Five Fathom Bank Lightship (fig. 14, table 

 14)- -March, early April, and late December 

 surface water temperatures were below the 

 mean at Five Fathom Bank, while May through 

 October readings were above. At the bottom 

 two separate intrusions of cold water appeared 



in early June and early July. The 10-day mean 

 bottom maximum of 68.4° F. was the highest 

 recorded in 5 years. Salinity was slightly 

 lower than usual in the early autumn, but 

 otherwise showed little departure from the 

 previous records. 



80 



it 70 



? 



2 50 



8 



60 



40 



30 



SURFACE T. °F 



Uj 



u. 





20 



40 



60 



80- 



ii-llilllKi'l ! 

 \\w\ 



wm 



"\\\W 



wV\ v 



JAN. 



FEB. 



MAR. 



APR. 



MAY 



JUN. 



JUL. 



AUG. 



SEP. 



OCT. 



NOV. 



DEC. 



Figure 14.— Five Fathom Bank Lightship. (Dashed line in upper diagram mean for period 1950-59.) 



35 



