What RadarScope does on Mac
RadarScope is a professional weather radar app for macOS that displays single-site radar data in its original radial format, with severe weather warnings, storm tracks, and tools for meteorologists, storm spotters, and serious weather enthusiasts.
Published by Base Velocity, LLC (DTN), RadarScope is an AMS-award-winning visualization tool built as a native Apple-platform app. The base purchase includes US, Canadian, and selected international radar products, six-frame loops, NWS storm tracks with hail and mesocyclone attributes, inspector and distance tools, color palettes, and integrations with Spotter Network and mPING. Data updates automatically every two to ten minutes depending on each radar’s scan strategy.
Typical Mac workflow
On Mac you open a nearby radar site, step through reflectivity or velocity products, and watch loops for hook echoes, velocity couplets, or debris signatures. Warnings for tornadoes, thunderstorms, flash floods, and other hazards appear on the map. Inspector tools let you probe values at a point, measure distance, and compare products. Optional RadarScope Pro subscriptions add longer loops, lightning, outlooks, satellite and MRMS layers, archives, and multi-pane layouts on larger screens.
Version 5.5.5
Released March 18, 2026, build 5.5.5 is a bug-fix and polish update. Apple’s release notes report restored hail attributes in storm tracks, fixed statement text with the Weather Pulse feed, corrected risk levels in the outlook inspector, metric-unit handling for precipitable water in sounding details, an updated RTMA wind palette, and corrected location names.
Licensing and requirements
RadarScope requires macOS 13.5 or later and costs $9.99 upfront on the Mac App Store with optional Pro Tier One ($9.99/year) and Pro Tier Two ($14.99/month or $99.99/year) subscriptions. The app may use your location in the background, which can affect battery life. The developer states that no data is collected from the app per the App Store privacy label.
