I have a Robinson Safety Notice to hand - there are 39 of them in the back of the R44 POH.
SN32 commences -
'Flying in high winds or turbulence should be avoided but if unexpected[!] high winds or turbulence are encountered..........'
It then provides the pilot with 6 tips on what to do next.
The key word here is 'unexpected'.
'Severe turbulence' I recall from one of Training Manuals is described as 'a feeling of momentary weighlessness in the seat.'
Robinson - great machine. Fly on nice days, dont overload it, stay current.
Hairy