How far outside the continental US are the XM WX weather data available?
The radar data is derived from the 145 ground-based sites in the U.S. NEXRAD network, which covers the contiguous United States, and up to approximately 150 miles outside the borders of the 48 States and coastal waters depending on the actual location of the Doppler Radar. The lightning data covers up to approximately 200 miles outside the borders of the 48 States. Other products when and where available such as winds aloft, fronts, infrared satellite mosaic, sea temps, wave heights etc. are generally viewable to about 500-800 miles outside of the borders of the 48 States. Coverage is not available in or around Hawaii. This information should serve as a general guideline with the understanding that while the coverage may well exceed 500-800 miles in some case, depending on antenna type and placement, we cannot provide specific coverage availability and details for locations outside of the borders of the 48 States other than what we have stated here.
