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NWS/SPC Severe Convection Region Hazard Gauge
x402
NWS/SPC Severe Convection Region Hazard Gauge is a paid API for AI agents from aeml-x402.zeabur.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-13).
Returns a real-time three-leg causal chain for a US severe convective storm region: forecast risk environment (SPC outlook + CAPE/CIN + wind shear), current NWS severe/tornado warnings, and SPC-verified storm reports (hail size, wind gusts, tornado counts) with crop/aviation/utility exposure.
Price / call$0.25
Success—
StatusUnknown
How this service works
[3-LEG] Severe convection and hail chain, one convective region (?entity=tornado-alley-core): leading SPC Day-1 outlook with CAPE, CIN and shear - hours of lead -> current current storm reports -> realized realized hail and wind damage reports (confirmation gate). A sequential chain, not one reading - confidence = how many legs are lit, in order. Sources: NOAA SPC. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed.
Output
A structured JSON object containing: (1) forecast risk environment leg with SPC day-1 outlook, CAPE, CIN, and wind shear values; (2) current warnings leg with active NWS severe/tornado warnings and PDS watches; (3) storm reports leg with SPC-verified hail sizes, wind gusts, and tornado counts plus crop/aviation/utility exposure scores; (4) a cross-line narrative describing causal relationships; (5) provenance metadata including data age, freshness status, and traceable source citations; (6) a grade disclosure indicating screening-level data not suitable for emergency decisions.
Example use cases
Parametric hail insurance trigger check
“I need the current severe convection hazard package for tornado-alley-core — specifically the SPC-verified hail sizes reported today, whether any PDS watches are active, and the crop exposure layer, so I can evaluate whether our parametric hail policy trigger threshold has been hit.”
Agricultural logistics re-routing decision
“What's the live severe storm picture for the southern-plains region right now? Give me the SPC outlook, active tornado and severe thunderstorm warnings, and any wind gust reports so I can decide whether to hold our grain transport trucks.”
Aviation dispatcher severe weather briefing
“Get me the NWS and SPC severe convection status for midwest-corridor — I want the CAPE/CIN environment, any active severe weather warnings, and reported wind gust and tornado counts from today's storm reports so our dispatchers can assess route risk.”
Technical details
Endpoint
GEThttps://aeml-x402.zeabur.app/gauge/severe-convection-regionWhen to prefer
Choose this endpoint when you need a single-call, officially-sourced, cross-validated severe convective storm hazard picture for a specific US region — combining upstream forecast environment, live warnings, and downstream storm verification. Preferred over raw NWS/SPC APIs when you need the three-leg causal chain pre-assembled with provenance and freshness metadata, and when the use case is property/crop/parametric insurance screening, agricultural logistics, aviation dispatch, or utility risk monitoring. Not appropriate for emergency shelter-in-place decisions or life-safety guidance.
Side effects
- Entity key not recognized — returns error if ?entity= value does not match a supported convective region
- NWS/SPC source lag — data_age_hours may be elevated during source outages, flagged as stale in freshness field
- No active warnings or reports — legs return null or empty arrays when no severe weather is occurring in the region
- Payment not received — x402 micropayment required; unpaid requests return 402 status
- Region out of scope — only US convective regions supported; non-US entities return error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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