SparkRadar

Please note there is no license.

This code is open source but not available for redistributing. See more in the DISCLAIMER.md file.

SparkRadar is the free online, reliable, community-supported, multiplatform, easy-to-use weather radar for beginners and pros. Also try the Lite version at lite.sparkradar.app

> https://sparkradar.app

Screenshots (as of March 2026)

Features

• Access to L3 products such as Reflectivity, Velocity, Correlation Coefficient, Differential Reflectivity, Hydrometer Classification, and more at all available tilt levels.
• Access to archive L2 products including Reflectivity, Velocity, and Correlation Coefficient for any station at anytime for years back.
• Multiple advanced tools including a radar inspector, drawing tool, measurement tool, and more.
• Literally instant alerts from the National Weather Service. In my testing, SparkRadar was consistently the first radar to recieve any given alert over RadarScope, WeatherWise, and SupercellWX thanks to SparkAlerts.
• Simplest, most easy to use yet visually appealing radar application to date.
• 100% Free forever with no ads or intrusive trackers.

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Source Code Contents

1. Bug Reporting
2. Feature Request
3. How to Contribute
4. Run SparkRadar Yourself
5. Building SparkRadar

Bug reporting

• Open an issue ("Issues" at the top > "New Issue").
• Describe the issue you are facing. Explain how to reproduce the error.
• Include your operating system, operating system version, browser, and date when the issue was discovered.
• If needed, include screenshots or screen recordings.
• Click "Labels" > "bug" to label your issue as a bug.
• When you are done, click "Create" and I will check out the issue.

Requesting a Feature

• Open an issue ("Issues" at the top > "New Issue").
• Describe the feature you would like to see added in SparkRadar.
• Click "Labels" > "enhancement" to label your issue as a feature request.
• When you are done, click "Create" and I will check out the request.

Contributing

• I will review all pull requests and approve them if they fix an issue or add a feature.

Test

1. Run npm install.
2. Run npm run dev. Code will hot-reload without browser refreshing thanks to Vite. Use npm run host to make the development server accessible on your network.

Build

1. Run npm run build. Builds will appear in a /dist folder.
2. In the dist folder, run python3 -m http.server 8000 then navigate to localhost:8000 in a browser to view the build.