/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.]
[ 89.4  88.   86.1  84.2  82.1  77.9  73.9]

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