---
title: "Multi-hazard alerts (GDACS)"
method: GET
path: "/api/v2/hazards/alerts"
tags: ["Disasters & Hazards"]
---

# Multi-hazard alerts (GDACS)

`GET /api/v2/hazards/alerts`

Current GDACS (EC JRC + UN OCHA/UNOSAT) multi-hazard alerts - a cross-hazard OVERLAY (earthquake / tropical cyclone / flood / drought / volcano / wildfire) with a Green/Orange/Red alert level and exposed-population estimate. Filter by hazard type, alert level and bounding box. Automated, not human-reviewed; not a substitute for official warnings. Each event carries the upstream sourceid for cross-referencing.

## Query parameters

- `event_type` string, nullable — Hazard family: earthquake | tropical_cyclone | flood | drought | volcanic_activity | wildfire.
- `alert_level` string, nullable — green | orange | red.
- `min_lat` number, nullable
- `max_lat` number, nullable
- `min_lon` number, nullable
- `max_lon` number, nullable
- `limit` integer — Maximum alerts returned (most recently updated first).

## Response `200`

Successful Response

- EnvelopeGdacsAlertFeed
  - `data` GdacsAlertFeed, required
    - `query` GdacsAlertQuery, required
      - `event_type` string, nullable
      - `alert_level` string, nullable — green | orange | red.
      - `min_lat` number, nullable
      - `max_lat` number, nullable
      - `min_lon` number, nullable
      - `max_lon` number, nullable
      - `limit` integer, required
    - `total_matched` integer, required — Alerts matching the filters BEFORE the limit.
    - `count` integer, required
    - `events` GdacsAlertEvent[], required
      - `schema_version` string, required
      - `event_id` string, required
      - `event_type` string, required — Mapped hazard family: earthquake | tropical_cyclone | flood | drought | volcanic_activity | wildfire.
      - `source_event_time` string, nullable
      - `updated_time` string, nullable
      - `geometry` HazardGeometry, required
        - `lat` number, nullable — Latitude, decimal degrees (WGS84). Null if the source omitted a location.
        - `lon` number, nullable — Longitude, decimal degrees (WGS84).
        - `depth_km` number, nullable — Hypocentre depth, kilometres.
      - `area` object, nullable — null in v1 (getgeometry polygon/track deferred).
      - `place` string, nullable
      - `metrics` GdacsAlertMetrics, required
        - `alert_level` string, nullable — GDACS alert level: Green | Orange | Red.
        - `alert_score` number, nullable
        - `severity_value` number, nullable
        - `severity_text` string, nullable
        - `severity_unit` string, nullable
        - `upstream_source` string, nullable — The aggregated upstream agency.
        - `upstream_source_id` string, nullable — Cross-reference to the direct single-source feed.
        - `country` string, nullable
        - `glide` string, nullable
        - `is_current` boolean, nullable
        - `from_date` string, nullable
        - `to_date` string, nullable
        - `gdacs_event_type` string, nullable
        - `gdacs_event_id` integer, nullable
        - `gdacs_episode_id` integer, nullable
      - `severity` HazardSeverity, required — CAP-aligned severity block (OASIS Common Alerting Protocol vocabulary).
        - `severity` string, required — CAP severity: Extreme | Severe | Moderate | Minor | Unknown.
        - `certainty` string, required — CAP certainty. Earthquakes are Observed (the event happened).
        - `urgency` string, required — CAP urgency. Earthquakes are Past (an observed event, not a forward alert).
        - `derivation` string — 'native' (read verbatim from a CAP-native source) or 'sugra-computed' (derived by Sugra - carries no sovereign brand-shield).
      - `cap` object, nullable — null in v1 - severity is derived from the alert level, not read from the per-event CAP file.
      - `source` HazardEventSource, required
        - `institution` string, required
        - `tier` string, required — Sovereign (S) - named publicly.
        - `event_url` string, nullable — Upstream event page for full detail.
      - `disclaimer` string, required
    - `attribution` HazardAttributionSet, required
      - `sources` HazardSourceAttribution[] — Every sovereign source that contributed events.
        - `registry_key` string, required
        - `source_name` string, required
        - `licence` string, required
        - `citation` string, required
        - `disclaimer` string, required
      - `effective_reexport` string, required — Most-restrictive re-export verdict across the sources.
    - `disclaimer` string, required
    - `upstream` object
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header. JSON body with a stable `code` distinguishing `missing_api_key` (no header sent) from `invalid_api_key` (header sent, key not accepted); any other 401 source carries the generic `unauthorized` with its detail as `reason`. Plus `hint`. `plan` is always null on 401 - an unauthenticated request has no plan; quota exhaustion is 429, not 401.
- `422` — Validation Error
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

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