22. The winter "storm season" is defined to be the months from October 

 through April. With this definition, it is possible to consider only those 

 months that would be expected to produce extremes in the measured data. This 

 eliminates possible biases due to the mixture of monthly maxima resulting from 

 storms with those resulting from regular conditions. 



Extremal Plotting of Monthly Maxima 



23. The monthly maxima were fit to the Weibull probability model with 

 shape parameter C = 1 , and C = 2 and to the Extremal Type I . As for the 

 hindcast data, the Extremal Type I displays a better fit than does the 

 Weibull. Figures 5 through 10 represent the extremal plots for the measured 

 data. The extreme wave conditions and associated return periods given in 

 Table 11 were computed from the fitted Extremal Type I model. The values 



Table 11 



Significant Wave Height and Return 



Period for Measured Data 







Significant 



Return Period 





Wave Height 



years 



Inner Buoy 



m 







1 





1.8 



2 





2.0 



3 





2.2 



4 





2.3 



5 





2.4 



10 





2.6 



50 





3.2 



100 



Outer Buoy 



3.5 



1 





4.5 



2 





5.4 



3 





5.9 



4 





6.3 



5 





6.5 



10 





7.4 



50 





9.3 



100 





10.1 



22 



