QuakeIndex

The most recent earthquakes recorded by USGS worldwide or only in the United States, newest first, filtered by minimum magnitude and hours back (up to 7 days). Use for 'any earthquakes today?' questions. Data: USGS, as held by QuakeIndex. Each result includes its source, when the data was last confirmed, and links to the QuakeIndex and USGS event pages. No predictions and no warnings: results name ShakeAlert and MyShake as the sources of earthquake early warning.

{
  "type": "object",
  "properties": {
    "min_magnitude": {
      "type": "number",
      "default": 2.5,
      "minimum": -2,
      "maximum": 10
    },
    "us_only": {
      "type": "boolean",
      "default": false
    },
    "hours": {
      "type": "number",
      "default": 24,
      "minimum": 1,
      "maximum": 168,
      "description": "How far back to look."
    },
    "limit": {
      "type": "integer",
      "default": 20,
      "minimum": 1,
      "maximum": 50
    }
  },
  "additionalProperties": false
}

Earthquakes within a radius of coordinates, a US ZIP code or a US town, over the last 1-365 days, newest first, each with its distance, plus the largest in the window. Data: USGS, as held by QuakeIndex. Each result includes its source, when the data was last confirmed, and links to the QuakeIndex and USGS event pages. No predictions and no warnings: results name ShakeAlert and MyShake as the sources of earthquake early warning.

{
  "type": "object",
  "properties": {
    "latitude": {
      "type": "number",
      "minimum": -90,
      "maximum": 90,
      "description": "Decimal degrees. Give with longitude, OR use zip, OR city."
    },
    "longitude": {
      "type": "number",
      "minimum": -180,
      "maximum": 180
    },
    "zip": {
      "type": "string",
      "description": "US 5-digit ZIP code, e.g. '93555'."
    },
    "city": {
      "type": "string",
      "description": "US town or city, e.g. 'Ridgecrest'. Add state."
    },
    "state": {
      "type": "string",
      "description": "Two-letter code or name, with city."
    },
    "radius_km": {
      "type": "number",
      "default": 50,
      "minimum": 1,
      "maximum": 1000
    },
    "days": {
      "type": "number",
      "default": 30,
      "minimum": 1,
      "maximum": 365
    },
    "min_magnitude": {
      "type": "number",
      "minimum": -2,
      "maximum": 10
    },
    "limit": {
      "type": "integer",
      "default": 20,
      "minimum": 1,
      "maximum": 50
    }
  },
  "additionalProperties": false
}

Everything QuakeIndex holds about one earthquake by USGS event id (or a QuakeIndex/USGS event URL), including every revision it observed — e.g. 'magnitude revised from 4.1 to 3.9'. An automatic solution is a first estimate and says so. Data: USGS, as held by QuakeIndex. Each result includes its source, when the data was last confirmed, and links to the QuakeIndex and USGS event pages. No predictions and no warnings: results name ShakeAlert and MyShake as the sources of earthquake early warning.

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "USGS event id, e.g. 'ci41234567', or a QuakeIndex or USGS event page URL."
    }
  },
  "required": [
    "id"
  ],
  "additionalProperties": false
}

The QuakeIndex score for a US state or county: the last 7 days' earthquake activity ranked 0-100 against that place's own 10-year history, its label (quiet / typical / elevated / unusual) and the normal band for a week. It describes observed activity and is NOT a forecast or a risk rating. A missing score is never zero. Data: USGS, as held by QuakeIndex. Each result includes its source, when the data was last confirmed, and links to the QuakeIndex and USGS event pages. No predictions and no warnings: results name ShakeAlert and MyShake as the sources of earthquake early warning.

{
  "type": "object",
  "properties": {
    "state": {
      "type": "string",
      "description": "Two-letter code or name, e.g. 'CA'."
    },
    "county": {
      "type": "string",
      "description": "Optional county within state, e.g. 'Kern'."
    },
    "place": {
      "type": "string",
      "description": "Alternative free text: 'Nevada' or 'Washoe County, NV'."
    }
  },
  "additionalProperties": false
}

Checks whether USGS has recorded an earthquake that someone who just felt shaking a few minutes ago could have felt: large and close enough for an estimated intensity of MMI 2+ at their location (Atkinson & Wald 2007, the equation USGS Did You Feel It? uses). Answers yes (with the event), not_yet_reported (nothing yet, but small quakes take minutes to be catalogued, so this is not a no), or no; smaller quakes recorded nearby are listed as too small to feel. The result links USGS Did You Feel It? for reporting shaking. Data: USGS, as held by QuakeIndex. Each result includes its source, when the data was last confirmed, and links to the QuakeIndex and USGS event pages. No predictions and no warnings: results name ShakeAlert and MyShake as the sources of earthquake early warning.

{
  "type": "object",
  "properties": {
    "latitude": {
      "type": "number",
      "minimum": -90,
      "maximum": 90,
      "description": "Decimal degrees. Give with longitude, OR use zip, OR city."
    },
    "longitude": {
      "type": "number",
      "minimum": -180,
      "maximum": 180
    },
    "zip": {
      "type": "string",
      "description": "US 5-digit ZIP code, e.g. '93555'."
    },
    "city": {
      "type": "string",
      "description": "US town or city, e.g. 'Ridgecrest'. Add state."
    },
    "state": {
      "type": "string",
      "description": "Two-letter code or name, with city."
    },
    "minutes_ago": {
      "type": "number",
      "default": 5,
      "minimum": 0,
      "maximum": 175,
      "description": "Roughly how long ago the shaking was felt."
    },
    "radius_km": {
      "type": "number",
      "default": 150,
      "minimum": 10,
      "maximum": 500
    }
  },
  "additionalProperties": false
}

The largest earthquakes in QuakeIndex's copy of the USGS catalogue for a US state, county ('Kern County, CA'), town ('Ridgecrest, CA') or ZIP code, with the catalogue span it covers. Data: USGS, as held by QuakeIndex. Each result includes its source, when the data was last confirmed, and links to the QuakeIndex and USGS event pages. No predictions and no warnings: results name ShakeAlert and MyShake as the sources of earthquake early warning.

{
  "type": "object",
  "properties": {
    "place": {
      "type": "string",
      "description": "State, 'County, ST', 'Town, ST' or ZIP."
    },
    "state": {
      "type": "string",
      "description": "Optional state to disambiguate."
    },
    "radius_km": {
      "type": "number",
      "default": 50,
      "minimum": 5,
      "maximum": 300,
      "description": "For a town or ZIP only."
    },
    "limit": {
      "type": "integer",
      "default": 10,
      "minimum": 1,
      "maximum": 10
    }
  },
  "required": [
    "place"
  ],
  "additionalProperties": false
}