USGS significant seismic events — past month

At a glance

Publisher

U.S. Geological Survey

Jurisdiction

Global seismic observations

Publisher updates

USGS summary feed updated every minute; monitor hourly

SourceFinch checks

Hourly by default

Records per run

6 in the latest run

Record key

id

Acquired from

Publisher's public API: https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/significant_month.geojson

Recipe

v1.0.0, approved October 6, 2026

Verified since

October 6, 2026

Last green run

October 6, 2026

What the data contains

Reads the complete USGS significant_month.geojson rolling summary feed for the past month. Each feature becomes a record keyed by the publisher preferred event identifier. Magnitudes, locations, review status and timestamps can change as USGS revises its estimates. An event leaving this rolling window does not prove deletion, resolution or that the hazard has ended. Preferred identifiers can also change when events are merged; this recipe does not resolve aliases across identifiers. This recipe retains all feed event types. It does not infer impacts on infrastructure, resolve event aliases, or issue safety advice. Empty feeds are a possible publisher state; inspect source health before interpreting an empty result. SourceFinch is independent of USGS.

Fields and types

Every record has these fields. The key field id identifies a record across runs, so changes are reported field by field.

Sample output

The first 5 of 6 records from SourceFinch's own run on October 6, 2026, exactly as delivered.

[
  {
    "id": "us6000tz1y",
    "url": "https://earthquake.usgs.gov/earthquakes/eventpage/us6000tz1y",
    "place": "5 km NNE of Korumburra, Australia",
    "title": "M 4.7 - 5 km NNE of Korumburra, Australia",
    "status": "reviewed",
    "depth_km": 10,
    "latitude": -38.3802,
    "longitude": 145.8401,
    "magnitude": 4.7,
    "event_type": "earthquake",
    "event_time_ms": 1790956899581,
    "updated_time_ms": 1790971152074
  },
  {
    "id": "uw714111952",
    "url": "https://earthquake.usgs.gov/earthquakes/eventpage/uw714111952",
    "place": "6 km WNW of Wauna, Washington",
    "title": "M 4.2 - 6 km WNW of Wauna, Washington",
    "status": "reviewed",
    "depth_km": 27.92,
    "latitude": 47.4003333333333,
    "longitude": -122.722,
    "magnitude": 4.15,
    "event_type": "earthquake",
    "event_time_ms": 1790715956370,
    "updated_time_ms": 1791279690533
  },
  {
    "id": "us6000txpi",
    "url": "https://earthquake.usgs.gov/earthquakes/eventpage/us6000txpi",
    "place": "80 km ENE of Tadine, New Caledonia",
    "title": "M 6.6 - 80 km ENE of Tadine, New Caledonia",
    "status": "reviewed",
    "depth_km": 10,
    "latitude": -21.2982,
    "longitude": 168.61,
    "magnitude": 6.6,
    "event_type": "earthquake",
    "event_time_ms": 1790371383309,
    "updated_time_ms": 1790458207826
  },
  {
    "id": "us7000tiqc",
    "url": "https://earthquake.usgs.gov/earthquakes/eventpage/us7000tiqc",
    "place": "49 km NNE of Kainantu, Papua New Guinea",
    "title": "M 6.4 - 49 km NNE of Kainantu, Papua New Guinea",
    "status": "reviewed",
    "depth_km": 104.329,
    "latitude": -5.9021,
    "longitude": 146.0922,
    "magnitude": 6.4,
    "event_type": "earthquake",
    "event_time_ms": 1789895855624,
    "updated_time_ms": 1789982725530
  },
  {
    "id": "us7000ti1p",
    "url": "https://earthquake.usgs.gov/earthquakes/eventpage/us7000ti1p",
    "place": "177 km W of Nikolski, Alaska",
    "title": "M 6.5 - 177 km W of Nikolski, Alaska",
    "status": "reviewed",
    "depth_km": 98,
    "latitude": 52.9564,
    "longitude": -171.5033,
    "magnitude": 6.5,
    "event_type": "earthquake",
    "event_time_ms": 1789654792472,
    "updated_time_ms": 1791037797047
  }
]

Evidence behind every value

• Each run keeps the publisher's exact response, hashed with SHA-256. This sample came from a response with hash 8b295e621638b22853700045a9d5f2592018260ca79416ad707327094f074150.
• Every value records where it came from in that response: a JSON Pointer into the retained capture.
• Each run gets a signed manifest (Ed25519) timestamped by an RFC 3161 authority: this run's manifest hash is 2d74e63c664cfc37f78519d8bd0e58269f33f763f0e0f1ecec8cb657a88c3b0e, timestamped October 6, 2026.
• The compliance state at capture is recorded with the evidence: robots.txt hash and verdict, AI-preference signals, crawler identity and the usage rights below.
• Download any run as an evidence bundle (WACZ) and check it offline, without trusting SourceFinch: sourcefinch verify-bundle run.wacz.

