1. Wind
Buys Ballot’s law

2. Buys Ballot’s Law
States that if an observer in the Northern Hemisphere faces the surface wind, the center of the low pressure is toward his right and somewhat behind him
And the center of High pressure is on his left and some what in front of him
In the Southern hemisphere its vice versa

3. Northern Hemisphere
Wind
30°
Starboard H L
30°
Port
Buys Ballot’s Law

4. Southern Hemisphere
Wind
30°
Port H L
30°
Starboard
Buys Ballot’s Law

5. N W E S

6. N W E S

7. N W E S

8. N W E S

9. N W E S

10. Northern Hemisphere
Wind
30°
Starboard H L
30°
Port
Buys Ballot’s Law

11. Southern Hemisphere
Wind
30°
Port H L
30°
Starboard
Buys Ballot’s Law