://thunderstormwatch.com/pro.md
- Privacy Policy: https://thunderstormwatch.com/privacy.md
- Terms of Service: https://thunderstormwatch.com/terms.md
- About and source hierarchy: https://thunderstormwatch.com/about.md
- Service Status: https://thunderstormwatch.com/status.md

## Public JSON endpoints

- National Severe Thunderstorm Watch status: GET https://thunderstormwatch.com/api/watches
- ZIP point check: GET https://thunderstormwatch.com/api/check?zip=12345
- Bounded component readiness (no PII): GET https://thunderstormwatch.com/api/health

ZIP input must be exactly five ASCII digits. The service returns active/inactive only after fresh official verification. Stale or failed NWS data is unknown and must never be interpreted as no active watch.

## Product boundaries

- Severe Thunderstorm Watches only.
- The complete manual ZIP result is free and requires no account or email.
- IEM geometry and OpenStreetMap tiles are orientation-only progressive enhancement.
- Pro is described at $29/year for up to five ZIPs with event-driven email.
- The noindex account/auth/billing foundation is deployed, but production checkout remains disabled and saved-location monitoring is not live until Phase 2.
- Authenticated app/account content is intentionally excluded from public agent indexes and sitemaps.

## Safety

Thunderstorm Watch is supplemental only. For life-safety decisions, rely on Wireless Emergency Alerts, NOAA Weather Radio, local authorities, and https://www.weather.gov/.