Installation of tensorflow via pip -- messages?

[Virgil Stokes]

First I upgraded my pip

*C:\Python36>python -m pip install --upgrade pip*
Collecting pip
   Downloading 
https://files.pythonhosted.org/packages/0f/74/ecd13431bcc456ed390b44c8a6e917c1820365cbebcb6a8974d1cd045ab4/pip-10.0.1-py2.py3-none-any.whl 
(1.3MB)
     100% |████████████████████████████████| 1.3MB 685kB/s
Installing collected packages: pip
   Found existing installation: pip 9.0.3
     Uninstalling pip-9.0.3:
       Successfully uninstalled pip-9.0.3
Successfully installed pip-10.0.1

Then I upgraded tensorflow

*C:\Python36>python -m pip install --upgrade tensorflow*
...
...
...
The script tensorboard.exe is installed in 'C:\Python36\Scripts' which 
is not on PATH.
   Consider adding this directory to PATH or, if you prefer to suppress 
this warning, use --no-warn-script-location.

...
...

The scripts freeze_graph.exe, saved_model_cli.exe, tensorboard.exe, 
toco.exe and toco_from_protos.exe are installed in 'C:\Python36\Scripts' 
which is not on PATH.
   Consider adding this directory to PATH or, if you prefer to suppress 
this warning, use --no-warn-script-location.

However, this directory is in my PATH

*C:\Python36>path*
PATH=C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program 
Files (x86)\Intel\iCLS 
Client\;C:\Python36\Scripts\;C:\Python36\;C:\ProgramData\Oracle\Java\javapath;C:\Program 
Files (x86)\Common Files\Intel\Shared Files\cpp\bin\Intel64;C:\Program 
Files\Intel\iCLS 
Client\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\Program 
Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\MiKTeX 
2.9\miktex\bin\x64\;
...
...

Why am I getting this message, that I need to consider adding this 
directory to PATH when it is already in PATH?
Note, all of these *.exe files are in C:\Python36\Scripts.