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

io.github.cyanheads/nws-weather-mcp-server · v0.11.0 · location-and-travel

io.github.cyanheads/nws-weather-mcp-server is healthy: it completed an MCP handshake in 170 ms and exposes 9 tools.

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

Endpoint: https://nws.caseyjhand.com/mcp (streamable-http)

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Facts

Users (last 30 days)0
HandshakeHealthy
Auth neededNone
Tool count9
Latency170 ms
Last checked (UTC)2026-10-16T07:20:34.742Z

Health history

Checked (UTC)StatusLatencyError
2026-10-16T07:20:34.742ZHealthy170
2026-10-15T03:25:41.961ZHealthy2734

Tools (9)

nws_get_forecastGet the weather forecast for a US location. Returns either named 12-hour periods (default) or hourly breakdowns.
nws_search_alertsSearch 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_countsCount 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_observationsGet current weather observations (actual measured conditions). Accepts coordinates (resolves nearest station automatically) or a station ID directly (e.g., "KSEA").
nws_get_observation_historyGet 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_stationsFind 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_typesList 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_discussionGet 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_forecastGet the text forecast for a public 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 affecte