Ambient Weather Support

Definition: Compass Rose Vs. Degrees

principal winds. Listed clockwise, these are:

Compass point Abbr. Heading  
North N  
North-East NE    
East E 90° (45°×2)  
South-East SE 135° (45°×3)  
South S 180° (45°×4)  
South-West SW 225° (45°×5)  
West W 270° (45°×6)  
North-West NW 315° (45°×7)  

Weather Stations use a 16-point compass rose.

16-point compass roses are constructed by bisecting the angles of the principal winds to come up with intermediate compass points, known as half-winds, at angles of difference of 22​1⁄2°. The names of the half-winds are simply combinations of the principal winds to either side, principal then ordinal. E.g. North-northeast (NNE), East-northeast (ENE), etc.

 

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