

TABLE 2. 



SEA 



STATE (WMO Ci 



Dde 3700) 









He 



ight* 





Code 

 



Feet 

 







Meters 

 



Description 

 Calm-glassy 



1 



- 



1/3 







- 0.1 



Calm- rippled 



2 



1/3 - 



1 2/3 





0.1 - 0.5 



Smooth-wave let 



3 



1 2/3 - 



4 







0.5 - 1.25 



Slight 



4 



4 - 



8 







1.25 - 2.5 



Moderate 



5 



8 - 



13 







2.5 - 4 



Rough 



6 



13 - 



20 







4-6 



Very rough 



7 



20 - 



30 







6-9 



High 



8 



30 - 



45 







9-14 



Very high 



9 



> 



45 







> 14 



Phenomenal 



"The average wave height as obtained from the larger 

 well-formed waves of the wave system being observed, 



TABLE 3. PRESENT WEATHER (WMO Code 4501) 



Clear (no cloud at any level) 



Partly cloudy (scattered or broken) 



Continuous layer(s) of cloud(s) 



Sandstorm, duststorm, or blowing snow 



Fog, thick dust or haze 



Drizzle 



Rain 



Snow, or rain and snow mixed 



Shower(s) 



Thunderstorm(s) 



TABLE 4. CLOUD TYPE (WMO Code 0500) 



Cirrus Ci 



Cirrocumulus Cc 



Cirrostratus ........ Cs 



Altocumulus ......... Ac 



Altos tratus As 



Nimbostratus Ns 



Stratocumulus. . . . . , . Sc 



Stratus St 



Cumulus Cu 



Cumulonimbus Cb 



Cloud not visible 



51 



