MCP For Claude Marketplace
Severe Weather Alerts

Severe Weather Alerts MCP Connector for Claude

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Active watches, warnings and advisories across the United States — NOAA NWS alerts by state, point or zone, with forecaster text, keyless.

5 tools Official Updated Oct 1, 2026 Official Vinkius Partner
More Details Connect to Claude

Connect any AI agent to official severe weather alerts for the United States — the National Weather Service API that publishes every watch, warning and advisory in force right now. No key required.

What you can do

  • See the national picture — counts by event, severity, urgency and state, with the most severe alerts in force, from one request
  • List alerts in force — ranked most severe first, paged, filterable by severity, urgency, event, state, latitude/longitude or UGC zone
  • Read one alert in full — the forecaster's product text, the protective instructions, and the AWIPS and WMO product identifiers
  • Check a location — every alert covering a latitude and longitude, with the forecast office responsible for it
  • Look up zones — the forecast, county, fire and marine zones of a state, which is how alerts are tied to geography

Why it matters

A warning is only useful if it reaches someone in time. Tornado Warnings carry urgency Immediate, Flood Watches are urgency Future, and the severity ranking puts Extreme and Severe events first. The feed also carries NWS system test messages — this server leaves them out unless asked, because they say "Monitoring message only, please disregard".

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5 tools expose this connector's capabilities to your AI agent.

list_active_alerts

Alert ids look like urn:oid:2.49... and are what get_alert_details takes. Feed entries that are system tests are left out unless include_tests is set — they say "Monitoring message only, please disregard". List the weather watches, warnings and advisories in force right now — ranked most severe first, with event, severity, urgency, area, states and expiry for each, from NOAA NWS

summarize_active_alerts

It reads the whole feed once and aggregates, so it costs one request instead of paging through hundreds of alerts. The by_state and by_event tables tell you which filter to pass to list_active_alerts next. Summarise every weather alert in force across the United States right now — counts by event, severity, urgency and state, plus the most severe alerts in force, from NOAA NWS

get_alert_details

id from list_active_alerts or summarize_active_alerts, or the full https URL of a single alert. Expired alerts are removed from the API, so an id that has ended returns "no alert exists" rather than a stale record — say so rather than retrying. Read one weather alert in full — the forecaster's product text, the protective instructions, the area, the AWIPS and WMO product identifiers and the products it supersedes

get_alerts_at_point

An empty answer means nothing is in force at that point. Coastal points may resolve to a marine zone, where Small Craft Advisories and Gale Warnings live. Find every weather alert covering a latitude and longitude right now — what is in force exactly there, with the responsible NWS forecast office and zone

list_state_zones

Counties are C codes (OHC009), forecast areas are Z codes (OHZ013). List the NWS forecast, county, fire or marine zones of one US state, with the zone ids alerts attach to

See how to talk to your AI agent using Severe Weather Alerts.

Are there any weather alerts for my location at 39N, 77W?

Nothing is in force at 39,-77 right now. That point falls in forecast zone MDZ504 under the NWS Sterling Virginia office (LWX), and no watch, warning or advisory covers it — that is a real clear result, not a failed lookup. When an alert does cover the point, it is matched against the alert polygon, which is more accurate than filtering by state.

What does the current Flood Warning for Minnesota say?

Flood Warning FLSARX (WMO identifier WGUS83 KARX 192032), issued by NWS La Crosse Wisconsin for Mower County, Minnesota — severity Severe, urgency Expected, in force from September 19 at 3:32 PM CDT until September 21 at 3:32 AM CDT. It carries a polygon, so it can be matched to a point. The full product text is available by passing its id, urn:oid:2.49.0.1.840.0.27a7c7bb871fffb4c2e5ea69dfce62e1a5ae6b38.002.1, to get_alert_details.

How active is the weather across the country right now?

Most of the alerts in force at any moment are marine, not land: Small Craft Advisories and Gale Warnings over coastal waters usually outnumber everything else, which is why a nationwide count looks high while your inland state looks quiet. The summary reports counts by event, severity, urgency and state, and ranks severity Extreme then Severe first — Flood Watches and Flood Warnings are the typical inland Severe events, with urgency Expected or Immediate. Call list_active_alerts with your state, or get_alerts_at_point with a latitude and longitude, to see only what covers you.

No. This reads the public National Weather Service API at api.weather.gov, which requires no key or account.

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