The word "storminess" refers to the condition of having storms or turbulent weather. It describes the state of being stormy, characterized by strong winds, heavy rain, and thunderstorms. Full definition
While 1741 is noted as the year the current intensification began, the paper also references an increase in storminess in the year 1825. (sciencedaily.com)
They found no long - term trend during the last 100 years, but a clear rise since a minimum of storminess in the 1960s, which is consistent with the rise in extreme geostrophic wind found by Jones et al. (1999c). (ipcc.ch)
However, there is no evidence of increased storminess over the last 30 years. (junksciencearchive.com)