Wind Vector Maps

[oldfart]

Hay all
My first post here so be gentle.
I see these animated regional maps that show wind direction and have searched the net for more info in vain.
Can anyone give some hints or information related to this?
Thanks

[Reefmagnet]

Not sure if you are referring to GRIB files? If you don't know what these are perhaps this is the case? If so, have a look at this and Googling will reveal more info as well:

Understanding, Getting and Using GRIB Weather Files / Franks-Weather | The Weather Window

[Cormorant]

Have you looked at passageweather.com?