TABLE III. CLOUD TYPE 

 Code 



Stratus or Fractostratus 



1 Cirrus 



2 Cirrostratus 



3 Cirrocumulus 

 k Altocumulus 



5 Altostratus 



6 Stratos cumulus 



7 Nimbostratus 



8 Cumulus or Fractocumulus 



9 Cumulonimbus 



TABLE IV. CLOUD AMOUNT 



Code 



No clouds 



1 Less than l/lO or l/lO 



2 2/10 and 3/l0 



3 V10 



h 5/10 



5 6/10 



6 7/10 and 8/10 



7 9/10 and 9/10 plus 



8 10/10 



9 Sky obscured 



TABLE V. SEA AMOUNT 



Mean Max. Height 



of Sea Waves 



Code In feet (Approx. ) Description 



Calm (glassy) 



1 0-1/3 Calm (rippled) 



2 l/3-l 2/3 Smooth (vavelets) 



3 1 2/3 - k Slight 



^ 4-8 Moderate 



5 8-13 Rough 



6 13-20 Very rough 



7 20-30 High 



8 30-^5 Very high 



9 over ^5 Phenomenal* 



+ As might be expected in center of hurricane 

 63 



