TABLE 28 

 Visibility 

 WMO Code 4300 for recording visibility at surface 



Code 



Less than 50 metres (less than 55 yards) 



(approx. 55-220 yards) 

 (approx. 220-550 yards) 

 (approx, 550 yards-5/8 n.m.) 

 (approx. 5/8-1 n.m.) 

 (approx. 1- 2 n.m.) 

 (approx. 2- 6 n.m.) 

 (approx. 6-12 n.m.) 

 (approx. 12-30 n.m.) 

 (30 n.m. or more) 



70 



