44 MANUAL OF MARINE METEOROLOGICAL OBSERVATIONS 



Code Table 7 



SYMBOL W. --Past weather 



(During 3 or 6 hours preceding the ACTUAL time of observation) 



1 



When precipitation or thunderstorms have occurred and have not been 

 reported by ww, code figures 5 to 9 will be used as appropriate even 

 though they do not represent the generally prevailing weather. 



'When code figure 8 or 9 is reported and the showers or thunderstorms 

 were accompanied by hail add "past hail" to end of message. 



The term ice pellets means frozen raindrops or largely melted and re- 

 frozen snowflakes and is synonymous with the U. S. term sleet. 



