@Boac
Firstly your page ref is wrong - it is 20 not 24. A quick look at the paragraph above your quote shows EXACTLY what I said in my first post:
"Given a generally smooth land surface area, when the wind blows strong and the weather is stormy, the most powerful gusts blow in the same direction as the wind above the boundary layer. In the northern hemisphere the wind veers clockwise about 10° to 20° with respect to the mean wind direction."
If I open the pdf, it's 24/85.
However I don't want't to put the discussion to that low level....
Further on the report (24/85):
For gusts no direction is given. [ …]
Regards