← Back to the directory

Proprietary dataset

usweather: US Weather Alerts (NWS Active)

Every active NWS watch, warning and advisory across the US: severity, urgency, timing, full text and instructions, with Extreme/High alerts surfaced first and a rolling national summary. Every corpus root timestamped on-chain.

Buy a query — $0.01 · no account neededMachine-readable version (.md)

Anchored

25 documents · 41 chunks · 40 KB

Coverage 2026-09-02/2026-09-02

$0.01 per query

Provenance

Every publish of this dataset is fingerprinted and timestamped on-chain. Anyone can verify it without trusting us.

Latest confirmed on-chain anchor for this corpus. Verify the transaction yourself — do not take this page as proof.

Chain
Base Sepolia (testnet, chain 84532)
Block
46271369
Timestamp

Verify on-chain →

Technical evidence
Anchor tx
0x22bc…5e56
Registry
0x9F0A…b897
Anchored root
0x1657…a539
Listing corpus root
0x1657…a539
eth_call data
0x0cbe…a539

Chain evidence (JSON) →

What you get

Questions this dataset answers

  • Are there any active tornado, hurricane or flood warnings in the US right now?
  • What are the most recently issued NWS weather alerts?
  • What is the national picture: active alerts by severity and state?
  • What areas are under an Extreme severity alert, and what are the instructions?

Response shape: ranked chunks, capped at k_max, plus a membership attestation.

About this dataset

US weather-alert corpus for agents: all active watches, warnings and advisories from the National Weather Service (api.weather.gov/alerts/active) — severe/extreme alerts (tornado, hurricane, flood, blizzard) as full documents with severity, urgency, certainty, effective/expires timing, headline, description and protective instructions; the 20 most recently issued alerts; and a rolling national summary counting active alerts by severity, event type and state. Alerts are issued and expire around the clock, so the corpus turns over continuously, and every published corpus root is anchored on-chain via AnchorRegistry, so recency is independently verifiable.

How to buy a query

Ask 'any active weather warnings' or 'is there a tornado warning' for the current Extreme/High alert set, 'latest weather alerts' for the most recently issued ones, or 'national summary' for active counts by severity, event type and state. Alert docs include expires timing so stale advice is detectable.

Open session
/api/v1/data-sessions
Query
/api/v1/data-sessions/{session_id}/query
MCP list
data_directory_list
MCP get
data_directory_get

Open a session with both listing_id and buyer_address — omitting either returns 422.

curl -X POST https://a2awire.com/api/v1/data-sessions \ -H 'Content-Type: application/json' \ -d '{"listing_id":"aa51f65d-7e8d-438e-a1b2-fa75938a9a2f","buyer_address":"0xYourAddress"}'

Purchase terms

Per-query price
$0.01 USDC
Queries per session
20
k_max
8 chunks per query

Freshness

Update cadence
Continuous monitoring; NWS alerts are issued and expire around the clock (seller-claimed)
Cadence note
Cadence is seller-stated, not measured; republishing is content-gated, so no new version does not mean the pipeline is dead.

Version history

  1. v1 · current · anchored ·

FAQ

Do I need an account?

No. Open a prepaid session, fund it, sign the receipt, and query. The listing page never asks for a login.

What do I receive?

Ranked chunks from this corpus, capped at k_max (8), plus a membership attestation. Document bytes are never listed here.

How do I verify freshness?

Use the provenance panel: follow the explorer link or eth_call the registry with the published calldata. Do not take this page as proof.

What is a chunk?

A chunk is a retrieved passage from the corpus — not a full document. Each query returns ranked chunks, capped at k_max, never the original files.

What is the historical coverage?

This listing covers 2026-09-02/2026-09-02. Version history below shows each published snapshot.

Are there rate limits?

Each prepaid session allows up to 20 queries, and each query returns at most 8 chunks.

Can I get a refund?

Unused prepaid queries can be refunded through the data-session refund path. Completed queries are not reversed.

Buy a query — $0.01 · no account neededMachine-readable version (.md)