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What Exactly Does XM Weather Show Us?

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Key Takeaways:

  • WxWorx employs extensive redundancy in its data collection and transmission infrastructure, ensuring rapid delivery of weather products to cockpits within 20-30 seconds of processing.
  • Proprietary algorithms are used to process Nexrad data, creating composite images that prioritize safety by displaying the greatest reflectivity from all radar layers, even if the underlying scan data is up to five minutes old.
  • Despite rapid delivery, the weather data is not "real-time" (Nexrad up to 5 minutes old, satellite up to 30 minutes old) and is explicitly intended for situational awareness, not as a tactical tool, requiring pilots to adhere to established safety margins.
  • WxWorx utilizes automated software and a dedicated forecast team to detect and eliminate anomalous propagation (AP) in radar images, continuously working to improve data accuracy.
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WxWorx on Wings, the weather products that XM Satellite Weather downlinks from satellites to our cockpits, is provided to XM by Baron Services’ WxWorx. The weather products are collected at two distinct collection points, one located at WxWorx’s headquarters in Huntsville, Alabama, and the other inside the National Climatic Data Center (NCDC) in Asheville, North Carolina. The two collection points are part of the redundancy that WxWorx has carefully built into its system.

Continuing the effort at redundancy, the weather data is delivered by both satellite and high speed internet to the collection centers. “In most cases,” explained Bob Baron, founder, CEO and president of Baron Services, “we have double redundancy.” As soon as WxWorx receives the information the data stream is automatically sent to XM over a dedicated line and two internet connections. Again, the object is to have no single point of failure. The transmission goes to XM Satellite Weather’s operation center and is inserted into its uplink to both of its satellites and broadcast over all its relay stations on the surface of the earth.

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