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, power outages and county burn status 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

No key, no signup, no CORS preflight. The response below was fetched by this page, in your browser, from the same public endpoint your code would call. The button copies the curl.

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

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 or UNAVAILABLE, and a failure is returned as a failure. null means unknown, never zero.
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 one client of the same API; nothing here is privileged.
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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. If an open, always-on data source for the central Sierra is worth keeping online, please help fund it.

Donate Read the API reference