Table 4 

 Monthly Precipitation Extremes and Means,'" 1978-1981 







1978 



-1981 







Month 



Maxima , mm 



Minima, mm 



Mean, mm 



1981 



Jan 



180 





45 



105 



45 — 



Feb 



94 





46 



69 



46*-"- 



Mar 



137 





48 



85 



48** 



Apr 



112 





46 



76 



46** 



May 



239 





39 



117 



43 



Jun 



130 





60 



84 



76 



Jul 



200 





64 



109 



200t 



Aug 



220 





36 



88 



220t 



Sep 



160 





5 



52 



5** 



Oct 



73 





25 



49 



40 



Nov 



130 





67 



98 



67** 



Dec 



127 





47 



77 



127 



Total 



1,009 



963 



* Monthly average: 84 mm; annual average: 1,009 mm. 

 ^ Minima for the 1978-1981 period, 

 t Maxima for the 1978-1981 period. 



location is important to most studies of hydrodynamic and sedimentary pro- 

 cesses. In this section, wind characteristics at the FRF are discussed based 

 on measurements made four times per day during 1980 and 1981. Over these 

 2 years , the annual distribution of wind speeds and directions at the FRF 

 showed a consistent pattern. The winds blew onshore from the north side of 

 the pier more often (32 percent) than from the south (14 percent) (Figure 6). 

 Winds blowing from the north side of the pier — i.e., north through east- 

 northeast--produced onshore waves and southerly directed surface currents, 

 while winds from the south side--i.e., east through south- southeast — produced 

 onshore waves and northerly directed surface currents. Over 53 percent of the 

 time, winds were directed offshore and did not produce waves onshore. 



67. The strongest winds during 1980 and 1981 tended to blow from the 

 north-northeast during January through March (Figure 7). High speeds and 

 frequent northerly directions during October through December and January 



29 



