/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.   9.  21.  33.  45.]
[-115.1 -117.4 -120.8 -124.4 -128. ]

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