grid.v1 / The Grid
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Signal Integrity & Emergency Radio Response Alliance

The Grid

Public hazard, road, and weather data for the central Sierra. Every value on this site is a browser fetch of a public, read-only, CORS-open /api/v1 endpoint that any third-party client would use — you can replay every request yourself.

no key required CORS-open
One picture, every hazard
Wildfire, evacuation, weather alert, fire weather, earthquake, and road incidents — normalized from a dozen upstream feeds into one queryable event model with full revision history. Ask once; get the whole region.
Honest by contract
Every feed reports OK / STALE / UNAVAILABLE. A source that fails says so — absence is never shown as an all-clear. Life-safety data you can trust because it tells you when it can't.
Built to be built on
Public, keyless, CORS-open, RFC 7946 GeoJSON. Any website, map client, or radio-room dashboard can consume it directly. This site is just one client of the same API — nothing here is privileged.
 
  
 
 
  
System status
 GET /api/v1/sources  
 poll → last success → status 
 
 
  
 SourceStatus PollLast success Error 
   
Loading /api/v1/sources…
  
 
  
 
 
 Area mode GET /api/v1/places/{area}/summary 
 
Loading area summary…
 
 
 
 
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Active events
 
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Layers
 
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Areas
 
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Active evac
 
 
 
  
Endpoints
 
  GET /api/v1/sources Per-source feed health: poll interval, last success, staleness, last error.   GET /api/v1/events Cross-layer event query — the one endpoint every occurrence is reachable through.   GET /api/v1/places · /api/v1/places:resolve Areas, counties, towns, zones, corridors — plus lat·lng / address resolve.   GET /api/v1/places/{place}/map/{layer}.geojson RFC 7946 FeatureCollection per hazard layer, with the honest-freshness metadata block.   GET /api/v1/history Chronological revision feed over a time range — the after-action view.   GET /api/v1 Full reference: severity ramp, place id scheme, the evacuation fail-loud contract.  
  
 
Keep this service running
 

S.I.E.R.R.A is an all-volunteer 501(c)(3). This service runs on donated time and a small
      cloud bill — the feeds, the servers, and the radio infrastructure behind them. The page
      you're on is the case for support: it's live, it's honest about what it doesn't know, and
      anyone can verify or build on it. If an open, always-on data source for the central Sierra
      is worth keeping online, please help fund it.

 Donate Read the API reference