Ill, Cloud Type 



Code 



Stratus or Fractostratus 



1 Cirrus 



2 Cirrostratus 



3 CirrooumvuLus 

 U Altocumvilua 



5 Altos tratus 



6 Stratus cumulus 



7 Nimbos tratus 



8 Cumulus or Fractociamilus 



9 Cumulormmbus 



IV. Cloud Amount 



C ode 



No clouds 



1 Less than l/lO or 1/10 



2 2/10 and 3/10 



3 U/10 

 U 5/10 



5 6/10 



6 7/10 and 8/lO 



7 9/10 and 9/10 plus 



8 10/10 



9 S'ky obscured 



V, Sea Amount 



Code 







1 

 2 

 3 

 U 



6 



7 

 8 

 9 



Approximate 

 Height (feet) 



Description 



Calm 



Smooth 



Slight 



Moderate 



Rough 

 Very rough 



High 

 Very high 

 Mountainous 

 Very rough 

 confused sea 



16 



