NWS Weather Alerts MCP Server

by olyport Your server? Claim it

answering

NWS Weather Alerts is answering right now. Last checked 12 min ago. It exposes 3 tools.

Active weather alerts and warnings from the National Weather Service

Uptime history 47 days of history

47 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

544 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check NWS Weather Alerts every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add nws-alerts --transport http https://mcp.olyport.com/nws-alerts/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "nws-alerts": {
      "url": "https://mcp.olyport.com/nws-alerts/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.nws-alerts]
url = "https://mcp.olyport.com/nws-alerts/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "nws-alerts": {
      "url": "https://mcp.olyport.com/nws-alerts/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "nws-alerts": {
      "url": "https://mcp.olyport.com/nws-alerts/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

alert

get_alert_detail

Get full details of a specific NWS weather alert by its ID. Returns the complete alert including description, instructions, and affected areas. Use alert IDs from get_alerts results. Args: alert_id: The full NWS alert ID (e.g. 'urn:oid:2.49.0.1.840.0.xxx').

alerts

get_alerts

Get active NWS weather alerts for a US state. Returns current weather alerts including watches, warnings, and advisories issued by the National Weather Service. Args: state: Two-letter US state abbreviation (e.g. 'CA', 'TX', 'NY'). severity: Filter by severity level: 'Extreme', 'Severe', 'Moderate', or 'Minor'. event: Filter by event type (e.g. 'Tornado Warning', 'Flash Flood Watch'). limit: Maximum number of alerts to return (default 25, max 500).

forecast

get_forecast

Get the weather forecast for a specific latitude/longitude location. Returns a multi-day forecast from the National Weather Service. Works for any location within the United States and its territories. Args: latitude: Latitude of the location (e.g. 38.8894 for Washington DC). longitude: Longitude of the location (e.g. -77.0352 for Washington DC).

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.olyport.com/nws-alerts/mcp	streamable-http	answering	547 ms	12 min ago

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NWS Weather Alerts — questions

Answers built from our own checks of this server.

What can NWS Weather Alerts do?

It exposes 3 tools, read directly from the server on our last check. Among them: get_alert_detail, get_alerts, get_forecast. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is NWS Weather Alerts working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 544 ms. The bar chart above shows every period we have measured.

How do I connect NWS Weather Alerts?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does NWS Weather Alerts need an API key?

No. NWS Weather Alerts completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is NWS Weather Alerts?

It answers our handshake in 544 ms on average, which is faster than 25% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.