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SteepAtticStairs / repository
A clean, simple, but powerful weather toolkit for the web browser. Includes NEXRAD parsing and plotting, doppler velocity dealiasing, weather alerts, real time lightning data, METAR station data, and much more.
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A clean, simple, but powerful weather toolkit for the web browser. Includes NEXRAD parsing and plotting, doppler velocity dealiasing, weather alerts, real time lightning data, METAR station data, and much more.
AtticRadar's source code is published here on GitHub for people to explore and see how everything works under the hood. If you're interested in using some of AtticRadar's code in your project, please reach out to me first. My email is open at steepatticstairs@gmail.com, or you can send me a message on Discord at steepatticstairs if you'd prefer.
You can find the app live here: https://atticradar.steepatticstairs.net
The libraries that parse NEXRAD files client-side were provided by two python packages, which can be found here:
Inspiration for the app to be created, and some of the code for WebGL rendering, came from QuadWeather's radar app, which can be found here: https://radar.quadweather.com
Virtually all of the code for the doppler dealiasing algorithm comes from pyart. I used their region-based dealiasing algorithm. I go into more depth about the process behind this in the JavaScript dealiasing file in this project.
The Storm-Relative Velocity implementation comes from @slash2314! Here's the pull request link for more details.
Thanks to @wolf20482 for fixing some serious radar accuracy bugs!
git clone https://github.com/SteepAtticStairs/AtticRadar.git
cd AtticRadar
npm install
npm run build
npm run start
I use http-server as my local dev server on port 3333, so you can go to localhost:3333 to view your local copy of AtticRadar.
Browserify is used in AtticRadar to implement a moduling system. npm run build bundles the project with Browserify to be used in distribution.
You can also run
npm run serve
to use watchify (another project by Browserify) to auto-bundle the project every time you make a change.
Jul 13 2022 - On that morning, I stumbled across QuadWeather's radar app, which was still in development, while browsing Twitter. This was the initial inspiration to create AtticRadar (called "NexradJS" at the time).Sep 10 2022 - Renamed this project from "NexradJS" to "AtticRadar"Jun 28 2023 - Updated URL from "steepatticstairs.net/AtticRadar" to "atticradar.steepatticstairs.net"Jul 8 2025 - The project's 1000th commit was madeThis app is a hobby project that doesn't follow rigorous saftey testing, so the accuracy or 24/7 availability of AtticRadar is not always guaranteed. 🚨 AtticRadar should NEVER be used for life-saving information! ALWAYS go to the NWS or other sources with accurate data and information!!! 🚨 In my mind, AtticRadar is more of a proof-of-concept rather than an app to use in the field. Some apps with data that is known to be accurate include radar.weather.gov, RadarScope, RadarOmega, WeatherWise, QuadWeather, and supercell-wx.