Predict construction delays with Claude, OpenWeather and Slack alerts

This workflow monitors active construction projects in real time, ingests weather forecasts, supplier delivery statuses, and crew/resource availability, then uses Claude AI to predict delay risk, estimate schedule impact, and generate mitigation playbooks for project managers.

How it works

1. Trigger — Webhook (on-demand) or daily schedule kick-off
2. Load Active Projects — Pulls project list from your PM system (Procore / Airtable / Sheets)
3. Fetch Weather Forecast — 7-day forecast for each project site location
4. Fetch Supplier Status — Checks open purchase orders and delivery ETAs
5. Fetch Resource Availability — Crew headcount, equipment, subcontractor status
6. Combine Risk Data — Merges all data streams per project
7. AI Delay Prediction — Claude AI scores delay probability and generates mitigation plan
8. Severity Routing — Routes CRITICAL/HIGH risk projects to immediate alert path
9. Notify Project Managers — Slack alert with risk summary and action items
10. Update PM Dashboard — Writes prediction back to Airtable / Google Sheets
11. Create Risk Ticket — Opens Jira / Linear issue for HIGH+ risk projects
12. Send Daily Briefing — Email digest of all at-risk projects

Setup Steps

1. Import workflow into n8n
2. Configure credentials:
   • Anthropic API — Claude AI for delay prediction
   • OpenWeatherMap API — Site weather forecasts
   • Airtable / Google Sheets — Project & resource data
   • Procore API — Schedule and RFI data (optional)
   • Slack OAuth — Project manager alerts
   • Jira API — Risk issue tracking
   • SendGrid / SMTP — Daily email briefing
3. Set your Airtable base ID and table names
4. Configure Slack channel IDs per severity level
5. Set your risk threshold (default: 60%) in the routing node
6. Activate the workflow

Sample Webhook Payload

{
  "projectId": "PROJ-2025-042",
  "projectName": "Riverside Commercial Tower",
  "siteLocation": { "lat": -33.8688, "lon": 151.2093 },
  "plannedEndDate": "2025-11-15",
  "currentPhase": "Structure",
  "forceRefresh": true
}

AI Prediction Criteria (Claude)

• Weather Risk — Rain days, wind, temperature extremes blocking site work
• Supplier Risk — Lead time slippage, back-orders, sole-source dependencies
• Resource Risk — Labour shortages, equipment breakdown, subcontractor delays
• Schedule Slack — Float remaining vs. risk exposure
• Phase Complexity — Current phase sensitivity to external delays
• Historical Patterns — Similar project delay patterns

Features

• Multi-source real-time risk ingestion
• AI-powered delay probability scoring (0–100%)
• Automated severity routing and escalation
• Mitigation playbook generation per risk type
• Google Sheets / Airtable dashboard sync
• Daily briefing email and Slack digest

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