ForeFlight Mobile displays composite reflectivity radar data for:
- The Continental United States
- Puerto Rico
- the Western Bahamas
Radar coverage in the 50 US states typically shows cell tops above 20,000' as a 3-digit number indicating the top of the cell in hundreds of feet. e.g.: 329 = the cell top is 32,900'.
Radar coverage over Canada, Puerto Rico, and Guam does not include the cell tops, except occasionally in a narrow band near the Canada-US border, where cell tops may be able to be determined based on data from US-based radar transmitters.