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Send severe weather alerts from Visual Crossing to Telegram

Razvan BaraRazvan Bara
32 views
2/3/2026
Text ProcessingOpenAIMessage RetrievalAI AssistantAPI
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How it works

This workflow automates the process of fetching weather forecasts for your home location, including severe weather alerts, and sends timely notifications. It uses the Visual Crossing API for detailed weather data and integrates with Telegram (or other messaging services) for messaging and alerts.

Step-by-step

In summary, the workflow runs every hour, grabs the current day's weather conditions for [your city/location of interest], and returns only those items that truly contain one or more weather alerts.

📅 Step 1: Hourly Trigger The workflow begins with the Hourly Trigger node, which is a scheduleTrigger. This node acts as the clock that initiates the entire process at regular hourly intervals.

🌤️ Step 2: Fetch Weather Data Immediately after the trigger, the workflow moves to the Meteo node, an httpRequest. This node makes an external API call to fetch weather data for your specified location.

API Used: Visual Crossing Web Services

Authentication: Uses your API key (key=[API KEY])

Response format: JSON

🌪🌀 Step 3: Check for Severe Weather The JSON weather data output is analyzed, and if severe weather conditions or alerts are detected, the workflow sends the alert via your preferred communication channel(s).

Optional

You can replace the Telegram node with email, WhatsApp, SMS notifications, or add multiple notification nodes to receive severe weather alerts across all desired channels.

n8n Workflow: Severe Weather Alerts from Visual Crossing to Telegram

This n8n workflow automates the process of fetching severe weather alerts from the Visual Crossing API and sending them as notifications to a specified Telegram chat. It's designed to keep you informed about critical weather conditions in a timely manner.

What it does

  1. Schedules a Check: The workflow is triggered on a predefined schedule (e.g., every hour) to regularly check for new weather alerts.
  2. Fetches Weather Data: It makes an HTTP request to the Visual Crossing weather API to retrieve current weather conditions and alerts for a specified location.
  3. Processes Alerts: A Function node processes the raw API response, extracting relevant severe weather alert information.
  4. Filters for Severe Alerts: An If node checks if any severe weather alerts are present in the processed data.
  5. Sends Telegram Notification: If severe alerts are found, a formatted message containing the alert details is sent to a configured Telegram chat.

Prerequisites/Requirements

  • n8n Instance: A running instance of n8n.
  • Visual Crossing API Key: An API key from Visual Crossing to access their weather data.
  • Telegram Bot Token: A Telegram bot token to send messages.
  • Telegram Chat ID: The chat ID of the Telegram group or user where alerts should be sent.

Setup/Usage

  1. Import the Workflow:
    • Download the workflow JSON.
    • In your n8n instance, go to "Workflows" and click "New".
    • Click the three dots (...) in the top right and select "Import from JSON".
    • Paste the workflow JSON or upload the file.
  2. Configure Credentials:
    • HTTP Request Node (Visual Crossing):
      • Edit the "HTTP Request" node.
      • Update the URL to include your Visual Crossing API key and the desired location (latitude and longitude). Example: https://weather.visualcrossing.com/VisualCrossingWebServices/rest/services/timeline/[LATITUDE],[LONGITUDE]?unitGroup=us&key=[YOUR_VISUAL_CROSSING_API_KEY]&contentType=json&include=alerts
    • Telegram Node:
      • Edit the "Telegram" node.
      • Select or create a new Telegram API credential. You will need your Telegram Bot Token.
      • Enter the Chat ID where you want the alerts to be sent.
  3. Configure Schedule:
    • Edit the "Schedule Trigger" node.
    • Set your preferred interval for checking weather alerts (e.g., every 1 hour, every 30 minutes).
  4. Activate the Workflow:
    • Save the workflow.
    • Toggle the workflow to "Active" to start it.

The workflow will now automatically check for severe weather alerts at your specified location and send notifications to your Telegram chat when they occur.

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