Terms posture and usage rights

USGS-authored data and information are in the U.S. public domain. Credit the U.S. Geological Survey. Third-party copyrighted materials, personnel likenesses and trademarked identifiers have separate restrictions; this recipe extracts seismic data only and excludes logos, images and multimedia.

U.S. Geological Survey. This product is independent of and is not endorsed by USGS.

Usage rights travel with every record SourceFinch delivers (API, exports, webhooks and evidence bundles). They are our documented understanding of the publisher's stated terms, not legal advice.

Reliability

Runs, last 30 days

2

Green

100%

Failed

0

Median run time

0.5 s

Latest run

success, October 6, 2026

Measured on completed runs of this recipe version across SourceFinch, anonymized, within a rolling 30-day window. First successful observation: October 6, 2026. A new recipe has only the history collected since that date; this is not a 30-day uptime guarantee.

Use it

Every surface creates the same monitor from this Verified recipe. Monitors keep record history, report field-level changes and deliver by webhook, export or email. You confirm you have the right to collect the source (rights: true).

{
  "name": "USGS significant seismic events — past month",
  "url": "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/significant_month.geojson",
  "recipe": {
    "mode": "http",
    "format": "json",
    "items": "features[*]",
    "fields": {
      "id": "id",
      "url": "properties.url",
      "place": "properties.place",
      "title": "properties.title",
      "status": "properties.status",
      "depth_km": "geometry.coordinates[2]",
      "latitude": "geometry.coordinates[1]",
      "longitude": "geometry.coordinates[0]",
      "magnitude": "properties.mag",
      "event_type": "properties.type",
      "event_time_ms": "properties.time",
      "updated_time_ms": "properties.updated"
    },
    "required": [
      "id",
      "event_time_ms",
      "updated_time_ms",
      "url"
    ],
    "types": {
      "depth_km": "number",
      "latitude": "number",
      "longitude": "number",
      "magnitude": "number",
      "event_time_ms": "integer",
      "updated_time_ms": "integer"
    }
  },
  "key_field": "id",
  "schedule": "hourly",
  "rights": true,
  "catalog": {
    "slug": "usgs-significant-earthquakes-month",
    "version_id": "b387db49-c9ea-4a24-b776-116a73c5afb1"
  }
}

# the Verified entry (fields, recipe, sample, terms) as JSON
curl https://sourcefinch.com/v1/catalog/usgs-significant-earthquakes-month -H "Authorization: Bearer $SOURCEFINCH_API_KEY"

# create the monitor from source.json (below)
curl -X POST https://sourcefinch.com/v1/sources \
  -H "Authorization: Bearer $SOURCEFINCH_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d @source.json

# then run it now (later runs follow the schedule)
curl -X POST https://sourcefinch.com/v1/sources/$SOURCE_ID/runs \
  -H "Authorization: Bearer $SOURCEFINCH_API_KEY" \
  -H "Idempotency-Key: $(uuidgen)"

sourcefinch login
sourcefinch catalog get usgs-significant-earthquakes-month --source-json > source.json
sourcefinch sources create --file source.json
sourcefinch runs create $SOURCE_ID --wait
sourcefinch records $SOURCE_ID

import { SourceFinch } from "@sourcefinch/sdk";

const sf = new SourceFinch({ apiKey: process.env.SOURCEFINCH_API_KEY });
const entry = await sf.catalog.get("usgs-significant-earthquakes-month");
const source = await sf.sources.create({
  catalog: { slug: entry.slug, version_id: entry.recipe.version_id },
  name: entry.name.slice(0, 100),
  url: entry.acquisition_path.endpoint,
  recipe: entry.recipe.definition,
  key_field: entry.recipe.key_field,
  schedule: entry.recipe.schedule,
  rights: true, // you confirm you have the right to collect this source
});
const run = await sf.runs.wait((await sf.runs.create(source.id)).id);
console.log(run.status);

claude mcp add --transport http sourcefinch https://sourcefinch.com/mcp

# then ask your agent:
"Use SourceFinch to monitor USGS significant seismic events — past month: get_catalog_source usgs-significant-earthquakes-month,
then create_source with its create_source_args (dry run first), then run_source."

Pricing

Each check is one run, whatever the number of records, and failed runs are free. On its default hourly schedule this source uses about 720 runs a month. It uses HTTP acquisition, so no browser runs are needed. See plans.

Related sources

• FEMA disaster declarations · Federal Emergency Management Agency (FEMA)
• USGS magnitude 2.5+ seismic events — past day · U.S. Geological Survey