FIS-B
incl ADS-B weather:
- NEXRAD Radar
- METARs
- TAFs
- Winds Aloft
- PIREPs
- AIRMETs
- SIGMETs
- Convective SIGMETs
- Icing and Turbulence forecasts
- cloud tops
- NOTAMs
- Special Use Airspace
- TFRs
Reception is based on line of sight, so higher altitude improves reception and mountains prevent reception. Almost the entire country has coverage at 3-5,000 feet AGL.