73«20'W 73*10' 



38*20'N 



73* 



72«50' 



38»I0' 



38* 



37»50'N 



OBSERVED DRIFT 

 CEOSTROPHIC DR 

 IINO CURREIT DRIFT 



PROGRESSIVE WIND VECTOR 



GMT TIME DATE 

 0000(10) 

 (9)ll00i^0$00 

 200 



0000(1!) 

 OSOO 



1200 



1800 

 '0000(12) 



(0600 

 '1200 



5 K) IS 



1 I I I 

 UTS 



SPEED SHOWN 

 BT LENGTH OF 

 ARROW 



72"40'W 



3 8*20' N 



38*10' 



37*50'N 



Figure 27.— Drogue movement 2310Z 11 Autrust to llOOZ 12 August, 1974 



87 



