NOAA Storms

NOAA Storm Monitor Plugin + WebApp for Signal K

Features

• Fetches active NOAA storms from CurrentStorms.json
• Integrated Signal K WebApp
• Dynamic warning and alarm levels
• Calculates:
  • Distance from vessel
  • Bearing
  • Storm movement
• Automatic polling intervals:
  • Normal
  • Warning
  • Alarm
• Supports live and test data mode
• Responsive dark-themed Web UI
• Reads vessel position from Signal K
• Combined Signal K plugin + WebApp

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Installation

Signal K Appstore

Install via the Signal K Appstore when available.

Manual installation

cd ~/.signalk
npm install noaa-storms

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Activation

After installation:

1. Open Signal K Admin
2. Go to Plugins → NOAA Storms
3. Enable the plugin
4. The WebApp will appear in the sidebar menu

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WebApp

The WebApp displays:

• Runtime state
• NOAA data source
• Last and next poll
• Vessel position
• Storm overview
• Warning and alarm status
• Polling thresholds
• Live/Test data status

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Configuration

Default values:

Parameter	Default
Warning threshold	400 nm
Alarm threshold	240 nm
Poll normal	720 min
Poll warning	60 min
Poll alarm	15 min

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NOAA Data Source

Default:

https://www.nhc.noaa.gov/CurrentStorms.json

The URL can be changed in the plugin configuration.

The WebApp displays the currently used source as a clickable link.

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Test Data Mode

In test mode, simulated storms are generated.

Purpose:

• Test alarms
• Test UI behavior
• Verify thresholds
• Operate without NOAA connectivity

The WebApp clearly displays:

TEST DATA ACTIVE

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API Endpoints

• /plugins/noaa-storms/status
• /plugins/noaa-storms/data

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Signal K Integration

Uses the following Signal K path:

• navigation.position

The vessel source is detected automatically.

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Project Structure

noaa-storms/
├── index.js
├── package.json
├── public/
│   ├── index.html
│   └── NOAA_noText_logo.svg

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License

MIT License