SiriusXM Aviation data service elements are updated at multiple rates. Dynamic elements like radar and lightning are updated every 2.5 minutes (twice as fast as ADS-B), while other more stable data elements are updated every 60+ minutes. It's important to note that there are two variables at work with our broadcast weather service: data update rates and transmit intervals. While a product source may be updated every 30 minutes, the same data may be transmitted every 5 minutes to ensure your display is up to date. SiriusXM worked with its avionics partners to arrive at the optimal cadence of updated data and transmit intervals to ensure customers receive critical information in a timely manner.