30CH 



275: 



250: 



225- 



E 200 



E 



£ 175 -] 



O 



'"5 150 



'.9- 125-1 



o 



a. 10 ° 



75: 



50: 



25 - 



Year Total, mm 



* X1989 1528 



» ©1980-89 1023 



JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 

 Month 



Figure 5. Daily precipitation values with monthly totals 



Wind Speed and Direction 



24. Winds at the FRF are dominated by tropical maritime air masses that 

 create low to moderate, warm southern breezes; arctic and polar air masses 

 that produce cold winds from northerly directions; and smaller scale cyclonic, 

 low pressure systems, which originate either in the tropics (and move north 

 along the coast) or on land (and move eastward offshore) . The dominant wind 

 direction changes with the season, being generally from northern directions in 

 the fall and winter and from southern directions in the spring and summer. It 

 is common for fall and winter storms (northeasters) to produce winds with 

 average speeds in excess of 15 m/sec . 



Measurement instrument 



25. Winds were measured at the seaward end of the pier at an elevation 

 of 19.1 m (Figure 2) using a Weather Measure Corporation (Sacramento, CA) 

 Skyvane Model W102P anemometer. Wind speed and direction data were collected 

 on the FRF computer. The anemometer manufacturer specifies an accuracy of 

 +0.45 m/sec below 13 m/sec and 3 percent at speeds above 13 m/sec, with a 



14 



