48°N. Ice conditions for 12 and 24 June are shown 

 in figures 9 and 18. These show that most of the ice 

 was well north of the major shipping lanes and 

 with the increased water temperatures in that area 

 few bergs were likely to survive the drift south and 

 become a hazard. 



The average surface pressure shown in figure 29 

 indicate a return to near normal conditions. The 

 onshore breeze was no longer a predominant force 

 but, as mentioned, the higher water temperatures 

 took over where the breeze left off in preventing 

 southward drift. 



July-August 1979 



July was the last month that Ice Patrol 

 conducted reconnaissance operations; the last 



flight was made on 19 July with no icebergs 

 sighted in the vicinity of the Grand Banks. An 

 estimated 3 icebergs drifted south of 48°N during 

 July. Sea ice and iceberg conditions for late July 

 are shown in figures 10 and 19. Sea surface 

 pressures are shown in figures 30 and 31. Sea ice 

 conditions for August are in figure 11; the retreat 

 continued as seen in figure 12. 



Iceberg reports continued to arrive through 

 August but no bergs were noted south of the 

 approaches to the Strait of Belle Isle. As is quite 

 common, icebergs remained in that area and Ice 

 Patrol forwarded all berg reports to Ice Central 

 Ottawa which broadcast the information to North 

 Atlantic mariners. 



