I just looked through the CMISS analysis graphics and it looks like it might be getting sheared slightly to the SW. The vortex movement, and I'm assuming the low pressure center movement, is W, but the convection is moving SW, indicating shear.

Also, if you look at the vorticity centers at the 850mb and 700mb level, you will see that the 700mb is just to the SW of the 850mb level, also indicating shear.

At least I think that is what I am seeing

--RC

Edit: Take this post with question; my next post is on Quickscat which is interesting and throws this one into doubt.