WHAT IS THE METEOROLOGICAL SCALE IN THE WIND DIRECTION MODEL?

[Sergio Barriga Vitorino]

What is the meteorological scale to which the wind model applies? I have a ground station which does not match the wind direction data for the modeled area.

[idefix37]

@Sergio-Barriga-Vitorino
The wind direction in Windy is displayed as it is usually done in weather maps.
In this example

the wind is blowing from the South direction, from 180°.
Consider that the small arrow is flying in the wind stream, from South to North, as the wind particles do.