Sky & space · 3 tools

NOAA Space Weather Prediction Center

Check geomagnetic storms, solar wind, aurora chances and official space weather alerts.

Live nowSource checked November 1Free tier

Notes. Part of NOAA/NWS; public domain under the NWS disclaimer. Terms checked 2026-11-02: https://www.weather.gov/disclaimer

Space weather now

noaa_swpc.space_weather_now

FreeLive now

Current planetary Kp index, the 24-hour Kp forecast peak, NOAA radio-blackout / radiation / geomagnetic storm scales with a 3-day outlook, and live solar wind speed and magnetic field.

Inputs

No inputs. Call it with an empty object {}.

Example output

{"kp_now":{"kp":2,"time":"2026-11-01T21:00:00Z","storm_level":"none"},"kp_forecast_24h_max":{"kp":3,"time":"2026-11-02T03:00:00Z","noaa_scale":null},"scales_now":{"radio_blackout_R":0,"solar_radiation_S":0,"geomagnetic_storm_G":0,"geomagnetic_text":"none"},"outlook":[{"date":"2026-11-02","r1_r2_minor_pct":1,"r3_major_pct":1,"s1_pct":1,"g_scale_expected":0},{"date":"2026-11-03","r1_r2_minor_pct":1,"r3_major_pct":1,"s1_pct":1,"g_scale_expected":0},{"date":"2026-11-04","r1_r2_minor_pct":1,"r3_major_pct":1,"s1_pct":1,"g_scale_expected":0}],"solar_wind":{"speed_km_s":454,"bt_nt":4,"bz_nt":1,"tim...

Data license

Public domain · Data from the NOAA Space Weather Prediction Center (public domain). Not an official SWPC product. Source

Try it

…

Call it

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "noaa_swpc.space_weather_now",
    "arguments": {}
  }
}

curl -sS -X POST https://www.realworldmcp.com/api/call/noaa_swpc.space_weather_now \
  -H 'content-type: application/json' \
  -d '{}'

const res = await fetch("https://www.realworldmcp.com/api/call/noaa_swpc.space_weather_now", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({})
});
console.log(await res.json());

Aurora chance at a place

noaa_swpc.aurora_chance

FreeLive now

NOAA's OVATION model probability of seeing aurora overhead at a location in the next 30-90 minutes, plus the strongest value a little poleward (aurora on the horizon).

Inputs

Name	Type	Description
`lat`required	number	Latitude in decimal degreesrange: -90 to 90
`lon`required	number	Longitude in decimal degreesrange: -180 to 180

Example output

{"query":{"lat":64.84,"lon":-147.72},"observed":"2026-11-02T00:28:00Z","forecast_for":"2026-11-02T01:28:00Z","aurora_overhead_pct":0,"chance_overhead":"very low","max_within_8deg_poleward_pct":5,"note":"OVATION model: probability of visible aurora overhead in the next ~30-90 minutes. A strong value poleward can mean aurora low on the horizon. Needs darkness and clear skies.","page":"https://www.swpc.noaa.gov/products/aurora-30-minute-forecast","attribution":{"source":"NOAA Space Weather Prediction Center","license":"Public domain (U.S. Government work)","source_url":"https://www.swpc.noaa.g...

Data license

Public domain · Data from the NOAA Space Weather Prediction Center (public domain). Not an official SWPC product. Source

Try it

…

Call it

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "noaa_swpc.aurora_chance",
    "arguments": {
      "lat": 64.84,
      "lon": -147.72
    }
  }
}

curl -sS -X POST https://www.realworldmcp.com/api/call/noaa_swpc.aurora_chance \
  -H 'content-type: application/json' \
  -d '{"lat": 64.84, "lon": -147.72}'

const res = await fetch("https://www.realworldmcp.com/api/call/noaa_swpc.aurora_chance", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"lat": 64.84, "lon": -147.72})
});
console.log(await res.json());

Space weather alerts

noaa_swpc.alerts

FreeLive now

Recent official SWPC alerts, watches and warnings (geomagnetic storms, solar radiation, radio blackouts), newest first.

Inputs

Name	Type	Description
`days`	integer	How many days backdefault: 3; range: 1 to 30
`limit`	integer	default: 5; range: 1 to 20

Example output

{"query":{"days":3,"limit":3},"total":14,"count":3,"alerts":[{"product_id":"K04W","issued":"2026-11-01T14:57:52Z","title":"EXTENDED WARNING: Geomagnetic K-index of 4 expected","message":"Space Weather Message Code: WARK04\nSerial Number: 5446\nIssue Time: 2026 Nov 01 1457 UTC\n\nEXTENDED WARNING: Geomagnetic K-index of 4 expected\nExtension to Serial Number: 5445\nValid From: 2026 Oct 31 1235 UTC\nNow Valid Until: 2026 Nov 01 2359 UTC\nWarning Condition: Persistence\n\n\nNOAA Space Weather Scale descriptions can be found at\nwww.swpc.noaa.gov/noaa-scales-explanation\n\nPotential Impacts: Ar...

Data license

Public domain · Data from the NOAA Space Weather Prediction Center (public domain). Not an official SWPC product. Source

Try it

…

Call it

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "noaa_swpc.alerts",
    "arguments": {
      "days": 3,
      "limit": 3
    }
  }
}

curl -sS -X POST https://www.realworldmcp.com/api/call/noaa_swpc.alerts \
  -H 'content-type: application/json' \
  -d '{"days": 3, "limit": 3}'

const res = await fetch("https://www.realworldmcp.com/api/call/noaa_swpc.alerts", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"days": 3, "limit": 3})
});
console.log(await res.json());