through September. In January through March and October through December for 

 combined years, the northerly direction dominated; and the magnitudes were the 

 greatest. The strongest southerly winds occurred in April through June. As 

 mentioned, aiuiual wind patterns were consistent from year to year (Figure 6). 

 The seasonal variation shown in Figure 8 for 1981 changed from southerly in 

 the warm months to northerly in the cold with an overall western dominance as 

 is typical; however, as Figure 9 shows, monthly patterns can vary signifi- 

 cantly. In January 1981, the wind blew from the west and from the south- 

 southwest much more frequently than during 1980. The frequency of winds from 

 north through northeast was approximately the same between the years for 

 January, but winds were much more unidirectional from the north in 1981. For 

 28 percent of the time during February 1981, the winds blew from the south- 

 east, while this occurred for only 13 percent of the time during February 

 1980; February 1981 was the month during 1980-1981 for which winds from the 

 southeast were most frequently observed. During July 1981, the winds were 

 more evenly distributed than during July 1980. Other months throughout the 

 year showed only minor differences. Monthly wind roses for the combined years 

 1980 plus 1981 and 1981 alone are shown in Figures 10 and 11, respectively. 



Wave Data 



69. This section presents summaries of the wave data collected at the 



FRF during 1981. Annual and seasonal statistical summaries given below show a 



temporal and spatial variability of the wave climate at the FRF. Appendix B 



contains summaries for each gage which include statistics for 1980 and 1981 



data combined, wave roses, persistence tables, and sample storm spectra for 



dates when H exceeded 2.0 m at the seaward end of the FRF pier. Appen- 

 m 



dix D contains hourly wave data summaries for the storm dates in 1981. 

 Wave height 



70. 1981 wave statistics (see tabulation below) vary as a function of 

 gage installation: generally, as water depth (and distance from shore) 

 increases so does the average annual H value. 



33 



