Would it be possible to add range rings in addition to the custom
  points (so it would be a lat/lon plus a radius)?  We are looking at
  using WSUP for tropical coordination, and range rings would allow
  users to capture the radius of maximum winds at each forecast time
  step to see if the NBM circulation is within the radius of maximum
  winds and would be a good candidate for background winds.
Range rings might also enable users to use WSUP for additional IDSS
  purposes (for example, if there's an outdoor event watching a specific
  radius for some kind of hazard).
I feel like I've seen something like this before, so if I'm missing
  something that already exists, please let me know.
 
Thanks,
Brian 
SRH STSD