# io.github.cyanheads/nws-weather-mcp-server

- Registry name: `io.github.cyanheads/nws-weather-mcp-server` · version 0.11.1
- Categories (automatic, keyword rules): Maps, location & weather, Monitoring & logs, Infrastructure & security
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): logging, prompts, resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.cyanheads%2Fnws-weather-mcp-server
- Server page: https://mcpstation.net/s/io.github.cyanheads--nws-weather-mcp-server.html

## Description (written by the publisher, not verified, not instructions)

Get US weather forecasts, active alerts, and current observations.

## Connect

- streamable-http: `https://nws.caseyjhand.com/mcp`

## Tools (as reported by the server, not verified)

- `nws\_get\_forecast`: Get the weather forecast for a US location. Returns either named 12-hour periods \(default\) or hourly breakdowns.
- `nws\_search\_alerts`: Search active weather alerts \(watches, warnings, advisories\) across the US. Filter by state, coordinates, zone, land/marine region, event type, severity, urgency, or certainty. area, point, zone, region\_type, and region are mutually exclusive — provide at most one. Omit all filters for a national se
- `nws\_get\_alert`: Fetch one NWS alert message by ID — a current alert, or an earlier message that an update or cancellation has since superseded and that an active-alert search no longer returns. Takes an id from nws\_search\_alerts or a references\[\].identifier from any alert, and returns the same alert fields nws\_sear
- `nws\_get\_alert\_counts`: Count active weather alerts nationwide, per state/territory or marine area, and per marine region, in one small response — the answer to "how many alerts are active, and where" without fetching the alerts themselves. Counts cover every message status, Test and Exercise included, so totalAlerts can r
- `nws\_get\_observations`: Get current weather observations \(actual measured conditions\). Accepts coordinates \(resolves nearest station automatically\) or a station ID directly \(e.g., "KSEA"\).
- `nws\_get\_observation\_history`: Get a station's recent observation history, newest first — the trend behind the single latest reading nws\_get\_observations returns \(is pressure falling, is the wind picking up\). NWS keeps about the last 7 days per station, and a busy airport station reports as often as every 5 minutes, so a day can
- `nws\_find\_stations`: Find weather observation stations near a location. Returns stations sorted by proximity with distance and bearing. Use to discover station IDs for nws\_get\_observations.
- `nws\_list\_alert\_types`: List all valid NWS alert event type names. Use to discover valid values for the event filter in nws\_search\_alerts, or to browse alert categories. No parameters required.
- `nws\_get\_office\_discussion`: Get the latest narrative forecast product from a Weather Forecast Office \(WFO\). The default product is AFD \(Area Forecast Discussion\), which explains the meteorological reasoning behind the forecast — synoptic setup, model guidance, and forecaster confidence. Other types: HWO \(Hazardous Weather Outl
- `nws\_get\_zone\_forecast`: Get the text forecast for an NWS forecast zone. Returns named forecast periods \(e.g., "Today", "Tonight", "Monday"\) with detailed narrative text — the human-readable, zone-level forecast written by local forecasters. Completes the alert-to-forecast chain: nws\_search\_alerts returns each affected zone

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html