/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.]
[ 52.7  54.6  57.3  60.3  63.1  67.4]

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