nws.alerts_point

stable Advanced

Active weather alerts covering a US point.

GET /v1/nws/alerts_point

What you get#

A list of Nws results in Onekey's unified shape, in data (an array). An empty array is a normal, successful answer and is charged like any other; a source that reports "nothing found" as an error returns a free 404 not_found instead.

What it costs#

Advanced · 5 credits for a fresh fetch, charged only when it succeeds.
Free when served from cache (0.2 credit for a cached response over 100 KB).
Free if the request is invalid (never charged) or the source fails or reports not found (refunded).

Parameters#

Name	Type	Required	Default	What it is	Constraints
`lat`	string	yes	(required)	Latitude (max 4 decimals)	max 8 chars; must match `-?\d{1,2}(?:\.\d{1,4})?`; trimmed
`lon`	string	yes	(required)	Longitude (max 4 decimals)	max 9 chars; must match `-?\d{1,3}(?:\.\d{1,4})?`; trimmed

Request#

curl "https://api.onekey.dev/v1/nws/alerts_point?lat=39.7456&lon=-97.0892" \
  -H "x-api-key: YOUR_API_KEY"

Try it

Add your key to run this call right here. No key? Get one free. The key stays in this tab.

Recorded response#

A real Nws response, recorded and returned in Onekey's shape. Fields the platform does not provide are null.

json

{
  "success": true,
  "data": [
    {
      "entity": {
        "id": "urn:oid:2.49.0.1.840.0.7657e1fa17ce47fd5b503acbb92082621adbaa21.001.1",
        "name": "Flood Watch",
        "description": "Flood Watch issued September 28 at 2:03PM CDT until October 1 at 6:00PM CDT by NWS Topeka KS",
        "category": "Severe",
        "date": "2026-09-28T19:03:00Z"
      },
      "ext": {
        "urgency": "Future",
        "certainty": "Possible",
        "areaDesc": "Republic; Washington; Marshall; Nemaha; Brown; Cloud; Clay; Riley; Pottawatomie; Jackson; Ottawa",
        "expires": "2026-09-29T11:00:00Z",
        "instruction": "You should monitor later forecasts and be alert for possible Flood\nWarnings. Those living in areas prone to flooding should be prepared\nto take action should flooding develop."
      },
      "author": {
        "displayName": "NWS Topeka KS"
      },
      "content": {
        "createdAt": "2026-09-28T19:03:00Z",
        "text": "* WHAT...Flooding caused by excessive rainfall continues to be\npossible.\n\n* WHERE...Portions of north central and northeast Kansas, including\nthe following counties, in north central Kansas, Clay, Cloud,\nOttawa, Republic and Washington. In northeast Kansas, Brown,\nJackson, Marshall, Nemaha, Pottawatomie and Riley.\n\n* WHEN...From Tuesday evening through Thursday afternoon.\n\n* IMPACTS...Excessive ru"
      }
    }
  ],
  "metadata": {
    "platform": "nws",
    "endpoint": "alerts_point",
    "cached": false,
    "stale": false,
    "age_s": 0,
    "fetched_at": "2026-01-01T12:00:00+00:00",
    "credits_charged": 5,
    "request_id": "7f3a9c2e5b1d4c8fa2e6d0b9c4f18e37"
  },
  "error": null
}

Field mapping#

How this endpoint's source fields become Onekey's unified schema. Fields the source lacks come back as null.

Source path	Onekey field	Transform
`properties.id`	`entity.id`	-
`properties.event`	`entity.name`	-
`properties.headline`	`entity.description`	-
`properties.severity`	`entity.category`	-
`properties.urgency`	`ext.urgency`	-
`properties.certainty`	`ext.certainty`	-
`properties.areaDesc`	`ext.areaDesc`	-
`properties.senderName`	`author.displayName`	-
`properties.sent`	`content.createdAt`	`toIsoDate`
`properties.effective`	`entity.date`	`toIsoDate`
`properties.expires`	`ext.expires`	`toIsoDate`
`properties.description`	`content.text`	-
`properties.instruction`	`ext.instruction`	-

Caching and freshness#

Fresh for about 30 seconds. Repeat calls in that window are served from cache and are free.
Between 30 seconds and 5 minutes the cached copy is still served instantly and marked stale: true while Onekey refreshes it in the background.
If the source is down when a refresh is needed, the last copy can be served for up to 1 hour more (marked stale).
A "not found" is remembered for 1 minute and is free.
The cache is shared across all customers, which is what keeps repeat calls cheap.

What can go wrong#

Status	Code	What to do
401	`unauthorized`	Check the `x-api-key` header.
402	`insufficient_credits`	Add credits; your balance must cover the price.
404	`not_found`	Unknown endpoint path.
422	`invalid_params`	Fix the parameters using the table above. Free.
429	`rate_limited`	Wait `Retry-After` seconds, then retry.
502	`upstream_error`	The source failed. Refunded; retry with backoff.

See Errors for the full list and retry guidance.

Status: stable (verified against the live source).