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 U.S. 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 data from Environment Canada and Australian Bureau of Meteorology 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 weather radar data.

RadarScope displays tornado, severe thunderstorm, flash flood, and special marine warnings issued by the U.S. 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 289 different radars in the United States, Canada, Australia, Korea, Puerto Rico, Guam, or Okinawa. Tap the play button to download and animate over recent images. 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 export the currently displayed map to several common image formats.

Meanwhile, RadarScope will retrieve and display updated data automatically and intelligently (approximately every 2 to 10 minutes, depending on the radar scan strategy).

You can display radar data from our servers, NOAA's public access web site, or your Allison House subscriber account.

RadarScope Pro is an optional auto-renewing subscription with two different tiers to choose from.

RadarScope Pro Tier One is an annual subscription that provides access to real-time lightning data in the U.S. and Canada that animates along with the radar loop and up to 30 frames of radar data, including extended loops of super-resolution data. Tier One subscribers can also access optional dual-pane and quad-pane modes for viewing multiple radar products side-by-side.

RadarScope Pro Tier Two is an annual or monthly subscription that combines all the features in Tier One with more advanced features, including SPC outlooks, local storm reports, hail size and probability contours, and azimuthal shear contours in the U.S., a 30-day archive of all radar products, 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.

DTN is committed to safeguarding your privacy online. Our privacy policy is available for review at:

Please visit our web site for more information.

What’s New

Version 3.9.1

Fixed a few graphics issues on certain versions of macOS.

Ratings and Reviews

4.2 out of 5
44 Ratings

44 Ratings

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.

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.

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
56.2 MB

OS X 10.11 or later, 64-bit processor



Age Rating
Rated 4+
2019 © DTN


  • Family Sharing

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

More By This Developer