RadarScope is a specialized display utility for weather enthusiasts and meteorologists that allows you view NEXRAD Level 3 and Super-Resolution radar data along with Tornado, Severe Thunderstorm, Flash Flood and Special Marine Warnings, and predicted storm tracks issued by the US National Weather Service. It can display the latest reflectivity, velocity, dual-polarization, and other products from any NEXRAD or TDWR radar site in the United States, Guam, Puerto Rico, Korea, and Okinawa, as well as reflectivity and velocity data from Environment Canada radars. These aren't smoothed PNG or GIF images, this is native 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, flash flood, and special marine 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 our servers, NOAA's public access web site, or use your Allison House subscriber account for radar data.

The RadarScope Pro subscription is an optional auto-renewing subscription with two different tiers to choose from. Super-res products are still available to all RadarScope users without purchasing a subscription.

RadarScope Pro Tier 1 is an annual subscription that provides access to real-time lightning data that animates along with the radar loop and up to 20 frames of radar data, including *extended loops* of Super-Res Level 2 data. Tier 1 subscribers can also access optional dual-pane and quad-pane modes for viewing multiple radar products side-by-side.

RadarScope Pro Tier 2 is an annual or monthly subscription that combines all the features in Tier 1 with more advanced features, including a 30-day archive of all radar products, estimated hail size contours, rotation (azimuthal shear) contours, and the ability to use subscription features across multiple platforms.

If you choose to buy the RadarScope Pro subscription, it will charged to your iTunes account. The subscription will be auto-renewed within 24 hours prior to the end of the current period at the same price you originally paid. Subscriptions may be managed and auto-renewal disabled via your iTunes Account Settings after the purchase. Once purchased, the subscription cannot be cancelled during the active subscription period.

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What’s New

Version 3.8.7

Fixed a window resizing bug.

Ratings and Reviews

4.3 out of 5
34 Ratings
34 Ratings
Laura Toeniskoetter ,

The only weather app I go for

I have this on all my Apple products. I had the iOS version since 2012 and went back and forth on whether I neeeded this on my mac too. I live in Central Texas (Austin area) and August finally gave me that answer. I puchased the macOS version when Hurricane Harvey was still churning in the Gulf and no one was sure what part of south Texas it would hit. With friends and family back in Houston, I was able to check in on the rain and help a few of them out.

When it comes to radar, I don’t even look at other apps, just Radarscope.

Gimpelson96 ,

Great, but not perfect

I have been a user of the iOS app for about a year now and love it. The desktop version for the Mac is just as good, although there is no way to see your current location on the desktop version. The addition of this feature would be excellent! Otherwise it offers the same great features that the mobile app does. Another thing that would make both better woild be the addition of a more detailed map.

Samuelger ,

Great Radar App

For studying weather and weather systems over large a large area, this app does more than a phenominal job. Has everything any meteorologist/enthusiant could really need. It would be nice if you could add a satalite or road maps layer so when you're studying weather in more smaller geographic zones you can see the impact of that system in relation to what its physically over. On the meteorology side of things, this app couldnt be any better.


Base Velocity, LLC
54 MB
OS X 10.11 or later, 64-bit processor
Age Rating
Rated 4+
2017 © Weather Decision Technologies, Inc.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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