The Grid checking…
fetching place summary…

Loading the current state of the region…

The Grid is the public data service of S.I.E.R.R.A — a volunteer 501(c)(3) serving the central Sierra. Wildfire, evacuation, weather, earthquake, road incidents and power outages from a dozen upstream feeds, normalized into one queryable event model with full revision history. Read-only, keyless, CORS-open.

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Events · extreme
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Events · severe
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Events · moderate
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Evacuation zones
Top of the feed
fetching /api/v1/events…
01

Your first request

There is no key, no signup and no CORS preflight to negotiate. The response below was fetched by this page, in your browser, from the same public endpoint your code would call — the button copies the exact curl.

GET /api/v1/events?place=…&page_size=1 
fetching…
02

Three contracts, not conventions

One model
Every hazard, one query
Wildfire, evacuation, weather alert, fire weather, earthquake, road incidents and power outages are normalized from a dozen upstream feeds into one event model with full revision history. Ask once; get the whole region.
Fail loud
Absence is never an all-clear
Every feed reports OK / STALE / UNAVAILABLE, and a failure is rendered as a failure — null means unknown, never zero. Life-safety data you can trust because it tells you when it can't.
Unprivileged
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.
03

Conventions

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