/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.   57.   69.   93.  117.]
[-87.8 -88.1 -88.6 -89.4 -90.4 -91.1 -91.4 -92.1 -92.7]

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