The article analyzes changes in the steepness of the fronts of troughs, crests, and individual waves, as well as their horizontal and vertical asymmetry, during the Black Sea storm on November 25–26, 2023. Statistics are calculated for waves whose heights exceed the significant height {Hₒ}. The analysis is based on direct wave measurement data obtained at a stationary oceanographic platform moored near the southern coast of Crimea. All stages of storm development are characterized by a wide range of steepness values of individual high waves S. It is shown that the maximum values of the average steepness S are observed at the storm development stage; max S is reached earlier than {Hₒ}. The average horizontal asymmetry (the ratio of the steepness of the leading and trailing fronts) is greater than one; the horizontal asymmetry of the crest is higher than the asymmetry of the trough. The average vertical asymmetry (the ratio of the steepness of the crest and trough) is above a level of 1. 5.
Zapevalov et al. (Wed,) studied this question.