/home/critechuser/cycloneSurge/Python/vtcalc.py:19: FutureWarning: comparison to `None` will result in an elementwise object comparison in the future.
  if lon == None :

****************
[  0.  12.  24.  36.  48.  72.  96.]
[ 51.1  51.6  52.7  54.7  57.5  63.6  67.7]

****************