Hourly Earthquake Alerts to Supabase

The workflow JSON

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{
  "name": "Earthquake War Room - Supabase",
  "nodes": [
    {
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "cronExpression",
              "expression": "0 * * * *"
            }
          ]
        }
      },
      "id": "node-0001",
      "name": "Every Hour",
      "type": "n8n-nodes-base.scheduleTrigger",
      "typeVersion": 1.1,
      "position": [
        100,
        300
      ]
    },
    {
      "parameters": {
        "url": "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/4.5_hour.geojson",
        "method": "GET",
        "options": {}
      },
      "id": "node-0002",
      "name": "Fetch USGS Feed",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [
        320,
        300
      ]
    },
    {
      "parameters": {
        "jsCode": "const features = $input.first().json.features || [];\n\nif (features.length === 0) {\n  return [{ json: { quakes: [], count: 0 } }];\n}\n\nconst quakes = features.map(f => ({\n  id: f.id,\n  magnitude: f.properties.mag,\n  place: f.properties.place,\n  severity: f.properties.mag >= 7 ? 'MAJOR' : f.properties.mag >= 6 ? 'STRONG' : f.properties.mag >= 5 ? 'MODERATE' : 'LIGHT',\n  depth_km: parseFloat(f.geometry.coordinates[2].toFixed(1)),\n  lat: parseFloat(f.geometry.coordinates[1].toFixed(4)),\n  lon: parseFloat(f.geometry.coordinates[0].toFixed(4)),\n  time: new Date(f.properties.time).toISOString(),\n  drama: f.properties.mag >= 7 ? 'THIS IS FINE. (It is not fine.)' : f.properties.mag >= 6 ? 'Nature just cleared its throat.' : f.properties.mag >= 5 ? 'Earth had a little stretch.' : 'A gentle reminder the planet is alive.',\n  usgs_url: f.properties.url\n}));\n\nreturn quakes.map(q => ({ json: q }));"
      },
      "id": "node-0003",
      "name": "Parse and Classify",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        540,
        300
      ]
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "strict"
          },
          "conditions": [
            {
              "id": "cond-0001",
              "leftValue": "={{ $json.magnitude }}",
              "rightValue": 4.5,
              "operator": {
                "type": "number",
                "operation": "gte"
              }
            }
          ],
          "combinator": "and"
        }
      },
      "id": "node-0004",
      "name": "Valid Quake?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2,
      "position": [
        760,
        300
      ]
    },
    {
      "parameters": {
        "url": "=https://YOUR_SUPABASE_URL.supabase.co/rest/v1/earthquakes",
        "method": "POST",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "apikey",
              "value": "YOUR_SUPABASE_ANON_KEY"
            },
            {
              "name": "Authorization",
              "value": "=Bearer YOUR_SUPABASE_ANON_KEY"
            },
            {
              "name": "Content-Type",
              "value": "application/json"
            },
            {
              "name": "Prefer",
              "value": "resolution=merge-duplicates"
            }
          ]
        },
        "sendBody": true,
        "bodyParameters": {
          "parameters": []
        },
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify({ id: $json.id, magnitude: $json.magnitude, place: $json.place, severity: $json.severity, depth_km: $json.depth_km, lat: $json.lat, lon: $json.lon, time: $json.time, drama: $json.drama, usgs_url: $json.usgs_url }) }}",
        "options": {}
      },
      "id": "node-0005",
      "name": "Insert into Supabase",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [
        980,
        200
      ]
    },
    {
      "parameters": {
        "jsCode": "console.log('Skipped low magnitude or invalid entry at ' + new Date().toISOString());\nreturn [{ json: { status: 'skipped', timestamp: new Date().toISOString() } }];"
      },
      "id": "node-0006",
      "name": "Skip Low Magnitude",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        980,
        420
      ]
    }
  ],
  "connections": {
    "Every Hour": {
      "main": [
        [
          {
            "node": "Fetch USGS Feed",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Fetch USGS Feed": {
      "main": [
        [
          {
            "node": "Parse and Classify",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Parse and Classify": {
      "main": [
        [
          {
            "node": "Valid Quake?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Valid Quake?": {
      "main": [
        [
          {
            "node": "Insert into Supabase",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Skip Low Magnitude",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "staticData": null,
  "tags": [],
  "triggerCount": 1,
  "versionId": "1"
}

About this workflow

Earthquake War Room - Supabase. Uses httpRequest. Scheduled trigger; 6 nodes.

Source: https://github.com/WitchYas/earth-is-alive/blob/ad4857de2c0a0e47ed9b4da3b89b15cc36202d71/n8n/earthquake_workflow.json — original creator credit. Request a take-down →

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