Light Turbulance gives ripples on the martini's Moderate gives white caps. & oh severe is usually classed as temporaly out of control.
I notice over the years that what is now moderate we used to call light and severe what we used to call moderate. In the days of lower level flying on the "big" pistons most pilots were used to turbulance.
Today it is really the far East guys who are more used to turbulance than the trans atlantic lot. So definitions are bound to vary. What you are used to lowers your intensity report.
