Mac App Store

Mac App Store is the simplest way to find and download apps for your Mac.

To download RadarScope from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.


By Base Velocity, LLC

Open the Mac App Store to buy and download apps.


RadarScope is a specialized display utility for weather enthusiasts and meteorologists that allows you to view NEXRAD Level 3 radar data and severe weather warnings. It can display the latest reflectivity, velocity, and other radar products from any NEXRAD radar site in the United States, Guam and Puerto Rico. These aren't smoothed PNG or GIF images, this is real Level 3 radar data rendered in its original radial format for a high level of detail.

Whether you are scanning reflectivity for a mesocyclone's tell-tale hook echo, trying to pinpoint the landfall of a hurricane's eye wall, or looking for small features like velocity couplets in the storm relative radial velocity product, RadarScope gives you the power to view true radial NEXRAD weather radar on your Mac.

RadarScope displays tornado, severe thunderstorm, and flash flood warnings issued by the National Weather Service. You can browse the list of active warnings in the information sidebar, select a warning to view the details, and even zoom to the selected warning on the map.

Zoom in and out on the map using the mouse or pinch gestures on multi-touch trackpads. Click and drag to scroll around the map. Select one of the 155 different radar sites using buttons on the map, the full radar list in the sidebar, or your list of saved favorites in the menu bar. Tap the play button to download and animate up to 20 frames of radar data. Dynamically display the names of over 25,000 cities and towns on the map as you zoom and scroll. Move the cursor over the color legend to see the data value associated with each color. You can also copy the currently displayed map to the clipboard or save it in several common image formats.

Meanwhile, RadarScope will retrieve and display updated data automatically and intelligently (approximately every 5 to 10 minutes, depending on the radar scan strategy).

You can display Level 3 radar data from NOAA's public access web site or use your Allison House subscriber account for radar data (recommended).

Please visit our web site for more information.

What's New in Version 2.3.2

RadarScope 2.3.2 contains enhancements for improved graphics performance on Yosemite and El Capitan.


Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4
Screenshot 5

Customer Reviews

Best thing out there...

Started as a meteorologist in 1989, I remember briefing aircrews and paying for dial up radar images in the Air Force and learning radar on an old FPS-77 radar overseas. I think that radar is now in a museum somewhere, lol. Boy, has technology come a long way since the WSR-88D came on board years ago. After nearly 20 years as both an Air Force and on-air personality, this app has been on my phone and now my IOS device. It’s by far and away the app that makes me feel right at home when diagnosing the weather now for me and my family. Thank you to the developers for providing a stellar product for those of us that not just look at the storm but truly know what we are looking at and utlize the tools you developed the way you intended. Great work, I’m a huge fan!

Missing Certain Features

RadarScope for my iPhone was the first application I ever purchased. It’s never failed to impress me. That’s why when I finally purchased it with the Pro subscription for my new MacBook Pro I was disappointed to see it lacks certain features that the iOS app has, namely being able to view two products at once via a split screen option, loop scrubbing, and saving a radar loop as a video file. I notice the last update to the OS app was in November 2015. I really like this app, and it’s disappointing to see such a lag in updates. I understand mobile apps are in higher demand, but I hope these features would be added to the OS app soon.

Great radar app

Love radarscope, it’s basically running 24/7 on my Macbook Pro. My only gripe about paying for level 2 data is that storm relative velocity is NOT in level 2 detail, it switches back to level 3 data…WHY? It has SuperRes Velocity in level 2, why can’t storm relative velocity also be in level 2? Fix this, and it’ll be a 5 star app.

View in Mac App Store
  • $29.99
  • Category: Weather
  • Updated:
  • Version: 2.3.2
  • Size: 28.7 MB
  • Language: English
  • Seller:

Compatibility: OS X 10.9 or later, 64-bit processor

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. RadarScope Pro Subscription for Mac$9.99