If medium range guidance is right, that's not a necessarily a sustained NW flow pattern as much as it is transient ridging out ahead of shortwaves that are coming across. There are synoptically evident type Dixie severe threats (shortwave troughs, deep sfc lows, etc) being modeled toward the 2nd week to mid month on the GFS, and now in some of the Euro ensemble members.Meanwhile NW flow/MCS pattern setting up