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

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

Setup Steps

Import workflow into n8n 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 Set your Airtable base ID and table names Configure Slack channel IDs per severity level Set your risk threshold (default: 60%) in the routing node 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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