Baron 55/Cochise
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Private
Flight Crew Last 90 Days 18; Flight Crew Total 1200; Flight Crew Type 250
Confusion; Human-Machine Interface; Situational Awareness; Troubleshooting
Aircraft Equipment Problem Less Severe
General None Reported / Taken
Aircraft; Environment - Non Weather Related
Weather was clear; light winds; no turbulence.  XM weather on 530W and portable Garmin 696 indicated no precipitation at all. ADS-B system showed a line of magenta with red and yellow levels of intensity at our location. This indication was completely inaccurate; as there was no precipitation. Two other aircraft in our group reported the same inaccurate display. We were midway between JWN and M93 in CAVU conditions.Was the ADS-B system hacked? How can the system present such misinformation? I now have no confidence in ADS-B weather depiction. If it can report significant fronts that do not exist; can it report clear conditions when there is bad weather?Also; hours after the flight; I called the flight up on FlightAware and it showed weather that did not exist.  I presume that FlightAware uses the same data that ADS-B is using.
Reporter stated that he has noticed that; in general; ADS-B display seems to depict weather at a higher level of intensity compared to other weather depiction sources. Due to the similarity in the level of weather shown on FlightAware and ADS-B; reporter wondered if the weather data source was the same for both. At the time of the event; there was no precipitation within an 80 NM radius; and the reporter thought it might be an issue with the refresh rate of ADS-B weather date.
BE-55 pilot reported that while flying in clear weather conditions; the ADS-B display showed a line of heavy precipitation that did not exist at the current aircraft position.