Field Operations Risk Briefing — Weather + GPS/Radio Conditions

Give it US locations. Get back the NWS forecast and active weather alerts plus current space-weather conditions — Kp index, GPS/HF-radio-relevant radio blackout severity, and aurora-visible latitude — in one briefing per location, instead of checking weather.gov and spaceweather-style sites separately.

Built for anyone whose fieldwork depends on both what's happening on the ground and overhead: precision-ag/survey teams relying on GPS accuracy, HF radio operators (ham, aviation, remote utility crews), and drone/UAV operations planning around both storms and radio blackouts.

Input

{
  "locations": [
    { "label": "Austin, TX", "latitude": 30.2672, "longitude": -97.7431 }
  ],
  "forecastPeriods": 4
}

Field	Type	Description
locations	array	{ "label": "optional name", "latitude": ..., "longitude": ... }. US locations only — NWS coverage.
forecastPeriods	integer (default 4)	How many ~12-hour NWS forecast periods to include (4 ≈ next 2 days).

Output

One record per location:

{
  "label": "Fairbanks, AK",
  "latitude": 64.8378,
  "longitude": -147.7164,
  "weather": {
    "city": "Fairbanks",
    "state": "AK",
    "timeZone": "America/Anchorage",
    "forecastPeriods": [{ "name": "Tonight", "temperature": 51, "shortForecast": "Isolated Rain Showers", "...": "..." }],
    "activeAlerts": []
  },
  "spaceWeather": {
    "kpIndex": 1.67,
    "auroraVisibleLatitude": 62.4,
    "radioBlackout": { "xrayFlux": 3.74e-7, "rScale": "R0", "rScaleDescription": "No radio blackout" },
    "observedAt": "2026-08-08T03:00:00"
  },
  "briefedAt": "2026-08-08T07:43:50.308Z"
}

spaceWeather is the same snapshot on every location in a run — it's not a per-location measurement, current conditions are shared globally. Compare it against a location's latitude yourself (as above: Fairbanks at 64.8°N is above the 62.4° aurora viewline, so aurora is plausible there tonight).

How it works

Two official, keyless US-government JSON APIs, no scraping, no proxy:

• Weather/alerts: api.weather.gov (National Weather Service)
• Space weather: services.swpc.noaa.gov (NOAA Space Weather Prediction Center) — Kp index and the 0.1-0.8nm GOES X-ray channel, classified into NOAA's own published R-scale

Space weather is fetched once per run and attached to every location record — it's identical for everyone regardless of location, so there's no reason to refetch it per location.

Related products

Need just one signal instead of the combined briefing?

• US Weather Tracker — NWS forecast/alerts only, per location
• Space Weather Alert — Kp/radio-blackout/aurora/NOAA alerts only, global snapshot

Pricing note

Billed per location briefed — the shared space-weather fetch doesn't add cost per location, so briefing 10 locations costs the same as briefing 1 for the space-weather portion.