10% 10 % 
NW. NE NE 
1 Pron i Oe 
{| ly - 7. ” “ 
g ‘J / Lx ; rs Oy 
\ a ES eh LES 
KE oc, 03 ,§ 
= toy, SESS w Se Ie Sa 
100 S PERIOD (~, 
- aN SSS —— ae 
Z WSL SRE! 
s LW 
Lf aan 
ap VS / 
bs \\\ SSS, 
5% a 
vy 
SW: SE 
1Q%o 
s WIND SPEED 2 
(7) 0-10 kn 
1-21 kn 
Sone) 22-33 kn 
WSIGESET 34-47kn 
Figure 17. 
Wind rose for an average 12-month period (A) and for an 
average 9-month ice-free period (B) for southern Lake 
Michigan (data from SSMO observations, 1963-73). 
WAVE HEIGHT 
Co) < 0.25 meter 
GEE] 0.25 -1.25 
Figure 18. 
1.25-2.25 
GEEZER 2.25 < 
( <0.82 foot ) 
(082-410 " ) 
(410-738 " ) 
(7.38< mi) 
Wave rose for an average 12-month period (A) and for an 
assumed 9-month ice-free period (B) for southern Lake 
Michigan (data from SSMO observations, 1963-73). 
