AMV depict pre-frontal trough

Atmospheric Motion Vectors are nicely illustrating the pre-frontal trough across Arkansas. Of particular interest is the illustration of the trough with height. For the low level winds (blue) the pre-frontal trough can be seen clearly...particularly in northeast Texas where southwesterly winds are occuring ahead of the trough and northerly winds behind the trough. Looking at upper level winds however (green, red, pink), most remain in a southwesterly direction, indicating that the trough aloft remains to the northwest. This makes sense because the frontal boundary will be tilted with height back towards the northwest. The screenshot is below. - Jason Bourne