Dervived Motion Wind Issues

There are some inaccuracies with the derived motion winds when compared to surface observations. Here is an example with the 1000 mb wind speeds (near surface) and METARs:

Note the significant discrepancy in both speed and direction.

It also appears the clouds are moving southwest to northeast (opposite of the wind barbs).

In addition, I would suggest color-coding by pressure level rather than wind speed because wind barbs (by definition) already provide the wind speed information.

-Lost Met