If you look at the water vapor carefully tonight you will see it's a very fluid environment out there and it looks to me a new upper level low .. steering mechanism may be forming to the North of the storm... not close enough to hurt it but well........ it's real fluid and I don't see a wnw path and what looked a bit like a weak, weak high to the north of the storm.. or dry air looks weaker and is filling in from the outflow off of Ernesto.

Looked like it was going west on some images but it seems whats you see isn't always what is really going on..

Which is why we have RECON

and dropsondes..