STRATUS OR FRACTOSTRATUS -> 



Code 



L6: Stratus or Fractostratus, or both, but not 

 fractostratus of bad weather. 



These clouds are usually in a low single 

 layer and may be localized in extent. Clouds 

 properly coded 0, unlike those coded and 8, 

 are not very dark or menacing. 



The designation "fractostratus" is used 

 when a layer of stratus is broken up into 

 irregular shreds. 



FRACTOSTRATUS OR FRACTOCUMULUS 



Codes & 8 -» 



L7; Fractostratus and/or fractocumulus of bad 

 weather ("scud") usually under altostratus 

 and nimbostratus. (By "bad weather" is 

 meant the conditions usually prevailing im- 

 mediately before, during, or immediately 

 after precipitation.) 



Fractocumulus clouds of bad weather are 

 usually dark, receive little light; these clouds 

 generallj' become very numerous and may 

 merge into a sheet covering the entire sky. 



(See Ll for description of fractocumulus 

 of good weather.) 



CUMULUS & STRATOCUMULUS -> 

 Codes 6 & 8 



L8: Cumulus and stratocumulus other than 

 those formed by the spreading out of cumulus 

 with bases at different levels. The lower 

 cumulus clouds may or may not extend up 

 through the upper stratocumulus layer. 



H. O. 607 



185 



