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AI-generated weather analysis with NWS alerts, radar imagery, and Home Assistant

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AI-generated weather analysis with NWS alerts, radar imagery, and Home Assistant preview
Open on n8n.io

Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

This n8n template demonstrates how you can generate an AI produced weather analysis of your local radar loop and home assistant precipitation sensor(s) to keep your family informed of National Weat...

Best for

  • Personal Productivity automation workflows
  • AI Summarization automation workflows
  • advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.webhook, n8n-nodes-base.httprequest, n8n-nodes-base.splitout, n8n-nodes-base.set, n8n-nodes-base.filter, @n8n/n8n-nodes-langchain.openai, n8n-nodes-base.homeassistant, n8n-nodes-base.merge

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Carl Danley.

Original n8n.io source

1.1 Workflow description

Title
AI-generated weather analysis with NWS alerts, radar imagery, and Home Assistant
Workflow name
AI-generated weather analysis with NWS alerts, radar imagery, and Home Assistant

Overview

This n8n template demonstrates how you can generate an AI-produced weather analysis of your local radar loop and home assistant precipitation sensor(s) to keep your family informed of National Weather Service Alerts.

With as crazy as things have been lately in the open world, how will you and your family know when a severe or extreme alert impacts your area?

How it Works

  • This workflow is triggered by a webhook which takes a latitude and longitude json payload to identify the area for monitoring.
  • Then, it fetches the National Weather Service Alerts and filters them down to alerts which are currently active and their severity.
  • Next, it fetches the local precipitation value from your Home Assistant instance (a value like "Light Rain" or "No Rain", etc) coupled with your respective weather.gov radar loop image.
  • It then submits this data to OpenAI and produces an output regarding the image analysis.
  • Finally, it takes this analysis and uses OpenAI to again generate a short summary.

How to Use

  • Import the workflow into your n8n instance
  • Update the credentials in the problematic nodes
  • Make sure you adjust the radar loop image that is being used

Requirements

  • A Home Assistant Instance (you could remove this data if you wanted)
  • An OpenAI account for LLM and image analysis

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Webhook

Type / Role
n8n-nodes-base.webhook - webhook
Config choices
Version 2

Block 2 - Get NWS Alerts

Type / Role
n8n-nodes-base.httpRequest - httpRequest
Config choices
Version 4.2

Block 3 - Split Out

Type / Role
n8n-nodes-base.splitOut - splitOut
Config choices
Version 1

Block 4 - Remove Irrelevant Fields

Type / Role
n8n-nodes-base.set - set
Config choices
Version 3.4

Block 5 - Filter by Severity

Type / Role
n8n-nodes-base.filter - filter
Config choices
Version 2.2

Block 6 - Filter by Effective

Type / Role
n8n-nodes-base.filter - filter
Config choices
Version 2.2

Block 7 - Filter by Status

Type / Role
n8n-nodes-base.filter - filter
Config choices
Version 2.2

Block 8 - Fetch Weather.gov Radar Loop

Type / Role
n8n-nodes-base.httpRequest - httpRequest
Config choices
Version 4.2

Block 9 - Filter by Expired

Type / Role
n8n-nodes-base.filter - filter
Config choices
Version 2.2

Block 10 - Analyze Radar Image

Type / Role
@n8n/n8n-nodes-langchain.openAi - openAi
Config choices
Version 1.8

Block 11 - Map JSON Response

Type / Role
n8n-nodes-base.set - set
Config choices
Version 3.4

Block 12 - Get Local Weather Precipication

Type / Role
n8n-nodes-base.homeAssistant - homeAssistant
Config choices
Version 1

Block 13 - Merge JSON with Image

Type / Role
n8n-nodes-base.merge - merge
Config choices
Version 3.2

Block 14 - Merge Radar Analysis with NWS Data

Type / Role
n8n-nodes-base.merge - merge
Config choices
Version 3.2

Block 15 - OpenAI Chat Model

Type / Role
@n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices
Version 1.2

Block 16 - Code

Type / Role
n8n-nodes-base.code - code
Config choices
Version 2

Block 17 - Aggregate

Type / Role
n8n-nodes-base.aggregate - aggregate
Config choices
Version 1

Block 18 - Generate a Summary

Type / Role
@n8n/n8n-nodes-langchain.chainSummarization - chainSummarization
Config choices
Version 2.1

Block 19 - Map JSON to Response

Type / Role
n8n-nodes-base.set - set
Config choices
Version 3.4

Block 20 - Sticky Note

Type / Role
n8n-nodes-base.stickyNote - stickyNote
Config choices
Version 1

3. Summary Table

Workflow AI-generated weather analysis with NWS alerts, radar imagery, and Home Assistant
Complexity advanced
Nodes 20
Categories Personal Productivity, AI Summarization
Author Carl Danley
Published 19 Jul 2025

4. Reproducing the Workflow from Scratch

  1. 1. Download the workflow JSON

    Use the JSON export at /data/workflows/6188/6188.json as the source template for this automation.

  2. 2. Import the template into n8n

    Open n8n, import the downloaded JSON, and review each node before activating the workflow.

  3. 3. Configure credentials and variables

    Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.

  4. 4. Test with sample data

    Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.

  5. 5. Activate and monitor

    Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Frequently asked questions

What does AI-generated weather analysis with NWS alerts, radar imagery, and Home Assistant do?

This n8n template demonstrates how you can generate an AI produced weather analysis of your local radar loop and home assistant precipitation sensor(s) to keep your family informed of National Weat...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Personal Productivity, AI Summarization use case.