I think it's a glitch. Notice it's frozen at NNE @ 16kts. This has happened many times before where it's been frozen at say W at 5mph making the whole week green, even though there was a building swell. Micah will fix it soon.
That storm is going to parked right on top of Delmarva, Southern NJ Sunday... When you ever the Low pressure is right over top, than the winds are much more unpredictable as slight shifts in the track changes things signficantly.
Keep an eye out on Sunday for those light winds in the Delmarva area.