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NWS Active Severe Weather Alerts Feed
x402
NWS Active Severe Weather Alerts Feed is a paid API for AI agents from oracles-production.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Returns active NWS severe/extreme weather alert changes (tornado, hurricane, flood, winter storm, etc.) with area, urgency, certainty, effective/expiry times, and a 1-10 severity score
Price / call$0.05
Success—
StatusUnknown
How this service works
Active NWS severe/extreme weather alerts (tornado, hurricane, flood, winter storm…) with area, urgency, certainty, effective/expiry times, and a 1-10 severity score.
Output
A JSON object containing a count of matching alerts, the data source identifier, and an array of alert change objects. Each change includes the alert type (e.g. TornadoWarning), a title, a detail object with area/urgency/certainty info, a plain-language summary, a unique entityId, a link to the primary NWS source for verification, the ISO-8601 timestamp when the change was detected, an integer severity score from 1-10, and the effective date of the alert.
Example use cases
Emergency dispatch alert routing
“Check for any tornado or hurricane warnings active right now in the Southeast region — I need to know the urgency level and affected areas so we can dispatch emergency responders to the highest-risk zones first.”
Weather event monitoring for operations
“Show me all new severe weather alerts detected in the last 2 hours with a severity score above 6 — I'm running a logistics operation and need to know if winter storms or floods might disrupt our routes.”
Real-time public safety notifications
“Pull the most recent extreme weather alerts across the country with certainty and urgency details — we're broadcasting emergency warnings and need to prioritize the highest-impact tornado and flood warnings.”
Technical details
Endpoint
GEThttps://oracles-production.up.railway.app/v1/weather-alerts/changesWhen to prefer
Use this endpoint when you need structured, scored, real-time NWS severe weather alert data with urgency/certainty metadata and change-tracking since a specific timestamp. Prefer it over general weather APIs when you need emergency-grade alert signals (tornado, hurricane, flood, winter storm) with a severity score for triage, or when building monitoring systems that poll for new high-severity alerts at regular intervals.
Side effects
- Invalid date-time format for 'since' parameter returns a 400 validation error
- min_significance outside 1-10 range returns a 400 error
- limit outside 1-500 range returns a 400 error
- No active alerts matching filters returns an empty changes array with count 0
- Payment not provided or insufficient returns a 402 Payment Required response
- NWS upstream feed unavailable may return a 503 or stale data
- Network timeout on Railway infrastructure returns a 504
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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